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Why Do Ice Ages Occur? - Part 2
This document provides an explanation of the factors that are thought to drive the growth and retreat of continental glaciers which spread across the Earth during four periods of geologic history. These factors are thought ot be related to variations in Earth's orbit.
Intended for grade levels:
  • High (9-12)
  • College (13-14)
Type of resource:
  • Text:
    • Ref. material
  • Cryology
  • Geological Sciences:
    • Geologic time
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Copyright and other restrictions information are unknown.
DLESE Catalog ID: NASA-Edmall-480
Resource contact / Creator / Publisher:
Publisher: The Illinois State Museum