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Volume 86, Number 10
October, 1975
GSA Bulletin Cover Image for Volume 86, Issue 10
ISSN: 0016-7606
EISSN: 1943-2674
In this Issue
Early Mesozoic tectonic evolution of the western Sierra Nevada, California
RICHARD A. SCHWEICKERT; DARREL S. COWAN
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Metamorphic and deformational processes in the Franciscan Complex, California: Some insights from the Catalina Schist terrane
J. P. PLATT
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Aeromagnetic study of the Mid-Atlantic Ridge near the Oceanographer Fracture Zone
J. D. PHILLIPS; H. S. FLEMING; R. H. FEDEN; W. E. KING; R. K. PERRY
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Trace-element and organic carbon content of surface sediment from Grand Traverse Bay, Lake Michigan
ANITA BAKER-BLOCKER; EDWARD CALLENDER; PAUL D. JOSEPHSON
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Strain, fractures, and pressure solution in natural single-layer folds
R. H. GROSHONG, JR.
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Tomstown Dolomite (Lower Cambrian), central Appalachian Mountains, and the habitat of Salterella conulata
JUERGEN REINHARDT; EDWARD WALL
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Origin of andesite and dacite: Evidence of mixing at Glass Mountain in California and at other circum-Pacific volcanoes
JOHN C. EICHELBERGER
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Preferred position model and subsurface symmetry of valleys
ROBERT C. PALMQUIST
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Seismotectonics of the Cape Mendocino, California, area
G. W. SIMILA; W. A. PEPPIN; T. V. McEVILLY
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Late Cenozoic volcanism in the Aleutian Arc: Information from ash layers in the northeastern Gulf of Alaska
K. F. SCHEIDEGGER; L. D. KULM
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Gravity and Magnetic Investigation of the Twin Sisters Dunite, Northern Washington
GEORGE A. THOMPSON; RUSSELL ROBINSON
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Chemistry of ferromanganoan sediment of the Bauer Deep
FREDERICK L. SAYLES; T.-L. KU; PAUL C. BOWKER
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U-Pb age of zircon from Vernal Mesa-type quartz monzonite, Unaweep Canyon, west-central Colorado
M. E. BICKFORD; T. F. CUDZILO
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Incremental 40Ar/39Ar ages of biotite and hornblende from the northeastern Reading Prong: Their bearing on late Proterozoic thermal and tectonic history
R. D. DALLMEYER; J. F. SUTTER; D. J. BAKER
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Geochronology of Precambrian metamorphic rocks, north-central New Mexico
RANDALL L. GRESENS
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Petrology of the Older Series lavas from Mauritius, Indian Ocean
ALISTAIR N. BAXTER
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Topologically random channel networks in the presence of environmental controls
ATHOL D. ABRAHAMS
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K-Ar ages of some volcanic rocks from the Cook and Austral Islands
G. BRENT DALRYMPLE; R. D. JARRARD; D. A. CLAGUE
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Tectonic implications of new geochronologic data from the Limpopo belt at Pikwe, Botswana, southern Africa
MARTHA H. HICKMAN; JOHN WAKEFIELD
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Episodic exposure of inselbergs
C. R. TWIDALE; JENNIFER A. BOURNE
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Geology of coral terraces, Huon Peninsula, New Guinea: A study of Quaternary tectonic movements and sea-level changes: Discussion and reply: Discussion
W. T. WARD
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Evolution and global tectonics: Petrogenic view: Discussion and reply: Discussion
A.H.G. MITCHELL
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DISCUSSION AND REPLY

Geology of coral terraces, Huon Peninsula, New Guinea: A study of Quaternary tectonic movements and sea-level changes: Discussion and reply: Reply
J. CHAPPELL
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Evolution and global tectonics: Petrogenic view: Discussion and reply: Reply
ALBERT E. J. ENGEL; SONJA P. ITSON; CELESTE G. ENGEL; DALE M. STICKNEY; EDWARD J. CRAY, JR.
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  • Online ISSN 1943-2674
  • ISSN 0016-7606
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