What was the primary way sediment was transported to North America (east coast) continental margin
during the last ice age?
a. Rivers carry the sediment right to the shelf edge.
b. Strong currents carry the sediment to the contential shelf edge.
c. Wind blows sediment from the continent to the shelf edge
d. Glaciers
ANS: A
The North American continental shelf was exposed above sea level during the last ice age. Rivers
traversed the shelf and transported sediment onto the shelf. This allows sediments from the last ice
age to remain on the ocean floor. Information can be found in the section Neritic Sediments Overlie
Continental Margins.
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