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Open-File Report 03–273 |
About USGS / Science Topics / Maps, Products & Publications / Education / FAQ |
Compiled PowerPoint* Slides
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2003
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Part or all of this report is presented in Portable Document Format. The latest version of Adobe Acrobat Reader or similar software is required to view it. If you wish to download the latest version of Acrobat Reader free of charge, click here. This report is preliminary and has not been reviewed for conformity with the U.S. Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade names is for descriptive purposes only and does not imply endorsement by the U.S. Government. * Use of brand names does not constitute endorsement by the U.S. Geological Survey **Large File Warning: It is best to download a large PDF file to your hard drive rather than open it inside your browser. (A standard click may automatically open the PDF file inside the browser but doing so will result in a very slow load.) For guidance on how to do this, go to [http://cpg.cr.usgs.gov/toolbox/download_advice.html]. Downloading the PDF file may take several moments but will be worth the wait. Once it is downloaded, open the PDF from your hard drive using Adobe Acrobat—it will open in a fraction of the time it would take to open the PDF over the Internet. |
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Preface
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1U.S. Geological Survey, Denver, Colorado
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