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What was formed from plants that died and decayed in swamps millions of years ago under layers of sediments?
Wiki User
∙ 7y ago
DIRT/SOIL like everything else!
Wiki User
∙ 12y ago
Wiki User
∙ 7y agoFossil fuels such as coal and oil
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Sedimentary rocks?
Sedimentary rocks are formed by the accumulation of sediments.
What type of rocks are formed when sediments are compacted over time?
Rocks that are formed by layers of sediments that are compacted over time are appropriately named sedimentary rocks.
How do layers in sedimentry rocks form?
The land where the rock was formed was underwater when the rock was formed. Over the years layers of Sediment sank to the bottom. Pressure formed the sediments into rock.
Briefly describe how petroleum and natural gas form?
Millions of years ago, the remains of plants and animals decayed and built up in thick layers. This decayed matter from more?
What mars look like inside?
Mars has a magma core with millions and millions of layers of rocks and sediments, just like what Earth has.
What kind of sedimentary rocks are formed when sediments are deposited in layers at the bottoms of lakes and oceans?
sedimentary rock formed by weathering and erosion
How were coal deposits formed in western Canada during mesozoic era?
Layers of sediments compressed the layers of vegetation to form the coal deposits.
What is the process by which sedimentary rocks are arranged in layers?
Each layer is deposited over time as the environment changes over millions of years. The process is deposition of differing sediments, forming strata. When buried at great pressure, the rock is formed, and the strata are evident. Layers may also be caused by lamination of the sediments or through mineral banding (especially in sandstones).
How is alluvial soil is formed?
Alluvial soils are transported soils. They are formed of sediments which are brought down by rivers during the passage of their flow. As time passes the sediments get deposited in the form of a layer one upon another. This increases the pressure on the low lying layers of sediments and the temperature in the layers forming the base increases. Then, the process continues for thousands of years and alluvial soil is formed.
A sedimentary rock is formed by what?
This is how they are formed: A river carries, (transports) pieces of broken rock to a lake or sea. The pieces of rock settle at the bottom, (they are deposited) They then form into layers. The sediments on top squish down the ones on the bottom, squeezing out all the water between the cracks. Over time, the sediments slowly cement together. It usually takes millions of years, but the layers eventually turn into sedimentary rocks.
Where are the oldest layers of a sandstone rock located?
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.
What type of rock is formed when layers of loose materials are compacted and cemented together?
Sedimentary rock is formed from the processes of compaction and cementation of sediments.
