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Rock layers are formed by sedimentation. Existing rocks weather and erode, are deposited, covered with additional sediments, compacted and cemented together by the precipitation of minerals from the fluids between the particles. There are other instances where layers can be created, such as repeated volcanic eruptions, but the bulk of rock layers are sedimentary in origin.
Elza Olson
Wiki User
∙ 14y agoRock layers are formed by sedimentation. Existing rocks weather and erode, are deposited, covered with additional sediments, compacted and cemented together by the precipitation of minerals from the fluids between the particles. There are other instances where layers can be created, such as repeated volcanic eruptions, but the bulk of rock layers are sedimentary in origin.
Wiki User
∙ 12y agoThey r formed underneath the water when layers of sediment build up
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Is sedimentary rock the only type of layered rock?
No. Extrusive igneous rocks are usually layered. Some metamorphic rocks have foliation, which resembles layering, but it is not the same thing.
Sedimentary rocks are useful as records of past time because of .?
Their layered structure :)
What features tell you how a sedimentary rocked is layered?
Sedimentary rocks are often deposited in layers as strata. The feature that tells how a sedimentary rock is layered is called the bedding.
What is referred as bush-veld igneous layered complex?
Any body of igneous rocks that are... -layered and -composed of much ultramaphites and few maphites and -rich in Chrome
What kinds of rocks formed when mt Vesuvius erupted?
it formed igneous rocks
Is rock with visible layers and no visible mineral crystals likely to be formed from lava hardening on Earth's surface?
Probably not. While layered lava flows are not uncommon, most layered rocks formed from the accumulation and lithification of sediment.
How does mesa form?
Mesas are formed by weathering and erosion of horizontally layered rocks that have been uplifted by tectonic activity.
What is the definition of foliated rocks?
rocks that do not have a layered structure.
How you can tell an igneous rock from a sedimentary rock from a metamorphic rock?
Igneous Rocks are usually black and smooth because they ate formed by heat, sedimentary rocks are usually layered in color.
What is it called when younger rocks are layered on top of older rocks?
superposition
Are sedimentary rocks usually layered?
Yes
What types of landforms do you think would have layers?
Those made out of layered sedimentary rocks Those made out of layered igneous rocks Those made out of metamorphic rocks with pronounced planar fabric.
Why are rocks layered?
because god made it so
What kinds of rocks are layered?
At some level, almost all rock is layered. From the first cataclysmic events through periods of glaciation and warm inland seas, layer after layer of rocks have been laid down--one on top of the other. Stratigraphy, the study of layers, is one of basic ways that geologists answer the question "what happened?". There are three kinds of rock: igneous; sedimentary and metamorphic. Of the three, sedimentary rocks are the most obviously layered because they are formed by layers of mud and/or sand.
Is sedimentary rock the only type of layered rock?
No. Extrusive igneous rocks are usually layered. Some metamorphic rocks have foliation, which resembles layering, but it is not the same thing.
What is the main thing rocks are identified by?
Rocks and Minerals can be identified and distinguished by their distinctive texture, structure, and chemistry.
When are layered clouds formed when air moves?
up?
