Which of the following statements is NOT true about clastic sedimentary rocks?
A) Clasts in a conglomerate or breccia can be different rock types or can be all the same rock type.
B) To be called a sandstone, quartz must make up more than 95 percent of the grains.
C) The amount of pore space decreases as a sand is compacted into sandstone.
D) Siltstone is coarser than shale.

Question

Quizplus · Accepted Answer

Sandstone does not require quartz to make up more than 95 percent of the grains to be classified as such. The statement overstates the quartz requirement for sandstone classification.

Which of the Following Statements Is NOT True About Clastic