Understanding Your Environment: Bedrock Geology Activity 1 - Sedimentary Rocks and the Geologic History of Your Community

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Understanding Your Environment book
It's About Time/AGI

Investigate - Part C: Sedimentary Rocks of Your Community

Examine the legend of a geologic map of Ohio .

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Preparing for the Chapter Challenge

Describe the type of environment in which each sedimentary rock might fave formed. Consult a geologic map of Ohio for information.

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Inquiring Further

Visit the USGS Cascades Volcano Observatory web site to find out more about their monitoring efforts.

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Sedimentary Rocks in the Earth's Crust

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Clastic, Chemical, and Organic Sedimentary Rocks

  • Historical Geology Online Laboratory Manual - Georgia Perimeter College
    Click on the "Lab 4 Sedimentary Rocks" link. Read a thorough discussion of clastic, chemical, and organic sedimentary rocks. Illustrations accompany each description.
  • Characteristics of Sedimentary Rocks - by Dr. Michael Pidwirny, University of British Columbia Okanagan
    The properties of sedimentary rocks are introduced in this illustrated section from an online textbook (Fundamentals of Physical Geography, Michael Pidwirny, University of British Columbia Okanagan, Canada). Key terms are linked to definitions in an accompanying glossary.

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How Sediment Becomes Rock

  • Bedform Sedimentology Site - USGS
    Read an in-depth background on sedimentary features such as cross bedding, bedforms, and paleocurrents.

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Classifying Sedimentary Rocks

  • Sedimentary rocks, by Pamela Gore, Georgia Perimeter College
    Part of a physical geology course, these notes provide a brief, illustrated introduction to sedimentary rocks, covering terrigenous sedimentary rocks (also called detrital or clastic), chemical/biochemical sedimentary rocks (including the evaporites, the carbonates and the siliceous rocks), organic sedimentary rocks, and other types.
  • "Sedimentary Rocks " - USGS
    This site explains the classification of sedimentary rocks based on their quartz, feldspar and lithic composition.
  • "Sedimentary rocks and sedimentary rock classification" - Ocean Drilling Program

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