Asked by Anonymous
Circular depression can be found in the area near Fishers. What are these features called?
Answers
Answered by
Sandi
Pockmarks
Numerous circular to oblate depressions are concentrated in a roughly 8.6-km² area north of the Clumps moraine off the western tip of Fishers Island. The depressions are typically 5-6 m in diameter and extend about 0.2-0.3 m below the surrounding sea floor, but individual depressions can reach 24 m in diameter and 1.1 m in depth. At several places the depressions overlap, forming larger depressions that exceed 50 m across. We interpret these features to be pockmarks that formed during the escape of biogenic methane from underlying sediments of the Thames River glacial delta (Lewis and DiGiacomo-Cohen, 2000).
Numerous circular to oblate depressions are concentrated in a roughly 8.6-km² area north of the Clumps moraine off the western tip of Fishers Island. The depressions are typically 5-6 m in diameter and extend about 0.2-0.3 m below the surrounding sea floor, but individual depressions can reach 24 m in diameter and 1.1 m in depth. At several places the depressions overlap, forming larger depressions that exceed 50 m across. We interpret these features to be pockmarks that formed during the escape of biogenic methane from underlying sediments of the Thames River glacial delta (Lewis and DiGiacomo-Cohen, 2000).
There are no AI answers yet. The ability to request AI answers is coming soon!