U.S. Geological Survey ActivitiesThe Survey, 1981 - Geology |
From inside the book
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Page 19
... sulfide gas at 17,570 feet and bottomed at 20,102 feet in rocks of Mississippian age , but only minor shows of gas in Cretaceous rocks were noted . The Tunalik Test Well , in the extreme northwestern corner of the Reserve , encountered ...
... sulfide gas at 17,570 feet and bottomed at 20,102 feet in rocks of Mississippian age , but only minor shows of gas in Cretaceous rocks were noted . The Tunalik Test Well , in the extreme northwestern corner of the Reserve , encountered ...
Page 64
... sulfide - mineral deposits on very young glassy volcanic rocks . The initial work , which used unmanned vehicles , was immediately fol- lowed by manned submersible investigation of selected submarine springs , and mineral deposits and ...
... sulfide - mineral deposits on very young glassy volcanic rocks . The initial work , which used unmanned vehicles , was immediately fol- lowed by manned submersible investigation of selected submarine springs , and mineral deposits and ...
Page 65
... Sulfide minerals have been dredged from Guaymas Basin in the Gulf of California , and hot water vents similar to ... sulfide deposits form small shallow mounds occasionally topped by one or more conical sulfide spires or chimneys . The ...
... Sulfide minerals have been dredged from Guaymas Basin in the Gulf of California , and hot water vents similar to ... sulfide deposits form small shallow mounds occasionally topped by one or more conical sulfide spires or chimneys . The ...
Page 66
... Sulfide mineral deposits Massive sulfide deposits in ophiolites SOUTH Galapagos Rift AMERICA FIGURE 2. - Map showing the location of known massive sulfide deposits along the Pacific Ocean spreading centers , massive sulfide deposits in ...
... Sulfide mineral deposits Massive sulfide deposits in ophiolites SOUTH Galapagos Rift AMERICA FIGURE 2. - Map showing the location of known massive sulfide deposits along the Pacific Ocean spreading centers , massive sulfide deposits in ...
Page 67
... ( sulfide- rich ) or white ( sulfate- or silica - rich ) fluid . Other vents are inactive and rapidly disintegrating . Many active vent systems are inhabited by exotic communities of worms , crabs , and other organisms evidently supported ...
... ( sulfide- rich ) or white ( sulfate- or silica - rich ) fluid . Other vents are inactive and rapidly disintegrating . Many active vent systems are inhabited by exotic communities of worms , crabs , and other organisms evidently supported ...
Common terms and phrases
acid activities Alaska Argillite assessment Bldg Board Bureau California cartographic City coal Colorado Commission contaminants Cooperative County data base Denver Department of Public deposits Devonian Division Chief drilling drought earth science earthquake East Pacific Rise Enceladus energy eruption evaluation Exploration in Naval fault Federal agencies Federal and Indian feet fiscal year 1981 funds geologic hazards Geological Survey Professional geophysical ground water ground-water hydrologic Lake leases located ment miles million mineral resources mudflows National Center National Mapping Division National Petroleum Reserve Naval Petroleum Reserve northern Alaska nuclear oil and gas oil shale operations ophiolites Outer Continental Shelf PCB's percent Planning plugged and abandoned potential processes production Prudhoe Bay Regional Reimbursable program Reserve in Alaska Reston River San Andreas fault sand seismic Service sources South Barrow studies sulfide Survey Professional Paper Survey's tion toxic U.S. Geological Survey United Walakpa Water Resources