GENERAL GEOLOGY

GEOLOGY

GEOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Arrange the grain sizes for sedimentary rocks in the correctorder from small to large
A
Clay, silt, sand, granules, pebbles, cobbles, boulders
B
Clay, silt, sand, pebbles, granules, cobbles, boulders
C
Clay, silt, sand, granules, cobbles, pebbles, boulders
D
Clay, silt, sand, pebbles, granules, boulders, cobbles
Explanation: 

Detailed explanation-1: -However, general usage is as follows ranging from largest to smallest: boulders, cobbles, gravel, sand, silt, and clays. Sediments form from the disintegration of rocks.

Detailed explanation-2: -Formation of Sedimentary Rocks Sedimentary rocks are the product of 1) weathering of preexisting rocks, 2) transport of the weathering products, 3) deposition of the material, followed by 4) compaction, and 5) cementation of the sediment to form a rock.

Detailed explanation-3: -The most important geological processes that lead to the creation of sedimentary rocks are erosion, weathering, dissolution, precipitation, and lithification.

Detailed explanation-4: -Gravel is an overall name for large sediment grain size, which includes boulder, cobble, and pebble. Sand includes sediment grains ranging in size from 2mm to 0.625 mm. Silt is the name of a sediment grain that range in size from 0.625 mm to 0.0039 mm. Mud is the smallest grain size and is also known as clay.

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