Cycles of sea level rise and fall often create sandstone at the base, grade up into coal, and are called:

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Orlando Finley

Geography

14 December, 22:03

Cycles of sea level rise and fall often create sandstone at the base, grade up into coal, and are called:

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Cindy Lou Who · Answer 1

cyclothems

Explanation:

cyclothems

They are the alternating stratigraphic sequence of the non - marine and the marine sediments, which are interbedded with coal seams.

They consists of the repeated repeated sequence of some meters thick, which are on the sandstone resting on the erosional surface, passing upwards to the pelites and then topped by the coal.