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Why do the lower levels of sedimentary rock on Earth show fossils of the simplest life forms?
Wiki User
∙ 8y ago
The lower the level of a rock stratum, the older it is. Evolution is recorded in the sedimentary rock record, therefore, the simpler forms would show up in the oldest layers. The old life forms were usually very simple so the deeper down the sedimentary levels are, the older the fossils are their.
Wiki User
∙ 8y ago
Wiki User
∙ 13y agosedimentary rocks are caused by compaction of sand and debris.
remains of dead animals sometimes mix up with the sand and eventually get trapped inside creating fossils.
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What is the maximum depth at which fossils are found in the earth's crust?
They are mostly found on, or very near, the surface. They have probably been quite deeply buried at some point ( a lot can happen in, say, 70 million years) but due to tectonic movements and erosion, they finish up where we can find them. If all the Jurassic rocks were buried at about 300m, then our knowledge of dinosaurs would be impressively small.
Can scoria hold fossils?
Schists are formed when a sedimentary rock is deformed by great heat and pressure, deep within the Earth's crust. This deformation means that fossils do not survive in schists. Only less deformed rocks, such as slate and shale, can hold fossils.
Scientists who study ancient life on earth and fossils?
the study of the past life me is the key to the futrue
What information lead scientists that shallow seas covered much of the earth during the paleozoic era?
finding inland fossils of sea creatures in sedimentary rock. very far inland like idaho
What are some of the things about the past which you can learn from studying sedimentary rocks?
Sedimentary rocks are deposited in layers as strata, forming a structure called bedding. The study of sedimentary rocks and rock strata provides information about the subsurface that is useful to scientists to learn about ancient environment of area.
How can sedimentary rocks show earth history?
they have fossils and pieces of the environment from the past inside of them
Facts about sedimentary rocks?
95or all fossils found. Sedimentary rock makes up ¾ of the earth's surface.
Why do scientists look to sedimentary rocks when studying the history of the Earth?
The vast majority of fossils are found in sedimentary rock.
How can sedimentary rock earth history?
they have fossils and pieces of the environment from the past inside of them
What mineral can fossils be found in?
It depends what fossil you're talking about but normally fossils are found in sedimentary rocks. But diatomaceous earth, and limestones contain fossils, or are made of fossils.
Where are fossils mostly preserved?
Most fossils are found in sedimentary rock, which is the most common type of rock on Earth. Sedimentary rocks form when particles of sediment are deposited by water or wind, and then hardened over time.
Fossils can only form when?
Fossils can only form when the conditions are right. These conditions are in a sedimentary layer of the earth which are able to preserve soft and hard parts of the item.
How are sedimentary rock used by scientists to learn about the past?
Sedimentary rock layers are used by scientist help learn by the texture and shapes
What are the 2 characteristics of sedimentary rocks that reveal the past history of the earth?
Presence of fossils and stratification of the rocks structure into different layers.
What does the discovery of fish fossils in sedimentary rock indicate?
This indicates that the layers of sedimentary rock that constain fish fossils (or any other marine fossil for that matter) indicate there once was a body of water lying over that are of the earth whether it being an ocean or just simply a lake.
Where are sedimentary rocks located?
sedimentary rocks can be locatedsome where in the earth..... LOLI'm sorry to say this, but the above answer is very unhelpful.Sedimentary rocks are located in alot of places, an example is:* Southwestern UtahAlso, Fossils are found inside sedimentary rocks.Hope I Helped!AliceAnswers
Do the oldest rocks on earth contain fossils?
Maybe. It depends on what kind of rock it is. If its a sedimentary rock and it's pretty old, then it will probably have some fossils in it. If its igneous the chances are not very likely i'd say.
