The oldest layers of undisturbed sediment are at the bottom.
In disturbed sediments without layers, the relative age of the sediments would be unknown.
Sandstone is a sedimentary rock. Sedimentary rocks form from sediments that deposited by the wind and water. Over the time those sediments will get pressed and cemented together. It can take millions of years for sediments to become a rock. So the oldest layers of a sandstone are on a bottom.
Normally, the oldest rocks are found at the bottom of the layers, being the first of the sediments that were deposited.
FALSE
superpostion
In disturbed sediments without layers, the relative age of the sediments would be unknown.
Sandstone is a sedimentary rock. Sedimentary rocks form from sediments that deposited by the wind and water. Over the time those sediments will get pressed and cemented together. It can take millions of years for sediments to become a rock. So the oldest layers of a sandstone are on a bottom.
Normally, the oldest rocks are found at the bottom of the layers, being the first of the sediments that were deposited.
true A+
true A+
FALSE
In the geological column , scientists have learned that rocks are stacked in layers. The oldest fossils are located in the deepest layers, a vertical timeline.
Layers represent different periods of time. They are caused by factors such as wind, water, and gravity hardening them into distinct layer.
superpostion
superpostion
The action of water and gravity cause them to form in layers.
Sedimentary rocks are formed by the accumulation of sediments.