United States Geological Survey YearbookThe Survey - Geology |
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Page 7
... formation of the caldera . This coincidence suggested that recently renewed magma pressure rather than tec- tonic forces was the cause of this present bulge . During summer 1981 , Geological Survey volcanologists also began to notice ...
... formation of the caldera . This coincidence suggested that recently renewed magma pressure rather than tec- tonic forces was the cause of this present bulge . During summer 1981 , Geological Survey volcanologists also began to notice ...
Page 14
... formations , either bedded salt or salt domes ; basalt ; tuff ; argillaceous ( clayey ) formation ; and un- saturated valley - fill sediments . These can- didate host rocks are distributed widely , though unevenly , throughout the ...
... formations , either bedded salt or salt domes ; basalt ; tuff ; argillaceous ( clayey ) formation ; and un- saturated valley - fill sediments . These can- didate host rocks are distributed widely , though unevenly , throughout the ...
Page 16
... formation on the following : • Ground - water flow ; • Potentiometric surface ; • Chemical quality of ground water ; • Natural ground - water discharge areas ; • Depth to water table . This information is to be used to define the ...
... formation on the following : • Ground - water flow ; • Potentiometric surface ; • Chemical quality of ground water ; • Natural ground - water discharge areas ; • Depth to water table . This information is to be used to define the ...
Page 19
... formation ; an interstate highway system can be represented either by only those road segments actually classified as interstate roads or as a complete highway system made up of interstate roads and other roads which act as connectors ...
... formation ; an interstate highway system can be represented either by only those road segments actually classified as interstate roads or as a complete highway system made up of interstate roads and other roads which act as connectors ...
Page 21
... formations , and previously delineated resource areas have been digitized and correlated by using com- puter techniques . These data , merged with data on petroleum production on adjoining lands , will enable petroleum geologists to ...
... formations , and previously delineated resource areas have been digitized and correlated by using com- puter techniques . These data , merged with data on petroleum production on adjoining lands , will enable petroleum geologists to ...
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activity Administration Alaska Apalachicola Apalachicola River Assessment Basin California cartographic Cascade volcanoes City Commission conodont conterminous United Cooperative data base Denver Department of Public deposits digital data digital line graphs Earth Resources Observation earth science earthquakes Energy Environmental eruptions evaluation faults Federal agencies Federal Bldg fiscal year 1982 Flood Control Geologic Division Geologist ground water ground-water hazards hydrologic Investigations Irrigation kaolinite Landsat Long Valley Caldera magma major Mammoth Lakes Menlo Park ment million mineral resources Minerals Management Service monitoring National Center National Mapping Division Nevada oil and gas percent Planning Planning w potential Potomac River produced Puerto Rico quadrangle radiometer Regional Research Resources Observation Systems resurgent dome rocks sediments seismic square miles STOP studies Survey's techniques tidal Potomac River tidal river tion topographic Transportation U.S. Geological Survey volcanic Water Conservation District Water District water levels Water Management Water Resources Western zone Δ Δ