United States Geological Survey Yearbook |
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Page 22
An introduced ( or epigenetic ) suite of trace elements in some samples also is
present . Concentrations of the introduced - suite elements are commonly very
low in the wholerock samples , but they are enhanced many times in the
insoluble ...
An introduced ( or epigenetic ) suite of trace elements in some samples also is
present . Concentrations of the introduced - suite elements are commonly very
low in the wholerock samples , but they are enhanced many times in the
insoluble ...
Page 29
Directing all sectors of the Nation's scientific strength towards discussion of the
multifaceted Geological Survey research effort on mineral resources will help
maintain a research agenda that is responsive to present problems , draws on a
past ...
Directing all sectors of the Nation's scientific strength towards discussion of the
multifaceted Geological Survey research effort on mineral resources will help
maintain a research agenda that is responsive to present problems , draws on a
past ...
Page 39
Geologic mapping and chronological studies conducted under the Geologic
Framework Program continue to increase our knowledge of past and present
interaction between the huge plates that make up the Earth's crust . These
studies have ...
Geologic mapping and chronological studies conducted under the Geologic
Framework Program continue to increase our knowledge of past and present
interaction between the huge plates that make up the Earth's crust . These
studies have ...
Page 52
At present , the network provides access to data bases relating to geographic
names , sources of water resources data , news releases of the Geological
Survey , status of digital mapping , and bibliographies of geologic and water
resources ...
At present , the network provides access to data bases relating to geographic
names , sources of water resources data , news releases of the Geological
Survey , status of digital mapping , and bibliographies of geologic and water
resources ...
Page 99
For example , a high concentration of nitrogen in the form of nitrate is present in
the treated sewage . Within a few tens of feet in the direction of ground - water
flow from the infiltration beds , nitrate is found at a much lower concentration , but
...
For example , a high concentration of nitrogen in the form of nitrate is present in
the treated sewage . Within a few tens of feet in the direction of ground - water
flow from the infiltration beds , nitrate is found at a much lower concentration , but
...
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activities addition Administration agencies Alaska analysis aquifer areas assessment Assistant associated basins Bldg Board Bureau California cartographic changes Chief City City of w coal collected Commission completed concentrations Conservation contaminants continued Control Cooperative County data base Department deposits distribution District District w Division earthquake energy Environmental eruption Federal feet Figure fiscal year 1984 flow geographic glacier ground water ground-water hazards hydrologic important increase International irrigation Lake land located major Management maps measured miles million mineral resources models National Center Natural needs North Office Operations organic Planning potential prepared present problems production Public quadrangle range record Regional reports River rocks scientific scientists selected Service showing sources stations STOP studies supplies surface techniques tion Transportation trends types U.S. Geological Survey understanding United waste Water Resources zone