Glacially deposited strata were important in the development of continental drift theory because ____.
A) the distribution of glacial deposits indicated that the entire Earth must have been glaciated
B) the distribution of coal-swamp deposits indicated that the entire Earth must have been very warm
C) the glacial deposits indicated that there must have been many very large glaciers on several continents
D) the glacial deposits indicated that all of the southern continents must have been closer to the South Pole and contiguous
E) the glacial deposits indicated that climate can change dramatically over geologic time

Question

Quizplus · Accepted Answer

Glacial deposits were important evidence for continental drift theory because they indicated that all of the southern continents must have been closer to the South Pole and contiguous. The consistent pattern of glacial deposits and striations across several continents suggested that they were once joined together and experienced similar glacial periods. This supported the idea of continental drift, which proposed that the continents were once a single supercontinent, and slowly drifted apart over geologic time.

Glacially Deposited Strata Were Important in the Development of Continental