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Fundamentals of Physical Geography

2nd Edition
James Petersen
ISBN: 9781133606536

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BuyFindarrow_forward

Fundamentals of Physical Geography

2nd Edition
James Petersen
ISBN: 9781133606536
Textbook Problem

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FIGURE 10.11 Sedimentary rocks are made from broken pieces of preexisting solids (clasts), organic remains, or chemical precipitates. Clastic sedimentary rocks are further classified by the size and/or shape of the sediment particles they contain.

Why are there different sizes and shapes of clastic sediments?

To determine

The reason why there are different sizes and shapes of clastic sediments.

Explanation

Clasts are the broken pieces of solids such as pre-existing rocks, shell fragments, and bones. In increasing order of size, clasts range from clay, silt, and sand to gravel, which is a common category for any piece bigger than sand (bigger than 2.0 mm) and includes pebbles, granules, cobbles, and boulders.

Clastic sediments are deposited on a beach, riverbed, lake bottom, sand dune, the ocean floor, or other environments where solid fragments accumulate...

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