| Found in Collection(s): | Click on the collection logo for more information.
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| Collection Name: | Geosciences Gateways and Resources
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| Collection Description: | The Geosciences Gateways and Resources collection is comprised of web portals, web sites, and individual digital resources in many areas of the geosciences, including atmospheric sciences, environmental sciences, geology, geophysics, hydrology, oceanography, physical geography, soil science, and other Earth science subjects. Here may be found educational materials for geoscience educators and learners (early childhood through graduate school), resources intended for the general public, and materials aimed at research communities in the geosciences. |
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Collection Information:
| Grade Level |
Elementary School
Graduate/Professional
High School
Higher Education
Informal Education
Middle School
Pre-Kindergarten
Technical Education (Lower Division)
Technical Education (Upper Division)
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| Intended Audience |
Educator
General Public
Learner
Professional/Practitioner
Researcher
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| Link |
Http://www.nsdl.org/collection/geosciences/
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| Resource Type |
Collection
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| Subject Keyword(s) |
Geoscience
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| Resource Title: | Quarternary Glaciations in Illinois (GeoNote 3)
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| Description: | This brief publication from the Illinois State Geological Survey describes how over the past 1.6 million years, known as the Quaternary (kwa-TURN-ah-ree) Period of geologic time, most of the northern hemisphere above the 50th parallel was repeatedly covered by glacial ice. The cooling of the earth’s surface began at least 2 million years ago, and with that cooling, ice sheets eventually formed in subarctic regions and spread outward until they covered the northern parts of North America. With ongoing climatic change during this period, these ice sheets would form and reform many times. |
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Additional Resource Information
| Author |
Contributed By Dwain J. Berggren
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| Contributor(s) |
Revised January 2000 By Myrna M. Killey
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| Grade Level |
General Public
High School
Higher Education
Informal Education
Middle School
Technical Education (Lower Division)
Undergraduate (Lower Division)
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| Intended Audience |
Educator
General Public
Learner
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| Publisher / Resource Provider |
Illinois State Geological Survey
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| Resource Type |
Article
Audio/Visual
Illustration
Image
Nonfiction Reference
Reference Material
StillImage
Text
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| Subject Keyword(s) |
Geoscience
Glaciers
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