Large deposits of gypsum and other evaporite minerals are evidence of
A)volcanic activity during the Cambrian period.
B)dried up shallow seas from the Silurian period.
C)seafloor spreading during the Permian period.
D)glaciation during the Triassic period.

Question

Quizplus · Accepted Answer

Gypsum and other evaporite minerals are typically formed when shallow seas evaporate and leave behind these minerals. The presence of large deposits of these minerals in a particular rock layer is evidence that the area was once covered by a shallow sea that dried up during the time the rock layer was formed.

Large Deposits of Gypsum and Other Evaporite Minerals Are Evidence