Download or read book Geology and Geochemistry of the Craggy Peak Pluton Deadman Peak Pluton and the Billy s Peak Mafic Complex Klamath Mountains California written by Scott W. Petersen and published by . This book was released on 1993 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dissertation Abstracts International written by and published by . This book was released on 1994 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1993 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Petrology and Geochemistry of the Russian Peak Pluton Klamath Mountains Northern California written by Spencer Jerome Cotkin and published by . This book was released on 1987 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Petrology Mineralogy and Geochemistry of the Lower Coon Mountain Pluton Northern California with Respect of the Distribution of Platinum group Elements written by Norman J. Page and published by . This book was released on 1993 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Petrology of the Boundary Peak Adamellite Pluton written by Dahl Le Roy Harris and published by . This book was released on 1967 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Geology and Petrology of the Shelly Lake Pluton Central Klamath Mountains California written by Michael John Dorais and published by . This book was released on 1983 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Geochemistry and Petrology of the Morgan Creek Pluton Inyo County California written by Edward Joseph Cray and published by . This book was released on 1981 with total page 966 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kaweah Peaks Pluton and its Relationship to the Age of the Kern Canyon Fault Tulare County California written by John L. Burnett and published by . This book was released on 1976 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Petrology Mineralogy and Geochemistry of the Lower Coon Mountain Pluton Northern California with Respect of the Distribution of Platinum group Elements written by Norman J. Page and published by . This book was released on 1993 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geology Petrology Geochemistry and Isotopic Character of the Indian Hill Pluton Jacumba Mountains California written by Kent Elmont Parrish and published by . This book was released on 1991 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Indian Hill pluton is one of several peraluminous, garnetiferous plutons that occur in the eastern zone of the Peninsular Ranges batholith. It intruded a sillimanite-bearing migmatitic gneiss complex containing isolated bodies of quartzite, marble and amphibolite. The pluton consists of two facies: a medium-grained, garnet-muscovite-biotite granodiorite; and a younger, less abundant, fine-grained, muscovite-biotite grano-diorite. Pegmatitic pods are not developed in either facies. The emplacement of the pluton was preceded by the injection of phaneritic to pegmatitic leucocratic granodiorite dikes. The dikes are garnetiferous and of similar composition to the Indian Hill pluton. They occur exclusively within the metamorphic complex and are truncated by the plutonic units. Major element analyses indicate a limited Si02range (73%-76%) and A/CNK values from 1.14 to 1.20. Trace element compositions suggest a possible mixing relationship between the Indian Hill and La Posta magmas. The age difference, however, between the two plutons (89 Ma for Indian Hill and 94 Ma for La Posta) does not support mixing unless the cited La Posta age is not representative of that unit in the study area. Garnet-plagioclase-biotite-muscovite thermal and barometric calculations for the garnetiferous facies yield emplacement conditions of approximately 7 00°C and 2.5 ± 0.5 kb (7 to 10 km), respectively. Whole-rock oxygen isotopic ratios vary from 11.7 to 12.1 per mil with the quartz separates ranging from 12.6 to 13.2 per mil. Rubidium/strontium analyses of whole-rock and various mineral separates yield an initial 87Sr/ 86Sr ratio of 0.70628 ± 0.00025 and a regression age of 90 Ma ± 3 Ma. Zircon Pb/U analyses give a lower intercept age of 85 Ma ± 6 Ma and an upper intercept age of 1162 Ma ± 43 0 Ma. Based on the narrower range of the Rb/Sr age, the preferred emplacement age for the Indian Hill pluton is 89 Ma. The data indicate an origin by fractional melting and emplacement of three successive melts which underwent little in situ fractionation. The source region for the Indian Hill pluton consisted of a mixture of oceanic and continental crust. The data also infer that the continental source rocks either contained detrital zircon derived from a Precambrian source or consisted of a combination of Precambrian and Paleozoic rocks. The most likely heat source for fractional melting seems to be the large La Posta pluton which surrounds the metamorphic.

Download or read book Plutonic Rocks of the Klamath Mountains California and Oregon written by Preston Enslow Hotz and published by . This book was released on 1971 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geology Petrology and Geochemistry of the Viejas Mountain Gabbro Pluton San Diego County California written by Richard Jack Allinger and published by . This book was released on 1979 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Zonation in the Tilted Ashland Pluton Klamath Mountains California and Oregon written by Robert Francis Gribble and published by . This book was released on 1987 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geology of the Campbell Mountain Pluton Southern Fresno County California written by Kimberly Russell and published by . This book was released on 1982 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Petrology of the Heather Lake Pluton Klamath Mountains California written by David Alex Bero and published by . This book was released on 1980 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Petrology and Petrogenesis of the Cardinal Peak Pluton North Cascades Washington written by Laura A. Parent and published by . This book was released on 1999 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: