GENERAL GEOLOGY

GEOLOGY

CRYSTALLOGRAPHY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
These rocks are formed when little bits of rock get squished together and harden into layers.
A
metamorphic rocks
B
sedimentary rocks
C
igneous rocks
D
None of the above
Explanation: 

Detailed explanation-1: -Clastic sedimentary rocks are made up of pieces (clasts) of pre-existing rocks. Pieces of rock are loosened by weathering, then transported to some basin or depression where sediment is trapped. If the sediment is buried deeply, it becomes compacted and cemented, forming sedimentary rock.

Detailed explanation-2: -Sedimentary rocks are formed in three ways from these different sized sediments. A sedimentary rock is a layered rock that is formed from the compaction, cementation, and the recrystallization of sediments. Compaction is the squeezing together of layers of sediment due to the great weight of overlying layers of rock.

Detailed explanation-3: -Metamorphic rocks are often squished, smeared out, and folded. Despite these uncomfortable conditions, metamorphic rocks do not get hot enough to melt, or they would become igneous rocks! Common Metamorphic Rocks: Common metamorphic rocks include phyllite, schist, gneiss, quartzite and marble.

Detailed explanation-4: -Sedimentary rocks are one of three main types of rocks, along with igneous and metamorphic. They are formed on or near the Earth’s surface from the compression of ocean sediments or other processes.

Detailed explanation-5: -A clastic rock is a sedimentary rock that forms when rock fragments are (compacted) squeezed together and then cemented. Clastic rocks are grouped by the size of the rock fragments, or particles, of which they are made.

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