Which of the following statements is true?
A)Cementation and compaction both decrease porosity.
B)Cementation increases porosity,whereas compaction decreases porosity.
C)Cementation decreases porosity,whereas compaction increases porosity.
D)Cementation and compaction both increase porosity.

Question

Quizplus · Accepted Answer

Cementation and compaction are both geological processes that occur in sedimentary rocks. Cementation involves the precipitation of minerals within the spaces between sediment grains, which binds them together and reduces the space (porosity) between them. Compaction is the process where sediment grains are pressed together under the weight of overlying sediments, which also reduces the space (porosity) between them. Therefore, both processes decrease porosity.

Which of the Following Statements Is True