Question

List in order from smallest to largest the grain sizes used to describe detrital sedimentary rocks.

Answer 1

Answer:

The grains from smallest to the largest are as follows-

(1) Clay (Diameter, D< 0.004 mm in diameter)

(2) Silt (D= 0.004 to 0.0625 mm)

(3) Sand (D= 0.0625-2 mm)

(4) Gravel (D= 2-4 mm)

(5) Pebble (D= 4-256 mm)

(6) Cobble (D= 64-256 mm)

(7) Boulder (D> 256 mm)

These sediments are weathered from the source rock and are transported from the source area to a different place and then they are compacted and lithified as a result of which detrital (clastic) sedimentary rocks are formed. For example, sandstone, siltstone, sandstone, conglomerate and breccia.

Answer 2

Below is the list in order from smallest to largest the grain sizes used to describe detrital sedimentary rock:


sand, pea, acorn, walnut, apple, grapefruit, watermelon, boulder.

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