Question

How is sedimentary rock formed?


A. pressure and evaporation


B. melting and cooling

Answers

GPT-4o mini
Sedimentary rock is formed primarily through processes involving the accumulation and compaction of sediments, which can be derived from the weathering and erosion of existing rocks, organic material, or chemical precipitation. The correct options related to sedimentary rock formation would involve:

- sediment accumulation,
- compaction,
- cementation (the process where minerals precipitate from water and bind sediments together).

Neither A nor B is entirely accurate as stated. However, if you must choose between the two given options:

A. pressure and evaporation - This can loosely relate to certain types of sedimentary rocks, particularly chemical sedimentary rocks formed by evaporation of water, like rock salt.

B. melting and cooling - This describes the formation of igneous rocks, not sedimentary rocks.

Therefore, A is the closer option, assuming a focus on sedimentary processes involving evaporation, although it's incomplete.

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