GEOLOGY

EARTH SCIENCE

SEDIMENTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Geologists classify sedimentary rocks into three major groups: ____ rock, chemical rock, and organic rock.
A
Clastic
B
Limestone
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -For the purposes of the present discussion, three major categories of sedimentary rocks are recognized: (1) terrigenous clastic sedimentary rocks, (2) carbonates (limestone and dolomite), and (3) noncarbonate chemical sedimentary rocks.

Detailed explanation-2: -There are three different types of sedimentary rocks: clastic, organic (biological), and chemical.

Detailed explanation-3: -Sedimentary rock is classified into two main categories: clastic and chemical. Clastic or detrital sedimentary rocks are made from pieces of bedrock, sediment, derived primarily by mechanical weathering. Clastic rocks may also include chemically weathered sediment.

Detailed explanation-4: -Clastic sedimentary rocks are made from rock and mineral fragments that are compressed and cemented together to make a rock. Chemical sedimentary rocks precipitate from a fluid. Sometimes the precipitation is aided by organisms. Organic sedimentary rocks are made from the bodies of plants and/or animals.

Detailed explanation-5: -The sedimentary rocks are classified into three different types: Organic, Clastic and Chemical Sedimentary Rocks.

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