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The three main types of sediment are:

A. siliciclastic, erosional, ionic
B. siliciclastic, biological, chemical
C. clastic, fossiliferous, bioclastic
D. bioclastic, chemical, granitic

Answer :

The three main types of sediment are siliciclastic, biological, and chemical. Siliciclastic refers to clastic sedimentary rocks formed from rock fragments, while biological and chemical sediments create organic and chemical sedimentary rocks respectively, such as coal or precipitates from water. The correct option is b.

Sedimentary rocks are broadly categorized into clastic (or detrital) and chemical. Clastic sedimentary rocks are formed from fragments of other rocks and are often classified by grain size. Examples include sandstone, conglomerate, breccia, shale, and siltstone.

Chemical sedimentary rocks are formed by the precipitation of minerals from water, known as precipitates. Biochemical or organic sedimentary rocks such as coal, oil, and natural gas derive from the accumulation of organic material, which needs to be buried quickly to prevent decay.

Biological processes can lead to the creation of biochemical sediments, such as the shells of foraminifera, which accumulate to form sedimentary rock on the ocean floor.

The three main types of sediment are siliciclastic, biological, and chemical. Siliciclastic refers to clastic sedimentary rocks formed from rock fragments, while biological and chemical sediments create organic and chemical sedimentary rocks respectively, such as coal or precipitates from water. The correct option is b.

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