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Geochronology of plutonic rocks and their tectonic terranes in Glacier Bay National Park and Preserve, southeast Alaska
We have identified six major belts and two nonbelt occurrences of plutonic rocks in Glacier Bay National Park and Preserve and characterized them on the basis of geologic mapping, igneous petrology, geochemistry, and isotopic dating. The six plutonic b |
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Geologic map of the east half of the Lime Hills 1:250,000-scale quadrangle, Alaska
This map, compiled from geologic mapping conducted (1985-1992) by the U.S. Geological Survey as part of the Alaska Mineral Resource Assessment Program, builds upon previous USGS work unraveling the magmatic history of the Alaska-Aleutian Range batholith. |
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Preliminary scientific results of the Creede Caldera Continental Scientific Drilling Program: Rock magnetic studies of the Oligocene Creede Formation and prospects for a polarity stratigraphy
Rock magnetic studies in this area contribute to paleomagnetic stratigraphy and refine a model of ore formation. |
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Digital geologic map of the Nevada Test Site and vicinity, Nye, Lincoln, and Clark Counties, Nevada, and Inyo County, California, revision 4
GIS data for geologic units and structural features, with aeromagnetic and gravity maps in PDF |
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