What type of sedimentary rocks form from the breakdown of larger rocks?

1 Answer
Don Mac
Jun 6, 2016

Mostly, clastic rocks - or rocks made up of smaller clasts from older eroded larger rocks.

Explanation:

Clastic rocks are defined by the predominate grain size and range from conglomerates and breccia (coarsest material) to sandstones, to siltstones to shales (finest grained materials). See pic.

http://faculty.chemeketa.edu/afrank1/rocks/sedimentary/sedclass.htm image source here

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