James A Smith
James A Smith is a Geophysicist with the Earthquake Hazards Program.
Science and Products
Filter Total Items: 88
Upper Tertiary high-level plutons of the Smeaton Bay area, southeastern Alaska Upper Tertiary high-level plutons of the Smeaton Bay area, southeastern Alaska
No abstract available.
Authors
Raymond L. Elliott, James G. Smith, Travis Hudson
The Alaskan Mineral Resource Assessment Program: Background information to accompany folio of geologic and mineral resource maps of the Tanacross quadrangle, Alaska The Alaskan Mineral Resource Assessment Program: Background information to accompany folio of geologic and mineral resource maps of the Tanacross quadrangle, Alaska
The Tanacross quadrangle, consisting of 17,400 km 2 (6,700 mi 2) in east-central Alaska, was investigated by an interdisciplinary research team for the purpose of assessing the mineral resource potential of the quadrangle. This report provides the background information for a folio of maps on the geology, geophysics, reconnaissance geochemistry, Landsat imagery, and mineral resource...
Authors
Helen Laura Foster, N. R. D. Albert, D.F. Barnes, G.C. Curtin, Andrew Griscom, D.A. Singer, James G. Smith
Map showing potassium-argon ages from the Goodnews quadrangle, Alaska Map showing potassium-argon ages from the Goodnews quadrangle, Alaska
No abstract available.
Authors
Frederic H. Wilson, James G. Smith
Analyses of rock and stream-sediment samples from the Ketchikan Quadrangle, southeastern Alaska Analyses of rock and stream-sediment samples from the Ketchikan Quadrangle, southeastern Alaska
No abstract available.
Authors
Richard D. Koch, Raymond L. Elliott, H. C. Berg, James G. Smith
Use of machine-processable field notes in a wilderness mapping project (Granite Fiords area), southeastern Alaska Use of machine-processable field notes in a wilderness mapping project (Granite Fiords area), southeastern Alaska
For reconnaissance geologic mapping and mineral resource evaluation of the Granite Fiords wilderness study area, we developed and used a system of machine-processable field notes. Preprinted field forms standardize notes and serve as checklists that insure collection of all available data. The use of this system cut in half the time required to record data at an outcrop. The system...
Authors
Henry C. Berg, James G. Smith
Geologic map of the McCarthy B-4 quadrangle, Alaska Geologic map of the McCarthy B-4 quadrangle, Alaska
No abstract available.
Authors
E. M. MacKevett, James G. Smith
Geologic map of the McCarthy B-6 quadrangle, Alaska Geologic map of the McCarthy B-6 quadrangle, Alaska
No abstract available.
Authors
E. M. MacKevett, James G. Smith
Mesozoic granitic rocks in northwestern Nevada: A link between the Sierra Nevada and Idaho batholiths Mesozoic granitic rocks in northwestern Nevada: A link between the Sierra Nevada and Idaho batholiths
Extensive areas in northwestern Nevada are underlain by granodiorite and quartz monzonite plutons, as well as less common smaller bodies of quartz diorite. Twenty-six K/Ar age determinations on rocks from this suite range from about 175 to 85 m.y., but most of the plutons are between 105 and 85 m.y. old. This Late Cretaceous intrusive epoch extending from 105 to 85 m.y. ago is here named...
Authors
James G. Smith, Edwin H. McKee, Donald Bruce Tatlock, Richard F. Marvin
Mineral resources of Glacier Bay National Monument, Alaska Mineral resources of Glacier Bay National Monument, Alaska
No abstract available.
Authors
E.M. MacKevett, D. A. Brew, C. C. Hawley, L.C. Huff, James G. Smith
Geochemical reconnaissance of the McCarthy B-6 quadrangle, Alaska Geochemical reconnaissance of the McCarthy B-6 quadrangle, Alaska
No abstract available.
Authors
Gary R. Winkler, E.M. MacKevett, James G. Smith
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 88
Upper Tertiary high-level plutons of the Smeaton Bay area, southeastern Alaska Upper Tertiary high-level plutons of the Smeaton Bay area, southeastern Alaska
No abstract available.
Authors
Raymond L. Elliott, James G. Smith, Travis Hudson
The Alaskan Mineral Resource Assessment Program: Background information to accompany folio of geologic and mineral resource maps of the Tanacross quadrangle, Alaska The Alaskan Mineral Resource Assessment Program: Background information to accompany folio of geologic and mineral resource maps of the Tanacross quadrangle, Alaska
The Tanacross quadrangle, consisting of 17,400 km 2 (6,700 mi 2) in east-central Alaska, was investigated by an interdisciplinary research team for the purpose of assessing the mineral resource potential of the quadrangle. This report provides the background information for a folio of maps on the geology, geophysics, reconnaissance geochemistry, Landsat imagery, and mineral resource...
Authors
Helen Laura Foster, N. R. D. Albert, D.F. Barnes, G.C. Curtin, Andrew Griscom, D.A. Singer, James G. Smith
Map showing potassium-argon ages from the Goodnews quadrangle, Alaska Map showing potassium-argon ages from the Goodnews quadrangle, Alaska
No abstract available.
Authors
Frederic H. Wilson, James G. Smith
Analyses of rock and stream-sediment samples from the Ketchikan Quadrangle, southeastern Alaska Analyses of rock and stream-sediment samples from the Ketchikan Quadrangle, southeastern Alaska
No abstract available.
Authors
Richard D. Koch, Raymond L. Elliott, H. C. Berg, James G. Smith
Use of machine-processable field notes in a wilderness mapping project (Granite Fiords area), southeastern Alaska Use of machine-processable field notes in a wilderness mapping project (Granite Fiords area), southeastern Alaska
For reconnaissance geologic mapping and mineral resource evaluation of the Granite Fiords wilderness study area, we developed and used a system of machine-processable field notes. Preprinted field forms standardize notes and serve as checklists that insure collection of all available data. The use of this system cut in half the time required to record data at an outcrop. The system...
Authors
Henry C. Berg, James G. Smith
Geologic map of the McCarthy B-4 quadrangle, Alaska Geologic map of the McCarthy B-4 quadrangle, Alaska
No abstract available.
Authors
E. M. MacKevett, James G. Smith
Geologic map of the McCarthy B-6 quadrangle, Alaska Geologic map of the McCarthy B-6 quadrangle, Alaska
No abstract available.
Authors
E. M. MacKevett, James G. Smith
Mesozoic granitic rocks in northwestern Nevada: A link between the Sierra Nevada and Idaho batholiths Mesozoic granitic rocks in northwestern Nevada: A link between the Sierra Nevada and Idaho batholiths
Extensive areas in northwestern Nevada are underlain by granodiorite and quartz monzonite plutons, as well as less common smaller bodies of quartz diorite. Twenty-six K/Ar age determinations on rocks from this suite range from about 175 to 85 m.y., but most of the plutons are between 105 and 85 m.y. old. This Late Cretaceous intrusive epoch extending from 105 to 85 m.y. ago is here named...
Authors
James G. Smith, Edwin H. McKee, Donald Bruce Tatlock, Richard F. Marvin
Mineral resources of Glacier Bay National Monument, Alaska Mineral resources of Glacier Bay National Monument, Alaska
No abstract available.
Authors
E.M. MacKevett, D. A. Brew, C. C. Hawley, L.C. Huff, James G. Smith
Geochemical reconnaissance of the McCarthy B-6 quadrangle, Alaska Geochemical reconnaissance of the McCarthy B-6 quadrangle, Alaska
No abstract available.
Authors
Gary R. Winkler, E.M. MacKevett, James G. Smith
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.