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 Date: 2007-03-28 16:23:07Heat conduction Cratons Geology of Minnesota Lake Nipigon Superior craton Midcontinent Rift System Geothermal gradient Lake Superior Nipigon Embayment Geology Heat transfer Proterozoic |
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| Found at USGS Potential for New Nickel-Copper Sulfide Deposits in the Lake Superior Region Scientists from the U.S. Geological Survey are evaluating the potential forDocID: 14XGY - View Document |
| [removed]Precambrian Research Center Natural Resources Research InstituteDocID: ZtRz - View Document |
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