1
Q
What was the Pleistoscene Epooch characterized for?
A
By regular cycles of growth and decay of Northen Hemisphere continental ice sheets.
2
Q
What 2 factors causes cyclicty of glaciation?
A
Distribution of sunlight (Insolation)
Atmospheric CO2
3
Q
A
4
Q
Name 4 glacial deposits
A
Glacial strations: Indicate the direction of past glacial movement.
Moraines: Ridges of sediment.
Till: Sediment
Loess: Windblown deposits.
5
Q
What continuous record of climate change was being deposited on the ocean floor?
A
it was contained in the isotopic composition of the skeletons of marine organisms. The ratio
of the stable isotopes 18O and 16O in the calcium carbonate skeletons of marine plankton depends on the
temperature of that water.
the colder the water the more 18O.
6
Q
A
Geosystem
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