GIS Data
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Glacial map of Ohio Glacial map of Ohio
No abstract available.
Iron in the United States, exclusive of Alaska and Hawaii Iron in the United States, exclusive of Alaska and Hawaii
The iron-ore deposits in the United States (exclusive of Alaska and Hawaii) are shown on the accompanying map; many iron-bearing deposits that are of lesser or only potential value are also shown. Because these deposits range widely in extent, two general categories of symbols are used, each of which is subdivided as explained below. The first category is for deposits of such restricted...
Map of southeastern Maine showing heavy metals in stream sediments Map of southeastern Maine showing heavy metals in stream sediments
This map presents the initial results of a geochemical reconnaissance of stream sediment in southeastern Maine. Its purpose is to identify metal-rich areas that might be favorable for further detailed exploration.
Paleotectonic maps of the Permian System Paleotectonic maps of the Permian System
No abstract available.