How are rocks formed? Check out the following link and read about each of the 3 rock types. What is required in order for each different rock type to form? Give an example of each rock type and give me a bit of information about it.
How rocks are formed
153 comments:
Example of Sedimentary
Rock is Limestone. Limestone are rocks that are made from the mineral calcite which came from the beds of evaporated seas and lakes.
Example of Metamorphic Rock is Schist. Schict rocks can be formed from basalt, an igneous rock; shale, a sedimentary rock; or slate, a metamorphic rock.
Example of Igneouse Rock is Granite. Granite are igneous rocks which were formed by slowly cooling pockets of magma that were trapped beneath the earth's surface
For Sedimentary rock to form layer after layer of eroded earth has to be deposited on top of each. These layers are pressed down through time, until the bottom layers turns into rock. An example of sedimentary rock is limestone. Limestone is used in concrete.
For metamorphic rock to form the rocks are under tons of pressure, which causes heat build up, and this causes them to change. Metamorphic rocks are rocks that have morphed into another type of rock. Before the rocks morphed they were onece sedimentary or igneous. Schiast rock is a metamorphic rock and through heat and pressure, these rocks were formed into this new kind of rock.
Igneous rocks form as the lava cools above ground from an erupted volcano. When magma becomes trapped in small pockets the pockets of magma cool slowly underground,then the magma becomes igneous rocks. Granite is a type of igneous rock, Granite is used for monuments that will last for awhile and for decoration on buildings.
Sedimentary rock- forms from layers and klayers of eroded earth piling up over time. A type of this is limestone. Facts about this are it is made of calcite which came from evaporated seas, lakes, and sea animal shells. Good for building buildings.
igneous rock-formed above or underground. Underground magma gets trapped in small pockets and when it cools it becomes a rock. Above ground it is called magma and when it cools it becomes a rock. A rock of this type is scoria. Facts about it are it is made of lava and it actually a kind of glass.
metamorphic rock-formed by "morphing" from igneous rock or sedimentary rock. They change by undergoing heat and pressure. A type of this rock is gneiss. Facts about this are that it started as igneous and then changed when it experienced heat and pressure. You can see the patterns where it has changed and all the layers in which it was a sedimentary rock.
Sedimentary rocs are formed by wind, water, and ice eroding rocs away, and then carrying them to be deposited at a lake or a river delta. This process requires water and rocs. ex.-shale.
Metamorphic rocs are really just other rocs that undergo tons of heat and pressure and change into another roc. ex.-schist.
Igneous rocs are formed either from magma inside the earth or outside when tyhe magma coooool. it requires magma. ex.-pumice
@Anna
There are soo many rocks in the world, but I think it is most interesting how metamorphic rocks are formed because you can still see the patterns and properties of its first state!
Sedimentry rock is formed when layer after layer of eroded earth is deposited on top of on another. These layers are pressed down more and more through time, until the bottom layers slowly turn into rock. An example of this is shale. Shale is a type of sedimentary rock formed from clay that is compacted together by pressure.
Metamorfic rocks are created when sedimentary and igneous rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change. An example of this is gneiss. In the geiss rock you can see how the mineral grains in the rock were flattened through tremendous heat and pressure.
Underground, they are formed when the magma deep within the earth becomes trapped in small pockets. As these pockets cool slowly underground, the magma becomes igneous rocks. Igneous rocks are also formed when volcanoes erupt, causing the magma to rise above the earth's surface. Igneous rocks are formed as the lava cools above ground. An example of this is scoria. Scoria is actually a kind of glass and not a mixture of minerals.
Igneous rocks are formed when volcanoes erupt, causing the magma to rise above the earth's surface.Igneous rocks are formed as the lava cools above ground.
Granite is a type of a igneous rock.
Granite is used for long lasting monuments and for trim and decoration on buildings.
It takes thousands to millions of years to form sedimentary rocks. An example of this kind of rock is limestone. This rock is used in concrete and many buildings.
Metamorhpic rock needs a lot of pressure to morph into another rock.An example is schist, these rocks are made from basalt,an igneous rock; shale, a sedimentary rock; or slate, a metamorphic rock.
Igneous is made by melteds rock that cools. An example is granite, granite is used in monuments and makes a very pretty counter top! (:
Example of Sedimentary
Rock is Limestone Limestone are rocks that is made from the mineral calcite which came from the beds of evaporated seas and lakes
Example of Metamorphic Rock is Schist Schict rocks can be formed from basalt, an igneous rock shale a sedimentary rock or slate a metamorphic rock
Example of Igneouse Rock is Granite Granite are igneous rocks which were formed by slowly cooling pockets of magma that were trapped beneath the earth's surface
@ Jenn
I dunno, i personally like igneous bc its...um...it came from really hot magma and then cooled into smooth roooocs.
Sandstone is a sedimentary rocks and is formed with quartz and feldspar and used as building stones.
Gneiss rocks are metamorphic rocks that may have been granite but have changed under all the heat and pressure
@ally I picked the same example for Sedimentry like you did! Limestone!!! I think limedstone is cool but not my favorite thing in the world! agreee?
Limestone is an example of sedimentary rock.Limestone rocks are sedimentary rocks that are made from the mineral calcite.Calcite comes from beds of evaporated seas and lakes.
Schist is an example of a metamorphic rock.Schist can be formed from basalt,shale, or slate.
Granite is an example of an igneouse rock.Granite is formed when pockets of magma beneath the earth slowly cool.
Example of Sedimentary Rock is Sandstone. Sandstone rocks are sedimentary rocks made from small grains of the minerals quartz and feldspar.
Example of Metamorphic Rock is Schist. These rocks can be formed from basalt, an igneous rock; shale, a sedimentary rock; or slate, a metamorphic rock.
Example of Igneous is Scoria. Scoria rocks are igneous rocks which were formed when lava cooled quickly above ground.
Sedimentary- Little pieces of earth that had been eroded. Little pieces have been washed down into lakes,river, and oceans. There they settle at the bottom. Layers and layers are are depoisted on top of it. After awhile layers are pressed down and and become sedimentary rocks.
Limestone- Limestone rocks are sedimaentary rocks made from mineral calcite that came from the bottom of seas, lakes, and sea animal shells.
Metamorphic- These rocks form into new rocks. They were once igneous or sedimentary rocks. These rocks are formed under tons and tons of pressure, which heat builds up and this causes it to change.
Gneiss- These rocks may have been granite. Granite is an igneous rock but heat and presure change it.
Igneous- They are fromed underground by melted rocks called magma deep inside the earth. It becomes trapped. Igneous rocks are formed when volcanos erupt causing magma to rise up to the surface. When magma appears its called lava. The lava cools and and forms igneous rocks.
Granite- Granite rocks are formed slowly by the cooling of magma that was trapped beneath the earths surface.
@ luke
i find it cool that rocks can change just by win and ice.
Sedimentary: Little pieces of earth eroded, broken down and worn away from wind and water. The little bits of earth are washed downstream where they settle down to the bottom of rivers,oceans and lakes. Layer after layer of eroded earth is deposited on each one. The layers are pressed down more and more through time, until the bottom layers slowly turn to rocks.
Metamorphic: These rocks were once igneous or sedimentary rocks. The rocks under tons and tons of pressure, which fosters heat build up and this causes them to change.
Igneous: Formed either underground or above. Underground they are formed when the melted rock called magma, deep within the earth becomes trapped in small pockets of magma cool slowly underground, then becomes igneous. Also for,s when volcanoes erupt causing the magma to rise above earths surface. When magma appears above the earth, it is called lava. Igneous rocks form when the lava cools above the ground.
i completely agree with ally lyn lamping, but i had no idea about all the things you can do with granite.
@ Jennifer:
I agree, the metamorphic rocks are more interesting, but Sedimentary and Igneouse are interesting too.
@ Anna I totally agree with you about limestone but i do like granite better (: agree?!
@jenn Wow... i didnt know it was made of glass thats intesting
@ luke
You spelled rocks wrong.My favorite type of rock is metamorphic.I don't know why it's my favorite though.
@ally lamping
i agree with you!:)
@ Austin Bruce Gerdes (:
I know right?! isnt granite just the best haha! Agree?!
@ally Totally! I love the feeling of Granite! Wow we are talking about Granite!!!!!
@ Brandon (:
Yeah that is very amazing that wind and water can do so many things on earth!
Igneous rocks are called fire rocks. They are formed underground and above ground.
They are formed when volcanos erupt, causing magma to rise above the earth.
Examples of this type of rock are, Granite, scoria, pumice and obsidian.
Sedimintary rocks are formed when wind and water erode or worn away little pieces of our earth. an example of sedimentary rock is limestone, which comes from the mineral calcite, which comes from the beds of seas and lakes.
Metamorphic rocks are formed under heat and pressure. An example is gneiss, this rock was granite,that changed under heat and pressure.
Ingneous rocks are formed either above or below ground. An example is scoria rocks they are formed when lava cooled quickley above ground.
Sam and jill
@ brandon
i didnt know granite was igeous rocks
gratite is super duper funtastic!!!!
Sedimentary rocks for thousand ,even millon of years ,little pieces of our earth have been eroded,broken down by wind and water. and some are sandstone,limestone,shale conglomerate,and gypsum
Sarah Savard
@ Anna (:
Yes we are talking about granite lol! But its very cold smooth and cant forget the sparkles!!
@Ally Lamping.
I didn't know it took millions of years for it to form! Wow.
sedimentary example
limestone is made of a mineral called calcite witch came frome evaporated seas and lakes and sea animal shells.
metamorphic example
gneiss rocks may have been granite but heat and pressure change it.
igneous example
pumice rocks when lava is cooled quickly above ground. It is realy a kind of glass not made up of minerals.
Metamorphic rocks are morphed or changed. At one point they were sedimentary or igneous, but then were changed under heat or pressure. An example of metamorphic rock is gneiss, which may have been Granite, an igneous rock but was changed under heat and pressure. Sedimentary rocks are formed by rock fragments collect at the bottom of streams and the layers from together and become rock. Conglomerate rock is an example of metamorphic rock and is made up of small rocks and pebbles.Igneous rocks are formed when volcanoes erupt or in magma chambers deep inside the earth. lava and magma froms together and when it cools it forms igneous rocks. Obsidian rocks form when lava cools quickly above the earth's surface and it is actually glass, not minerals mixed together. It has sharp edges and is an example of igneous rocks.
@ally Who forgets sparkles!! Dumb people!!!! I love sparkles!!!! and Granite!!!! <3
@Jenn I agree metamorphic is the most interesting, although I think igneous rocks are pretty interesting too. I think metamorphic is cool because it can keep changing even though its a non living object.
@ ally
i didnt know limestone is used in concrete :)
@ anna (:
I know i love granite too!!!! Yeah i agree!
omg i love sparkly rocks it makes me alletamorphic inside
@ Drew (:
Yeah me either i didnt know till i read about it! haha
Exaples of sedimentray are gypsum conglomerate shale sediamentary is made from many small pieces of depree and is formed under presure
Metamorphic is from morphied from another rock examles are gneiss schist]\
Igneous are formed from the cool down of magma Examples are Granite, pumice obsidian scoria
one example of metamorphic rock is schist. its rocks can b e formed by basalt, or igneous. and thers shale, a sedimentary, or a metamorphic rock
an example of sedimentary rock is limestone. limstone is a type of rock that are made of a mineral calcite witch came from the beds of evaporated seas and lake things
an example of igneous rocks is granet! granet are rocks wich form by slowly cooling pockets of magma that were traped under the earths surface
Sedimentary rocks are formed by wind, water, and ice eroding rocs away,then taking them to a river
One sedimentary rock is Limestone to form sedimentary rocks you must have rocks, wind and/or ice or water.....
An example of sedimentary rock is limestone. Limestone are rocks that are made from a mineral called calcite which came from the beds of evaporated seas, rivers and lakes.
An example of Metamorphic rock is Schist. Schict rocks can be formed from basalt, a type of igneous rock, shale, a type of sedimentary rock, or slate, a type of metamorphic rock.
An example of Igneouse Rock is Granite. Granite are igneous rocks which are formed by the slowly cooling pockets of magma that were trapped beneath the earth's surface.
-Sydney Vest
sediment- broekn pieces tht have settled on the bottom of river streams or oceans is pressured by layers that cover each over time. the layers continue to bear this pressure until the bottom layers are compressed into rock.
metamorphic- tons and tons of pressure are applied to lets say an igneous rock, forcing heat to build up, which causes the igneas rock to change to metamorphic. the only types of rock that can change ar igneous, or sedimentary.
i agree with jennifer!! i thinbk it is really cool to be able to see and learn about that. !
-Sydney Vest
All that is needed to form a rock is pressure, heat and time. Sedimentary rock is pressure and time. Metamorphic rock is made by heat and igneous rock is made by heat and time.
Igneous - granite : this is made by heat under the surface of the earth and is used in long lasting features.
Metamorphic - gneiss : This was the granite igneous rock and with heat and pressure it changed.
Sedimentary - limestone : This is calcite made from evaporated floor beds from lake and sea.
Gneiss is a metamorphiic rock. They are formed by heat and pressure. THey might hsve been granite but the heat and pressure changed it.
Sandstone is a sedimentary rock. It is formed by layers of differnt materials such as quartz and they offten form layers.
Obsidian is an igneus rock that is formed when lavaa cools above ground. This is a glass formed by minerals.
Sedimentary rocks are rocks that get eroded by wind or water, eroded means to get broken down into little pieces.
Now about metamorphic rocks metamorphic rocks are rocks that become morphed, like if a igneous rock, or sedimentary rock are under ground for a long time, and they are under pressure, they will morph or turn into a different type of rock called metamorphic.
Now about igneous rock. gneous rocks are rocks that are formed by cooled magma that forms under ground. Also igneous rocks are rocks that form when a volcanoe erupts.!(:
~Alana Gulley~!!!!!(:
for each rock to form, i have found that heat and or pressure need to be applied.
examples:
sedimentary- shale
metamorphic- schist
igneous- scoria
schist- Schist rocks are metamorphic. These rocks can be formed from basalt, an igneous rock. shale, a sedimentary rock, or slate, a metamorphic rock. Through a lot of heat and pressure, these rocks were transformed into this rock.
ignous rock it formed when a valcano releases the gasses and magma inside, and igneous rock forms as the lava cools.
@ Mckenzie Young
Wow, I didnt know it took 1,000,000,000 years to form.! Thats a long time how would it take that long for just even a little pebble to form that.!(:
@KayleeSturwold
it is cool that sedimentary and igneous can change. They change and thats called metamorphic. They change by heat, pressure and time.
Rocks are formed when objects are broken down and carried down stream by wind/water. This adds layers to the rocks.an example of sedimentary rocks is limestone .limestone is made out of calcite this comes from evaported lakes.Metaphorphic is shicts,shicts are made from basalt.igenous rock is granite.lyndsey roberto
that is so cool anna i never new that calcite came from beds of evaporated seas and lakes
h
Sedimentary:
Example- Sandstone and Limestone
Sediments (dead plants) build up and the pressure froms the rocks.
Metamorphic:
Example- gniess and Schist
Metamorphic rocks are formed when sediments duild up and they aplly heat and pressure to other rocks and the other rocks form new rocks.
Igneous:
Example- Granite, obsidian, pumice
Ineous rocks are formed when lava cools outside of the volcanoe.
Sedimentary Rock are Formed by little pieces of the earth have been broken down by wind or water.
Metamorphic rocks are a kind of rock that have mix into a difrent kind of rock. These rocks were a igneous or a sedimentary rock be for they would mix. The rocks are under a lot of pressure and makes it really hot this makes them be diffrent.
Igneous rocks are called fire rocks and are formed from above and underground ground. Igneous rocks are formed as the lava gets cold.
A sedimentary rocks are formed by rocks being broken down by wind and water. The little peices rock are carried down stream and settle in rivers lakes and oceans. new layers cover the old and overtime they press down more and more turning into rock. An example on sedimentary rock is lime stone. Lime stone is used in concrete and is good in building stone for humid regions.
Metamorphic rocks are rocks that have been "morphed" into another kind of rock. These rocks were once sedimentary or ingneous rocks.The rocks are under tons of pressure and build up heat and this causes them to change. An example on a metamorphic rock is gneiss. Mineral grains in the rock were flattened do to extreme heat and pressure.
igneous rocks are formed either above or below the ground. UNderground they are formed by magma getting trapped in deep small pockets. Above ground they are formed when a volcano erupts. An Example of a Igneous rocks is pumice. Pumice is formed when lava cools quickly above ground. Pumice is so light it can float on water.
Courtney Smith
and
Sydney Polking :)
sedimentary examples shale rocks-formed from clay that is compacted together by pressure. They are used to make bricks and other material that is fired in a kiln.
metamorphic examples schist rocks-These rocks can be formed from basalt, an igneous rock,shale, a sedimentary rock or slate, a metamorphic rock.with tremendous heat and pressure, these rocks were transformed into this new kind of rock.
formed by slowly cooling pockets of magma that were trapped beneath the earth's surface. Granite is used for long lasting monuments and for trim and decoration on buildings.
igneous examples granite rocks-
sedimentary:
an example of sedimentary rock is limestone and sandstone.limestone is rocks that are made from mineral calcite which comes from lakes and seas.
Metamorphic:
this rock was once igneous or sedimentary.this rock is under a lot of pressure which makes heat build up.this causes the rock to change.an example of this is gneiss
Igneous:
an example of igneous rock is granite.these rocks are formed either above ground or under.they are formed when melted rock called magma gets trapped in small pockets.
Alec Uhlhorn
For Sedimentary rock to form layer after layer of eroded earth has to be deposited on top of each. These layers are pressed down through time, until the bottom layers turns into rock. An example of sedimentary rock is limestone. Limestone is used in concrete.
For metamorphic rock to form the rocks are under pressure, which causes heat build up, and this causes them to change. Metamorphic is a rock that have morphed into another type of rock. Before the rocks morphed they were once sedimentary or Igneous. Igneous rocks form as the lava cools above ground from an erupted volcano. When magma becomes trapped in small pockets the pockets of magma cool slowly underground, then the magma becomes igneous rocks.
sedimenrty rock is formed by layer after layer of eroded earth sediments deposited on top of each other and push down until rock forms. an example of sedimentry rock is gypsum it is formed from evaporating sea water its used for molds and casts
metamorphic rock is made by tons of pressure is exertaed onto an ignous or sedimentry rock. an example is schist it can made of basalt, shale or slate.
igneous is formed from lava cooling above ground a type of igneous rock is granite this is used for monuments that will a while
@ jennifer Peters
we didn't know that scoria was a type of glass. That is so amazing! :)
Courtney Smith
and
Sydney Polking :)
a example of sedimentary rocks are limestones. another exmple of metamorphic rocks are schist rocks. a example of igneous rocks are granite.
Igneos rocks are formed underground when the presser is great and it forms rocks like granite that is used to make tiles and table tops.
An example of sedimentary is sandstone.They are made from small grains of the minerals quartz and feldspar.
An example of Metamorphic is Gneiss. These rocks may have been granite, which is an igneous rock, but heat and pressure changed it. You can see how the mineral grains in the rock were flattened through tremendous heat and pressure and are arranged in alternating patterns.
An example of igeous is Granite. Granite rocks are igneous rocks which were formed by slowly cooling pockets of magma that were trapped beneath the earth's surface. Granite is used for long lasting monuments and for trim and decoration on buildings.
@Sanzere,Anna i didn't know limstone was a sedimentary rock did you?
for rocks to form they have to be put under high heat and/or pressure.
SEDIMENTARY
shale:
Shale rock is a type of sedimentary rock formed from clay that is compacted together by pressure. They are used to make bricks and other material that is fired in a kiln.
METOMORPHIC
gneiss:
Gneiss rocks are metamorphic. These rocks may have been granite, which is an igneous rock, but heat and pressure changed it. You can see how the mineral grains in the rock were flattened through tremendous heat and pressure and are arranged in alternating patterns.
IGNEOUS
obsidian:
Gneiss rocks are metamorphic. These rocks may have been granite, which is an igneous rock, but heat and pressure changed it. You can see how the mineral grains in the rock were flattened through tremendous heat and pressure and are arranged in alternating patterns.
igneous rocks are formed when rocks are crushed under extreme pressure to from rocks like granite.
Sedimentry rock is formed when layer after layer of eroded earth is deposited on top of one another.
Metamorphic rocks are rocks that have morphed into another kind of rock. These rocks were once igneous or sedimentary rocks.
Igneous rocks are called fire rocks and are formed either underground or above ground. Igneous rocks are also formed when volcanoes erupt, causing the magma to rise above the earth's surface.
sedimentry rock: diffrent types of rocks are eroded and settle on the the bottom of a lake river ocean and after along time of them being pressed together they begin to turn into rocks examples shale limstone sandstone gypsum
metamorphic rocks: are changed igneus or sedimenttary rocks this change is caused by heat and pressure examples gneiss
igneus rocks: are formed from the lava or magma cooling inside or out side the earth examples granite pumice obcidian.
It takes thousands to millions of years to form sedimentary rocks. An example of this kind of rock is limestone. This rock is used in concrete and many buildings.
Metamorhpic: rock needs a lot of pressure to morph into another rock.An example is schist, these rocks are made from basalt,an igneous rock; shale, a sedimentary rock; or slate, a metamorphic rock.
Igneous: is made by melteds rock that cools. An example is granite, granite is used in monuments and makes a very pretty counter top.
Sedimentary- Pressure is required for it to be formed. An example of this rock is sandstone. Sandstone is made from small grains of the minerals quartz and feldspar.
Metamorphic- Heat is required for it to be formed. An example of this rock is schist. This rock can can be formed from basalt, an igneous rock; shale, a sedimentary rock; or slate, a metamorphic rock.
Igneous- Magma is required for it to be formed. An example of this rock is granite. This rock was formed by slowly cooling pockets of magma that were trapped beneath the earth's surface.
How are rocks formed? Igneous:These rocks are formed by cooled magma above or below ground.
Metamorphic:These rocks are formed by the severe pressure and heat on Igneous and Sedimentary rocks.
Sedimentary:Broken down rocks and minerals wash downstream or around the ocean and eventually build up enough to become rocks.
Check out the following link and read about each of the 3 rock types. What is required in order for each different rock type to form? READ THE ABOVE MATERIAL
Give an example of each rock type and give me a bit of information about it.
Igneous/Pumice:These rocks are igneous rocks which were formed when lava cooled quickly above ground. You can see where little pockets of air had been. This rock is so light, that many pumice rocks will actually float in water. Pumice is actually a kind of glass and not a mixture of minerals. Because this rock is so light, it is used quite often as a decorative landscape stone. Ground to a powder, it is used as an abrasive in polish compounds and in Lava© soap.
Metamorphic/Schist:These rocks are metamorphic. These rocks can be formed from basalt, an igneous rock; shale, a sedimentary rock; or slate, a metamorphic rock. Through tremendous heat and pressure, these rocks were transformed into this new kind of rock.
Sedimentary/Sandstone:These are sedimentary rocks made from small grains of the minerals quartz and feldspar. They often form in layers.
@ Bonnie
I agree, it is cool. It's almost like it is living but it's not. What I mean is like it's almost like a chameleon how it transforms from one thing to another.
Obsidian is a ingneos rock and is formed when magma cools very quickly. It is black and has sharp edges.
Gnieses is a metomorphic rock. It may have been granite an ingneos rock but intense heat and pressure changed it to Gnieses.
Shale is a Sedimentary rock that is formed when clay is compacted together.
rocks are formed by weathering or volcane lava.
the sedimentary rock is formed by by weathering. it cam be found in ocean and rivers its cared by rivers.
METAMORPHIC rock is formed by sedimetary rock and IGNEOUS rock. you can noticed metamorphic rock how flat it is.
IGNEOUS ROCKS are formed either under ground or above ground and formed by melted rock.the igneous is also for while a volcanoe explosed.
andrew reis
@ ALLY
i agree with you because we say that sedimentary and igneous.They change by heat, pressure and time to.
@Natalie
I find it cool that many everyday materials are formed in the weirdest way.
monni szary
one type of sedimentary rock is limestone.
the other type of minerals is metamorphic rock and is is like slate.
The last type of rock is igneous rock that is like granite.
most rocks are created by either eroion or volcanoes. the causes of eroion is wind and (rain) water. the ways volcanoes help make rocks is the magma.
Austin Deller
monni szary
one type of sedimentary rock is limestone.
the other type of minerals is metamorphic rock and is is like slate.
The last type of rock is igneous rock that is like granite.
sedimentary example
limestone is made of a mineral called calcite witch came frome evaporated seas and lakes and sea animal shells.
metamophic rock example
metamophic rock is a rock that has morphed into a different rock. they were once sedimentary and once igneous.
igneous example
pumice rocks when lava is cooled quickly above ground. It is realy a kind of glass not made up of minerals.
@ Andrew Ehrman
I love obsidian! It looks really cool with the black edges. Did you know that obsidian is used as surgical scalpel blades?
Sedimentary rocks-
EX. limestone
Sedimentary rocks are formed by pieces of earth eroding. The little pieces of earth are carried down streams where they settle at the bottoms of rivers, lakes, ocean etc. As layers of earth continue to be deposited ontop of one an other, the bottom layers slowly harden into rock. This cycle continues.
Metamorphic rock-
EX. schist
Metamorphic rocks are formed by rocks that were once sedimentary or igneous rocks are put under alot of pressure. This pressure causes heat and causes the rocks to change (morph)
Igneous rock-
EX. granite
Igneous rock is formed underground and above ground.
UNDERGROUND- when magma that is deep in the earth becomes trapped in small pockets, the magma cools. This causes igneous rocks.
ABOVE GROUND- when volcanoes erupt, magma comes out of the earth. This is called lava. The lava cools above ground and this causes igneous rocks.
sedimentary rock is formed by layers of eroded earth rock, and by wind and water and ice erodes rock away. a type of this rock is limestone is a type of rock made from mineral calcite from beds of evaperating seas,shells from animals, and lake
metamorphic rock is formed by morphing which are frome sedimentary or igneous rocks. undergoing heat and pressure mad this rock change. a type of this rock is schist which are formed by basalt and igneous rock, shale and sedimentary rock and slate. transformed by heat.
igneous rocks are formed by heat and pressure and when lava cools above ground. a type of rock that is igneous is granite, formed by slowly cooling pockets of megma, trapped beneath earths surface, used for long lasting monuments and for decorations for buildings.
Allison Johnson
@peters jennifer that is cool how scoria is a type of glass. i never knew that.
-to form a Sedimentary rock
you need a igneous rock, a sedimentary rock, shale, metemorphic rock, or slate need to be pressent.
-an example of sedimentary is shale
-some information about sedimentary is that to create the layers little bits of our earth are pressed down more and more through time
-to form Metamorphic Rock you need a igneous rock, shale, a sedimentary rock, a metamorphic rock, or basalt.
-an example of metamorphic is gneiss
-some information about metamorhpic is that Metamorphic rocks are rocks that have morphed into another kind of rock
-to form Igneous rock you need magma, hot or cold, it forms when magma cools or heats up slowly underground or aboveground,
-an example of Igneous is pumice
-some information about Igneous they are known as fire rocks, and can form above or below the earths surface.
@monnie
what did you find on the other rocks. you only talked a little bit about each rock all you wrote about is that igneous rock is like granite, whitch does not make any sense! PLEASE EXPLAINE for igneous i had
-to form Igneous rock you need magma, hot or cold, it forms when magma cools or heats up slowly underground or aboveground,
-an example of Igneous is pumice
-some information about Igneous they are known as fire rocks, and can form above or below the earths surface.
Little pieces of the earth are eroded over and over again and then eventually the bottom layer will turn in to a rock. Sedimentary rocks are formed by minerals, sofels, sand, pebles.Metamorphic rocks are made from granite and pumice. Igneous rocks are fire rocks.
@anotoumus who posted at 7:22 am
Where are your ex. mine were shale pumice and gneiss
Sedimentary -
Layer of layers of pieces of the earth are on top of each other and are pressed down enough they turn into rock. Ex:Gypsum- made up of sulfate mineral and fromed by evopaporating sea water in masive prehistoric basins.
Metamorphic-
Were once sedimentary and igneous rock. The rocks are under tons and tons of pressure and this causes them to change. Ex: Schist- can be formed from basalt, shale or slate. Heat and pressure frmo this rock
Igneous rock- Underground- melted rock is trapped in small pockets. AS they cool underground they become igneous rock. Aboveground- When a volcanoe erupts lava appers. Igneous rocks can be fromed when lava cools above ground
Ex: granite- formed by slowly cooling pockets of magma trapped beneath the earth.
@Luke
What's some information about shale?
An example of Sedimentary is Limestone. Limestones ar made out of a mineral called calcite. Calcite comes from evaporated sea and lakes. It also comes from sea animals shells. Lime stone can be used for concrete to build buildings and other things.
An example of Metamorphic rock is Gneiss. Gneiss used to be granite, which is an igenous rock but heat and pressure changed it.
An example of Igenous is Scoria. Scoria is made when lava cools quickly above ground.
@ courtney smith
I also didnt know that scoria was a type of glass!
Sedimintary rocks are formed when wind and water erode or worn away little pieces of our earth. an example of sedimentary rock is limestone, which comes from the mineral calcite, which comes from the beds of seas and lakes.
Metamorphic rocks are formed under heat and pressure. An example is gneiss, this rock was granite,that changed under heat and pressure.
Ingneous rocks are formed either above or below ground. An example is scoria rocks they are formed when lava cooled quickley above ground.
Anthony, Erb
For these rocks to be formed...
Sedimentary-Eroded bits of other rocks have to fall on top of eachother in layers, get enough pressure.
Igneous-When magma cools the cooled magma becomes igneous rock.
Metamorphic-A igneous or sedimentary rock that changed under TONS of heat and pressure.
Examples:
Igneous-Happens to be my favorite rock, obsidian! It is sharp along the edges and really is dark glass and not a mixture of minerals. It is formed when magma cools fast.
Sedimentary-Limestone, it is made from the mineral calcite. It is excellent for building in humid regions.
Metamorphic-Gneiss, these rocks were most likely granite, which is an igneous rock, before they were changed by heat and pressure.
sedimentary rock is limestone.limestone are rocks that are made from mineral
metamorphic rock is schist.schist rocks can be formed from basalt an igneous rock
igneouse rock is granite granite is igneous rocks wich were cooling pockets of magma.
A Sedimentary rock could be a sandstone rock. They are made from small grains of minerals quartz feldspar.
A Metamorphic rock could be a Gneiss rock. In which these could have been granite and heat and pressure could change it.
A Igneous rock could be formed under ground or above ground. This rock could also be a pumice rock. These pumice rocks are formed when lava cooled quickly above ground, they could actually even float on water.
Sedimentary Rock-Peices of the earth have to break down and wash away to the top of older rock layers and then become and older rock layer which makes it sedimentary.One example is Limestone.Limestone is a sedimentary rock that is made from a mineral Calcite.
Metomorphic-In order for a rock to become metomorphic it once had to be a sedimentary or igneous rock that was one under pressure and eventually changed in metomorpic rock. One example is Gneiss. Gneiss used to be igneous but was under so much heated pressure it formed into metomorphic.
Igneous-Igneous rocks can be formed either above or below earths surface. If they were made below the surface then they were formed by melted rock. If they were formed above ground that means magma erupted from a volcanoe and if formed and above ground igneous rock. One example is Pumice. Pumice Rocks are formed when hot lave cools quikly above the earths surface.
1.rocks are formed by dust and hardness.
2.hardness
3.
@ ally
i didnt know limestone is used in concrete..
sedimentry rock:
Forms by Layer after layer of eroded earth is deposited on top of each.An example of sedimentry rock is limestone.Limestone is made from Limestone rocks are sedimentary .rocks that are made from the mineral calcite which came from the beds of evaporated seas.
Meatamorphic rock:
Forms by The rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change.An example of metamorphic rock is schist.Schist is formed by These rocks can be formed from basalt, an igneous rock; shale, a sedimentary rock; or slate, a metamorphic rock.
Igneous rock;
Formed by Igneous rocks are also formed when volcanoes erupt, causing the magma to rise above the earth's surface. An example of igneous rock. Granite rocks are igneous rocks which were formed by slowly cooling pockets of magma that were trapped beneath the earth's surface.
For sedimentary rock to form, eroded pieces of earth are washed downstream. They layer on top of each other and press down. Eventually the bottom layers turn into rock.
For metamorphic rock to form, igneous or sedimentary rocks go under tons of pressure which builds up heat and 'morphs' them into metamorphic rocks.
Igneous rocks form above ground and underground. For above ground, when volanoes erupt, magma goes above the earth and then cools.
For underground, magma gets trapped in small pockets and then cools.
An example of a sedimentary rock is conglomerate rocks. They are made up of things like pebbles and sand. Pressure cannot hold the rock together by itself, because the rock is so large.
An example of a metamorphic rock is gneiss. Gneiss may have been granite at one point. Mineral grains in the rock are in alternating patterns.
An example of igneous rock is scoria rocks. They are formed when lava cooled quickly above ground and they are actually a kind of glass.
metamorphic rocks are rocks that have been morphed they used to be igeneouse rocks but they were put under tons of pressure till they combined to make a metamorpic rock so if you look really closely you will see that there is flattened pieces of the igneous rock on the metamorphic.
sedimentary- examples of sedimentary rock are limestone, sandstone,shale, conglomerate, and gypsum.Layer after layer of eroded earth is deposited on.These layers are pressed down more and more throughout time, until the bottom layers slowly turn into rock.
metamorphic-examples of metamorphic are schist and gneiss
The rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change.
igneous-examples of igneous are granite, scoria, pumice, and obsidian.Igneous rocks are called fire rocks and are formed either underground or above ground. when they are formed Underground, they are formed when the magma deep within the earth becomes trapped in small pockets. As these pockets of magma cool slowly underground, the magma becomes igneous rocks.
Igneous rocks are also formed when volcanoes erupt, causing the magma to rise above the earth's surface. Igneous rocks are formed as the lava cools above ground.
@Sanzere, Anna
I don't get why all of you like Granite so much, I find it to be boring, I like obsidian much better. So much more smooth and shinyish. Thats just me, though.
@ anna
I think that metamorphic rock is the most intrasting because it forms in a different and has only a few minerals made from it.
@sanzere
limestone deffinetely isnt my most fav. thin in the world but it is heldful.
Sedimentary Rock: What is required for these rocks to form is different layers of rocks are piled on top of each other over the years. Thats how sedimentary rocks have different layers. An example of a sedimentary rock is limestone. Limestone is made from the minearl calcite which came from seas. Its a exccellent building material for humid regions.
Metamorphic: rocks that have "morphed" into a different rock. They used to be igneous or sedimentary rocks. They change because they are under a large amount of pressure. An example is
gniess. Gniess used to be granite which is igneous, but heaqt and pressure made it metamorphic.
Igneous: They can be formed above and below ground.They are formed when magma gets captured into small pockets and it eventually cools into hard solid rock. An example is Obsidian. They are fromed when lava cools quickly above ground. Obsidian is glass.
@dupont
i love granite! i have granite counters in my kitchen and they are pretty spiffy :)
Sedimentary- Formed by pieces of the earth breaking down. Little bits of the earth are washed downstream. Limestone- made from the mineral calcite which came from the beds of evaporated seas and lakes.
Metamorphic- rocks that were once igneous or sedimentary that are under tons of pressure which heats them up and changes them. Example- Schist- Rocks that can be formed from basalt, shale or slate.
Igneous- Can be formed under or above ground. When underground, it forms when magma deep down low gets trapped in small pockets. Above gorund, the magma that pours out of a volcano (lava) cools and makes an igneous rock. Example Pumice- Formed by lava cooling quickly above the earths surface. The rock is so light, many pumice rocks float in water!
@Jenn
Yeah I did hear that limestone is good for buildings. I think the Purple People Bridge is part limestone. I think it's cool that it comes from evaporated seas, lakes, and sea animal shells.
sedimentry rocks are made of worn down rocks with gatar. the preser of things such as water ond groping of the miterals at a spicific spot transforms them into lyard rocks called sedimentry rocks.shale is an example. it is used for brik.
ignus rocks begin as a moltan sudstace konoe as magma.once they cool they are rocks. it can also happen when magma erpts and colls.an example is granite,wich is used for decore and long lasting buidings.
and finily there is metomorthic rocks. there are formed form sedimentry and ignius under presher. they melt as they do this , forming metomortic rocks.an example, gniss rocks were prodly orignly granite, but it changeg.
i choose sedimrntary rocks :) : they ar formed by millions of yeats of little pieces of earth that have eroded--broken down and even worn way by the lovly wind and water and everything adds up tp make the rock layerd
and example it a shale rock becasue its lyaerd and is formed by wind and water
@Peters, Jennifer
My favorite type of rock is metamorphic because like you said you can see patterns on it. I think those patterns were made my inprints of rocks that changed to rock into metamorphic.
@Anna Sanzere
Isn't all metamorphic rocks made from the magma underground or lava above ground, not just granite?
re: makinsy young
you are sposted to do all 3 in 1 post, no offence.
Sedementary
Layer after layer of eroded earth is deposited on top of eachother. These layers get pressed together more and more through time, until the bottom layers slowly turn into rock. An example of this rock is limestone. Limestone is used in concrete because it is great in humid conditions.
Metomorphic-
rocks that have changed into another kind of rock. These rocks were igneous or sedimentary rocks before they became metomorphic rocks. The rocks change becaus ethey undergo tons and tons of pressure, and very hot tempetures this causes them to change. An example of this kind of rock is the gneiss rock. the gneiss rock once might have been granite. Granite is an igneous rock, but the granite went through tons of pressure and high temps and became a gneiss rock.
Igneous-
These rocks can be formed either above ground or underground. It is formed underground when melted rock called magma is trapped insite a pocket called a magma pool. They are formed above ground when a volcano erupts and the magma cools above ground magma is now called lava. an example of an igneous rock is granite. granite is formed when small packets of underground magma that slowly cool. Granite is used for long lasting monuments, and decoration on/in buildings.
limestone is a sedimentary rock made from mineral calicite. Calicite comes from beds of evaporated seas and lakes.schist rocks are metamorphic. they can be formed by basalt,an ingeous rock. sedimentary rock and metamorphic rock go through tremendous heat and pressure that makes a new kind of rock.Granite rocks are igneous rocks formed by slow cooling pockets of magma that are trapped beneath the earth.granite is used for long lasting monuments and for trim, decoration on buildings.
@Breanna Gaddis.
I have granite counters to! I think if you look closly you can see that it kinda has a sparkle.
@ ally
there are some meny rocks in the world but i think metamorphic rock is the most interesting
Rocks are formed in Igneous, metamorphic, and sedementary rocks.
joshua parsons-sedimentary rocks are formed by rocks and land being eroded by wind and water. Metamorphic rocks are igneous and sedimentary rocks that formed under pressure into a different rock.igneous are fire rocks that form underground as magma and cool and harden.sedimentary rocks need wind and water erosion to form. metamorphic need pressure of sedimentary and igneous. and igneous need to form undergrounf from magma under pressure.
@Alyssa
there is know one who posted at 7:22. There is an anonymous that posted at 7:25 and 7:32 though.
Limestone is a a type of rock that is made from the mineral calcite which came from the beds of evaporated seas and lakes.
metamorphic rock-formed by "morphing" from igneous rock or sedimentary rock. A type of this rock is gneiss.
Example of Igneouse Rock is Granite, Granite are igneous rocks which were formed by slowly cooling magma that were trapped beneath the earth's surface
@ courtney smith
I didnt know that scoria was a type of glass.
Sedimentry rocks are formed by eroded/broken down rocks and worn away by wind and water. These little bits of our earth are washed downstream where they settle to the bottom of the rivers, lakes, and oceans.
Metamorphic rocks are under tons and tons of pressure, which fosters heat build up, and this causes them to change.
Underground, they are formed when the melted rock, called magma, deep within the earth becomes trapped in small pockets. As these pockets of magma cool slowly underground, the magma becomes igneous rocks. Igneous rocks are also formed when volcanoes erupt, causing the magma to rise above the earth's surface. When magma appears above the earth, it is called lava. Igneous rocks are formed as the lava cools above ground.
An example of a Sedimentry rock is Shale. Shale rock is a type of sedimentary rock formed from clay that is compacted together by pressure. They are used to make bricks and other material that is fired in a kiln.
An example of a Metamorphic rock is Schist. Schist rocks are metamorphic. These rocks can be formed from basalt, an igneous rock; shale, a sedimentary rock; or slate, a metamorphic rock. Through tremendous heat and pressure, these rocks were transformed into this new kind of rock.
An example of a Igneous rock is Pumice. Pumice rocks are igneous rocks which were formed when lava cooled quickly above ground. You can see where little pockets of air had been. This rock is so light, that many pumice rocks will actually float in water. Pumice is actually a kind of glass and not a mixture of minerals. Because this rock is so light, it is used quite often as a decorative landscape stone. Ground to a powder, it is used as an abrasive in polish compounds and in Lava© soap.
-Brianna Gall
Sedimentary Rock are Formed by little pieces of the earth have been broken down by wind or water.
Metamorphic rocks are a kind of rock that have mix into a difrent kind of rock. These rocks were a igneous or a sedimentary rock be for they would mix. The rocks are under a lot of pressure and makes it really hot this makes them be diffrent.
Igneous rocks are called fire rocks and are formed from above and underground ground. Igneous rocks are formed as the lava gets cold
ther is sedimentary. layer upon layer of sediment is deposited and pressed down on each other over time.example is limestone, which is made of calcite.
metamorpic is another type of rock that changes after it is exposed to extreme heat and pressure. schist is an example of a metamorphic rock
igneous rocks occur from cooled magma. an example is granite. it lasts a long time and is used for monuments.
@ jennifer peters
i agree. i think metamorphic are the coolest. how do they get re exposed to the intense heat and pressure though?
ON the Sedimentary rocks it is neat to think how the wind an water can form rocks. Like Limestone some ofthese are formed at the bottom of oceans from sea animals shells. These rocks are used for buildings.
Metaphoric rocks change from the heat. The rocks are stacked on each other with alot of pressure and heat this changes the formation.
Igneous rocks are also fire rocks. The form underground, melted rocks or they can form above ground called manma rocks or lava from the cooling after a volcano.
-sedimentary, put togeather from old rock segments, forming in layers. example-limestone
-igneous, formed by cooled magma and/or lava, can happen above or under ground
-metamorphic, sedimentary and metamorphic under go mass heat and pressure and morph into a metamorphic rock
@jen
there are a lot of different types of rocks in the world isnt there? my favorite is sedimetary because you can see its stages by its layers
Example of Sedimentary
Rock is Limestone. Limestone is rocks that are made from the mineral calcite which came from the beds of evaporated seas and lakes.
an Example of Metamorphic Rock is Schist. Schict rocks can be formed from basalt, an igneous rock also shale, a sedimentary rock; or slate, a metamorphic rock.
Example of Igneouse Rock is Granite. Granite are igneous rocks which were formed by slowly cooling pockets of magma that were trapped beneath the earth's surface making igneouse rocks
Example of Sedimentary
Rock is Limestone. Limestone are rocks that are made from the mineral calcite which came from the beds of evaporated seas and lakes.
For Sedimentary rock to form layer after layer of eroded earth has to be deposited on top of each.
Example of Sedimentary
Rock is Limestone. Limestone are rocks that are made from the mineral calcite which came from the beds of evaporated seas and lakes.
For Sedimentary rock to form layer after layer of eroded earth has to be deposited on top of each.
anna sanzere-ya i thought the limstone are rocks that are made from the minaral calcite.
An example of sedimentary rocks is shale. Shale rock is a type of sedimentary rock formed from clay that is compacted together by pressure.
An example of igneous rocks is granite is an igneous rocks which were formed by slowly cooling pockets of magma that were trapped beneath the earth's surface.
An example of a metamorphic rock is schist.These rocks can be formed from basalt, an igneous rock; shale, a sedimentary rock; or slate, a metamorphic rock
@ anna sanzere i didnt know limestone could come from calcite
rock are formed by a volcaneo,layers,weather.
Anna
nice comment.
Rocks are formed by cooling pockets of magma.Each different types of rocks formed are sedimentary, igneous, and metamorphic rocks.Examples of rocks are limestone, shale, gypsum, and sandstone.
Igneous rocks are formed when the melted rock, called magma, deep within the earth becomes trapped in small pockets.Metamorphic rocks are rocks that have morphed into another kind of rock. Sedimentary rock are rock that have bean worn away by wind and water and more and have bean pressed into the ground.
-Kirk Fredrick.
Michael Twilling
Sedimentary rocks are formed when layers of eroded rock pile on each other.
metamorphic rocks are formed when heat and pressure are applied to a rock.
igneus rocks are formed when magma or lava cools.
Michael Twilling
@Brandon Schirmer I didn't know granite was used on monuments
@me, lol
when i was little i didnt know that glass was made from minerals, lol. buuutttt nown i do cuz im a big girl
The metamorphic rocks are washed downstream where they settle to the bottom of the rivers and oceans.
Sedimentry rock is formed when layer after layer of eroded earth is deposited on top of on another.
Igneous rocks are formed when volcanoes erupt.Igneous rocks are formed as the lava cools above ground.
By: austin breiner
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