United States Geological Survey YearbookThe Survey, 1987 - Geology |
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Page 5
... continued , would have caused total separa- tion of the continent on either side of the rift and the formation of an ocean basin like the present - day Atlantic Ocean . For rea- sons not yet fully understood , the rifting stopped before ...
... continued , would have caused total separa- tion of the continent on either side of the rift and the formation of an ocean basin like the present - day Atlantic Ocean . For rea- sons not yet fully understood , the rifting stopped before ...
Page 7
... continued so that older flows were folded and tilted . Volcanism ceased , but subsidence of as much as 6 miles continued as a thick , postvolcanic sedimentary sec- tion filled the graben . Ground water accounts for 12 percent ( 144 ...
... continued so that older flows were folded and tilted . Volcanism ceased , but subsidence of as much as 6 miles continued as a thick , postvolcanic sedimentary sec- tion filled the graben . Ground water accounts for 12 percent ( 144 ...
Page 12
... To Protect Ground Water Between 1970 and 1980 , there was a significant transition in the USGS coopera- tive programs in Connecticut . Although map inventories and research continued , a major part of. 12 U.S. Geological Survey Yearbook ...
... To Protect Ground Water Between 1970 and 1980 , there was a significant transition in the USGS coopera- tive programs in Connecticut . Although map inventories and research continued , a major part of. 12 U.S. Geological Survey Yearbook ...
Page 13
... continued this dialogue with the user community through workshops , guidebooks , and other out- reach programs for local land - use commis- sions . The final phase of the integration proc- ess , the use of natural - resource information ...
... continued this dialogue with the user community through workshops , guidebooks , and other out- reach programs for local land - use commis- sions . The final phase of the integration proc- ess , the use of natural - resource information ...
Page 15
... continued integra- tion of surface- and ground - water quality protection programs and will require a thorough understanding of the hydrology of each major drainage basin . Cooperative programs are continuing to move from natural ...
... continued integra- tion of surface- and ground - water quality protection programs and will require a thorough understanding of the hydrology of each major drainage basin . Cooperative programs are continuing to move from natural ...
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activities Administration agencies Alaska aquifer basin Bureau Calcasieu River cartographic CD ROM Chief City City of w coal color Commission concentrations Connecticut contamination cooperative Coordination County crater data base Department of Public deposits drilling Earth Science earthquakes energy Enewetak Environmental facilities Federal feet Figure fiscal year 1987 geographic information systems geologic map Geologist geophysical gram graphic ground water hazards hydrologic Hydrologist investigations Lake Nyos land located lower Calcasieu River major Management ment miles million mineral resources mining models National Center National Mapping Division Office organic compounds Park percent Planning processes production projects Province quadrangle Regional Reston rocks samples San Andreas fault San Joaquin River scientific scientists sedimentary sediments seismic selenium Service South Stop studies surface Survey's techniques tion topographic Transportation U.S. Geological Survey United users USGS Vernalis Volcano Water District Water Resources water-use zone