LISS.398A TECHNOLOGY, ENVIRONMENT and HUMAN ADAPTATION:
PART I EARLY PEOPLES in
the NEW WORLD
CLIMATE CHANGE: OCEAN BED CORE EVIDENCE
Marine microorganisms (forminifera) produce CaCO3 (calcium
carbonate) in their shells from the oxygen in sea water. When
they die the shells fall to the bottom of the ocean and accumulate in
sedimentary strata. Thus, a record of
O18/O16 ratios
in cross sections of ocean bed cores provides a record of
relative glacial accumulation.
Colorado School of Mines
Division of Liberal Arts and International Studies
Dr. Joseph D. Sneed
jsneed@mines.edu
