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Rasek [7]
3 years ago
12

Shale is a common type of sedimentary rock in which oil forms because A. silt and clay trap organic material as they are deposit

ed. B. boulders squeeze the water out of leaves. C. Shale has nothing to do with oil formation. D. gravel traps organic material as it's deposited.
Geography
1 answer:
siniylev [52]3 years ago
5 0

Answer:

A.

Explanation:

Shale is a sedimentary rock that is often associated with oil deposits. This is due in part to the tiny and very fine grains that make up shale. As the sediments are compacted, organic matter is trapped by the particles of clay and silt.

Later, as sedimentation continues and the layers are buried farther underground, the heat and pressure convert some of the organic material into oil. While much of the gas escapes the porous shales, some also remains trapped in the rock layer.

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Explanation:

On the picture we can see several layers of rock. Some of the layers have not been disturbed, so the principle of superposition can be applied to them. Some of the layer though have been disturbed by geological processes, so the layers are not at the same level because of it. On top of it, there is also an intrusion that has managed to further cause disturbance through all of the layers.

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  • Layer M is younger layer, and it can easily be seen as it totally covers the layer F below it.
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  • Layer H is not really a layer, but it is an intrusion, which has formed after magma managed to cut through all the layers and later solidify. It is the youngest formation.

Learn more about intrusive and extrusive rocks brainly.com/question/10413835

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