Which of the following is the correct listing of the North American glacial stages from older to younger?
Nebraskan, Kansan, Illinoian, Wisconsinan
How do icebergs in the North Atlantic Ocean originate?
by calving of large piedmont glaciers in Greenland
A cirque represents an erosional feature formed in what was an important accumulation zone for snow and ice at the upstream head of a glacier.
A ________ cross-valley profile is typical of canyons and valleys eroded and deepened by alpine or valley glaciers
Which one of the following applies to a valley glacier that lengthens (extends its terminus downslope) over a period of many years?
accumulation exceeds wastage
What type of moraine is formed by the merging of two lateral moraines at a junction of two valley glaciers?
Rapid surge movements of the Earth's tectonic plates offer a convincing explanation for the advances and retreats of the Pleistocene ice sheets.
A ________ would logically be situated next to a large end moraine or terminal moraine.
Eccentricity, obliquity, and precession are three factors involved in the Milankovitch astronomical explanation of why the Pleistocene continental ice sheets alternately grew and shrank in size.
When a glacier is retreating, the upstream ice is still moving forward toward the downstream terminus of the glacier.
Till is an unsorted sediment deposited directly from the melting glacial ice; stream action is not involved
Great Salt Lake in Utah is the shrunken, salty remnant of a much larger, Pleistocene, pluvial lake called Lake Bonneville.
All of the following are thought to possibly contribute to the formation of glaciers except for ________.
The downstream end or snout of a glacier advances over periods of time during which ablation exceeds accumulation.