Answer:
The series of transgressions and regressions that produce cyclothems were likely produced by Glaciation.
Step-by-step explanation:
- Glaciation is a movement of glacier which can be very intense sometimes. The plate tectonic theory suggests that the continental movement make the glacier to move.
- These movements cause the production of cyclothems. Cyclothemes are the sequences of "marine and non-marine sediments".
- The various types of 'sedimentary rock beds' occurred in the specific sequences in the interior regions of continents.
- These order sequence of rocks are called as the cyclothems. The cyclothems are used worldwide to explore the coal deposits.