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

Question

Geography

Alex Peters

8 November, 06:34

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

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Answers (1)

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Deshawn Cooper · 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.