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Chittenden, California, earthquake of September 14, 1963
No abstract available.
Brabb, E.E. Flow direction in triclinic folded rocks
No abstract available.
Howard, Keith A. Isotopic age of the Nevadan Orogeny and older Plutonic and metamorphic events in the Klamath Mountains, California
Several metamorphic and plutonic events have been recognized in the Klamath Mountains utilizing potassium-argon and rubidium-strontium mineral and whole-rock ages. The oldest known metamorphic event in the region produced the Abrams Mica Schist and the co-extensive Salmon Hornblende Schist. Strontium evolution diagrams indicate that the age of...
Lanphere, Marvin A.; Irwin, William P.; Hotz, Preston E. Shatter cones at Sierra Madera, Texas
Shatter cones abound in the central uplift of Sierra Madera and they occur as far as 6.5 kilometers from the center. Apical angles average near 90 degrees. Whole cones and full cones represented by diversely oriented cone segments in any structural block show relatively uniform orientations of axes and a dominant direction of point. The cones...
Howard, Keith A.; Offield, Terry W.
Chapter C in Geological Survey research 1967
Low-grade metamorphic rocks of the blueschist facies grade upward to the sole of a great thrust fault along the eastern margin of the Coast Ranges in northern California and southwestern Oregon. The gradation is defined by three textural zones of increasing reconstitution in metagraywacke, and by two metamorphic mineral zones, lawsonite and...
AA
Historic surface faulting in continental United States and adjacent parts of Mexico
This report summarizes geometric aspects of approximately 35 instances of historic faulting of the ground surface in the continental United States and adjacent parts of Mexico. This information is of immediate importance in the selection and evaluation of sites for vital structures such as nuclear power plants. The data are presented in a table...
Bonilla, M.G. Devonian rocks of the Yukon-Porcupine Rivers area and their tectonic relation to other Devonian sequences in Alaska
Devonian rocks along the Yukon River near the Alaska-Yukon boundary comprise 250 feet of limestone and shale and 800 feet of chert and siliceous shale, all referred to the McCann Hill Chert of Early to Late Devonian age; about 3,000 feet of non-marine chert-pebble conglomerate, graywacke, and shale of the Nation River Formation (Late Devonian);...
Churkin, Michael; Brabb, Earl E. Geologic evaluation of aerial radar photographs of southwestern Oregon
No abstract available.
Irwin, William P. Geology of the Klamath Mountains province
No abstract available.
Bailey, E.H. San Andreas Fault from San Francisco to Hollister
No abstract available.
Brabb, E.E.; Maddock, M.; Wallace, R.E.
Geological Survey research 1965, Chapter D
Scientific notes and summaries of investigations by members of the Conservation, Geologic, and Water Resources Divisions tn geology, hydrology, and related fields.