Activity 4 - Rock Units and Your Community

Use the resources listed below to help you complete this activity.

State-Based Resources
General Resources

State-Based Resources: Understanding and Applying What You Have Learned

Examine the geologic map and geologic cross sections of North Dakota .

There are currently no resources listed for this state.

Preparing for the Chapter Challenge

Using your understading of rock units, describe the rock units near North Dakota .

There are currently no resources listed for this state.

General information related to this activity:

Rock Units

Geologic Maps and Mapping -
USGS
Learn more about how to understand geologic maps.

Reading Geologic Maps, About.com
Follow this tutorial on how to read and use geologic maps.

National Cooperative Geologic Mapping Program - USGS
Read and explanation of how geologic features and rock units are shown on geologic maps.

Sedimentary Rock Units

Grand Canyon Explorer
Read about such topics as: how was it formed?; where did all the rock come from?; why does it look like it does?; when did all this happen?

Igneous Rock Units

Atlas of Igneous and Metamorphic Rocks, Minerals, and Textures - University of North Carolina
See examples of plutonic (intrusive igneous rocks) and volcanic (extrusive igneous rocks) textures.

Metamorphic Rock Units

Atlas of Igneous and Metamorphic Rocks, Minerals, and Textures
See examples of different microtextures of metamorphic rocks.

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Last updated: May 11, 2010

This project is supported, in part, by the National Science Foundation and the AGI Foundation. Opinions expressed are those of the authors and not necessarily those of the Foundation.