Petrography and petrology of the Middlefield Granite
Russell Gould Clark Jr.
1968, Open-File Report 68-36
Metallic mineral resources map of nine Alaska quadrangles: Holy Cross, Kotzebue, Melozitna, Norton Bay, Nulato, Prince Rupert, Survey Pass, Taku River, Unalakleet
1968, Open-File Report 68-60
No abstract available....
Metallic mineral resources map of the Craig Quadrangle, Alaska
1968, Open-File Report 68-42
No abstract available. ...
Metallic mineral resources map of the Teller quadrangle, Alaska
Edward Huntington Cobb, C.L. Sainsbury
1968, Open-File Report 68-61
Metallic mineral resources map of the Ambler River Quadrangle, Alaska
1968, Open-File Report 68-39
No abstract available. ...
Metallic mineral resources map of the Bradfield Canal Quadrangle, Alaska
1968, Open-File Report 68-41
No abstract available. ...
Silent Canyon volcanic center, Nye County, Nevada
Donald C. Noble, K. A. Sargent, H. H. Mehnert, E. B. Ekren, F.M. Byers Jr.
1968, Open-File Report 68-343
Analysis of multisensor data, autometric operation
Raytheon Co.
1968, Open-File Report 69-214
Metallic mineral resources map of the Nome Quadrangle, Alaska
1968, Open-File Report 68-51
No abstract available. ...
Reconnaissance geology, mineral occurrences, and geochemical anomalies of the Yentna district, Alaska
Allen L. Clark, C. C. Hawley
1968, Open-File Report 68-35
The Yentna district, in south-central Alaska, is underlain by slightly metamorphosed Mesozoic sedimentary rocks, and by sandstones, conglomerates and coaly minerals of the Tertiary Kenai Formation. The bedrock is locally covered by extensive surficial deposits of Quaternary and Recent (Holocene) age. The Mesozoic strata are cut by a quartz monzonite...
Geology of the Gore Canyon-Kremmling area, Grand County, Colorado
C.S. Venable Barclay
1968, Open-File Report 68-3
The Gore Canyon-Kremmling area is in the southwestern portion of the Kremmling 15-minute quadrangle, Colorado. Precambrian rocks are biotite gneiss, the Boulder Creek Granodiorite, granophyre dikes, and quartz veins. The Boulder Creek intrudes the biotite gneiss, and both of these units are cut by north-northwest-trending granophyre dikes and quartz veins....
Metallic mineral resources map of the Ophir quadrangle, Alaska
Edward Huntington Cobb
1968, Open-File Report 68-52
Metallic mineral resources map of the Petersburg quadrangle, Alaska
1968, Open-File Report 68-53
No abstract available. ...
Metallic mineral resources map of the Port Alexander quadrangle, Alaska
1968, Open-File Report 68-54
No abstract available. ...
Metallic mineral resources map of the Sumdum Quadrangle, Alaska
1968, Open-File Report 68-59
No abstract available. ...
Metallic mineral resources map of the Ruby Quadrangle, Alaska
1968, Open-File Report 68-55
No abstract available. ...
Dispersive multispectral scanning; a feasibility study
J. Braithwaite
1968, Open-File Report 68-19
Optical-mechanical line scanners can be used from aircraft and satellites to obtain strip maps of the surface over which the vehicle passes. The feasibility of combining wavelength dispersing techniques with such scanning techniques has been studied. This combination makes it possible to obtain spectral and spatial information simultaneously. Appropriate data...
Metallic mineral resources map of the Shungnak Quadrangle, Alaska
1968, Open-File Report 68-56
No abstract available. ...
Metallic mineral resources map of the Sitka Quadrangle, Alaska
1968, Open-File Report 68-57
No abstract available. ...
Metallic mineral resources map of the Baird Mountains quadrangle, Alaska
Edward Huntington Cobb
1968, Open-File Report 68-40
Metallic mineral resources map of the Skagway Quadrangle, Alaska
1968, Open-File Report 68-58
No abstract available. ...
Timber Mountain Tuff, southern Nevada, and its relation to cauldron subsidence
F.M. Byers Jr., P. P. Orkild, W. J. Carr, W. D. Quinlivan
1968, Open-File Report 68-30
Application of dislocation theory to analysis of vertical displacements at the ground surface caused by the Duryea event
G.E. Brethauer
1968, Open-File Report 68-20
Dislocation theory is used in an analysis that explains measured vertical displacements across a fault near the Duryea underground nuclear explosion. The difference between the measured vertical displacement and the theoretically predicted vertical displacement caused by cavity formation is termed the residual vertical displacement. The residual vertical displacement is, therefore,...
Metallic mineral resources map of the Hughes Quadrangle, Alaska
1968, Open-File Report 68-44
No abstract available. ...
Metallic mineral resources map of the Mount Fairweather Quadrangle, Alaska
1968, Open-File Report 68-50
No abstract available. ...