The sequence that represents alternating glacial/interglacial periods during the Pennsylvanian is clastic wedges.
What do you mean by Glacial/Interglacial periods?
Glacial/ Interglacial periods may be defined as a time period during which accumulation of ice takes place and degradation of ice occurs respectively.
Clastic wedges may be referred to as the thick accumulation of sediments that are eroded as well as deposited by the land through the activity of mountains.
Therefore, the sequence that represents alternating glacial/interglacial periods during the Pennsylvanian is clastic wedges.
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