United States Geological Survey YearbookThe Survey, 1985 - Geology |
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Page 17
... basins , and the offshore areas included in the Exclusive Economic Zone . Investi- gations in these areas encompass a wide range of mineral - deposit types but have a special focus on strategic and critical minerals . This term ...
... basins , and the offshore areas included in the Exclusive Economic Zone . Investi- gations in these areas encompass a wide range of mineral - deposit types but have a special focus on strategic and critical minerals . This term ...
Page 18
... basin that may contain major cobalt , nickel , platinum and copper deposits Major mineral deposits in exposed basement Steelville .Flat River Fredericktown Iron ore Iron ore Some potential. 1000 5000 SD 46 N MN WI 100 ° W 1000 IA 88 ° W ...
... basin that may contain major cobalt , nickel , platinum and copper deposits Major mineral deposits in exposed basement Steelville .Flat River Fredericktown Iron ore Iron ore Some potential. 1000 5000 SD 46 N MN WI 100 ° W 1000 IA 88 ° W ...
Page 19
... Basins Mesozoic rift basins , formed between 205 and 240 million years ago , are another potential domestic source of minerals , including nickel , cobalt , and platinum - group elements for which the United States presently depends ...
... Basins Mesozoic rift basins , formed between 205 and 240 million years ago , are another potential domestic source of minerals , including nickel , cobalt , and platinum - group elements for which the United States presently depends ...
Page 22
... estimate of mineral resources so that PACIFIC MOUNTAIN SYSTEM INTER MONTAN PLATEAUS Basin and Rang LAURENTIAN ( URLAND LAM OZARK PLATEAUS RPALACHIAN ATLANTIC HIGHLANDS PLAIN the mineral - resource value of an area can be 22.
... estimate of mineral resources so that PACIFIC MOUNTAIN SYSTEM INTER MONTAN PLATEAUS Basin and Rang LAURENTIAN ( URLAND LAM OZARK PLATEAUS RPALACHIAN ATLANTIC HIGHLANDS PLAIN the mineral - resource value of an area can be 22.
Page 32
... basins in the eastern United States show a contrasting trend of decreasing copper with a decreasing nickel- cobalt ratio ( trend 2 ) . Copper content in the trend 2 group is as much as one - half to one - third lower than it is in rocks ...
... basins in the eastern United States show a contrasting trend of decreasing copper with a decreasing nickel- cobalt ratio ( trend 2 ) . Copper content in the trend 2 group is as much as one - half to one - third lower than it is in rocks ...
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activities Alaska aquifer areas Assistant Bacillus cereus basins Bureau California cartographic cartographic data base City coal Columbia Glacier Commission contaminants Control Cooperative Denver Department of Public digital cartographic data digital data earthquake energy Environmental eruption Federal agencies Federal Bldg feet fiscal year 1984 flow fluid inclusions geochemical geographic geographic information systems Geologist geophysical ground water ground-water hazards High Plains hydrologic ical image map information systems investigations irrigation Lake land Landsat lava located Loki Patera major Management Mauna Loa million mineral deposits mineral resources models monitoring National Center National Mapping Division Office offshore Parkfield Parkfield earthquake Planning potential production quadrangle radar Regional remote sensing River rocks San Andreas fault scientific sediment Service sources square miles STOP studies sulfur surface Survey scientists Survey's techniques tion topographic maps trends U.S. Geological Survey Volcano Water Conservation District Water District zone