I think it is 29041584 ft.
The astronomical event that represents the great serpent mound is Halley's Comet.
Answer:
1. Compaction occurs where pressure is placed on loosely packed sediment. The volume of the sediment is reduced and water is squeezed out.
2. Cementation occurs when mineral-bearing water circulates among the grains, hardens, and cements the sediment grains together. This process is most effective when lithifying sand and gravel-sized sediments.
Explanation: