In order from smallest to largest the grain sizes used to describe detrital rocks?

Answer 1

Detrital sediment is rock in small particles or other material worn or broken away from a mass, as by the action of water or glacial ice. They include (in decreasing size) boulders, cobbles, pebbles, sand, silt, and clay.

Answer 2

In ascending order of grain size one can find

mudstones (dominantly clay)

siltstones (dominantly silt)

sandstones (dominantly sand)

conglomerates / breccias (dominantly gravel)

Each of these rock types can be further specified as they are only endmembers and a virtually infinite number of possible varities of sedimentary rocks results from their grain size distribution.

For example a silty fine sandstone would be a sandstone made up mostly by fine sand containing some silt as well.

Answer 3

Rough sediment grading from largest to smallest in diameter would include the following:

Boulder--larger than 256 mm

Cobble--256 to 64mm

Pebble--64 to 2 mm

Sand--2 to 1/16 mm

Silt--1/16 to 1/256 mm

Clay--less than 1/256 mm

Answer 4

clay-sized grains, silt-sized grains, sandstone and pebbles

Answer 5

because some are big and small like a grain

Answer 6

Clay-sized, silt-sized, sand-sized, pebbles in my science textbook New York science pg.76

Answer 7

Shale, Sandstone, Conglomerate