The oldest extensive glacial deposits preserved in: Finland, North America, South Africa, and Western Australia occurred______ years ago, which_____ took for evidence of his _________hypothesis.
A) 2.3 million; Mikhail Budyko; Big Chill
B) 250 million; Alfred Wegener; Continental Drift
C) 11,000; Lancelot du Lac; Big Tilt
D) 2.3 billion; Paul Hoffman; Snowball Earth

Question

Quizplus · Accepted Answer

The oldest extensive glacial deposits, found in regions including Finland, North America, South Africa, and Western Australia, date back to approximately 2.3 billion years ago. These deposits were used by Paul Hoffman as evidence for his Snowball Earth hypothesis, which suggests that the Earth was once almost entirely covered in ice.

The Oldest Extensive Glacial Deposits Preserved In: Finland, North America