Glacial deposits preserved in the rock record provide evidence for major continental glaciations during
A)the Ordovician period
B)Precambrian time.
C)the Permian-Pennsylvanian periods.
D)the Ordovician period,Precambrian time,and the Permian-Pennsylvanian periods.

Question

Quizplus · Accepted Answer

Glacial deposits in the rock record from the Ordovician period, Precambrian time, and the Permian-Pennsylvanian periods indicate that major continental glaciations occurred during these times. Evidence of glaciation, such as striated rock surfaces, glacial till, and dropstones, has been found from each of these periods, demonstrating the widespread impact of ice ages throughout Earth's history.

Glacial Deposits Preserved in the Rock Record Provide Evidence for Major