____________ sedimentary rocks form when rocks are broken down by weathering and erosion, and then compacted together by pressure.

Detrital sedimentary rocks form from fragments of preexisting rocks that have been broken down by weathering and erosion. These fragments are deposited and then compacted under pressure. Therefore, the correct choice is detrital sedimentary rocks; organic and chemical rocks form in different ways, and foliated describes a texture of some metamorphic rocks.

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