GE354: Glacial and Quaternary Geology
Glacial and Quaternary Geology

Mean global temperatures of the past 5.5 million years, reflected in glacial-interglacial cycles since the onset of North Pacific Ocean stratification in the late Pliocene. [Notice in both diagrams that time runs from right to left.]
Below, the record of later Pleistocene CO2 and dust in the atmosphere, as recorded in the Vostok ice core from Antarctica. Note that CO2 has naturally ranged from about 180-290 ppm over this time interval in the atmosphere. It has now reached 400 ppm in the past 50 years; only the naive or self-deluded can believe that human activities had nothing to do with this increase.
Geology 354 ~~~~~~~ Autumn, 2012


Instructor: Robert E. Nelson
["Dr. Bob"] 		Text: GLACIAL ENVIRONMENTS
by Michael Hambrey
Office: Mudd 215 (ext. 3247) Lecture: MWF 11:00-11:50 a.m.
in Mudd 103
E-mail: renelson@colby.edu LABS are Mondays, 1:00-4:00 p.m.
in Mudd 103 & Field
Office hours: 1:00-3:00 p.m. Wednesdays
and by appointment 		My mailbox is in the Department
of Geology Office, Mudd 209
Web Page for Quaternary References:
http://www.colby.edu/geology/Quatresources.html
Maine Geological Survey Surficial Geology Index Page

NOTE: Blue dots precede our specific course materials;
RED dots precede outside readings.