Crazyj6467 Crazyj6467
  • 21-08-2019
  • Geography
contestada

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

Respuesta :

Kristiania Kristiania
  • 22-08-2019

Answer:

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 .

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