Sedimentary rock layers are used by scientist help learn by the texture and shapes
William (Strata) Smith
index fossils are used to date the rock layers they are found incc
Generally, Yes, but not necessarily. Plateaus are generally created by an upwards thrust of the crust, pushing a flat rock bed further up than the surrounding area. The rock beds closest to the surface are usually either sedimentary rock layers (which are created by compacted sediment deposits) or sedimentary rock layers with intrusive igneous rocks. There are some plateaus that have metamorphic rock beds because the crust has been significantly eroded, warped, or overturned, but metamorphic rocks can be altered sedimentary or igneous rocks.
This is the problem,Thanks!
stratification
They date the igneous intrusions and extrusions near the sedimentary rock layers.
a tabular body of intrusive igneous rock, ordinarily between beds of sedimentary rocks or layers of volcanic ejecta.
Index fossils.
This is called an index fossil.
Sedimentary rock layers are used by scientist help learn by the texture and shapes
William (Strata) Smith
index fossils are used to date the rock layers they are found incc
This means a rock which is formed of many layers (or beds) of two or more different sedimentary rocks. For example, a rock which was formed in a river delta may contain sandstones and silt or claystones which are layed over each other in beds formed as the depositional environment changed on a cyclical basis - e.g. due to tides, seasons etc.
Generally, Yes, but not necessarily. Plateaus are generally created by an upwards thrust of the crust, pushing a flat rock bed further up than the surrounding area. The rock beds closest to the surface are usually either sedimentary rock layers (which are created by compacted sediment deposits) or sedimentary rock layers with intrusive igneous rocks. There are some plateaus that have metamorphic rock beds because the crust has been significantly eroded, warped, or overturned, but metamorphic rocks can be altered sedimentary or igneous rocks.
No single rock preserves fossils, but they're found mainly in sedimentary rock beds due to the amount of pressure exerted as it layers over millions of years.
1.Geologists use the geologic column to help them interperet rocks sequences. 2.they use to help them identify rock layers in complicated rock sequence.