Cycles of sea level rise and fall often create sandstone at the base,grade up into coal,and are called ________.
A)geotherms
B)sedithems
C)bathycycles
D)cyclothems

Question

Quizplus · Accepted Answer

Cyclothems are sedimentary rock layers that are characterized by cycles of sea level rise and fall, which often create sandstone at the base and grade up into coal. This cyclical pattern is caused by variations in glacial ice volume and climate, and can be seen in many different parts of the world.

Cycles of Sea Level Rise and Fall Often Create Sandstone