Download or read book Petrology and Structure of a Gabbroic Body in the Trinity Ultramafic Pluton Klamath Mountains California written by Lee H. Goullaud and published by . This book was released on 1973 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Structure and Petrology of the Forest Mountain Ultramafic Body Klamath Mountains California written by Maria Anita Terres and published by . This book was released on 1979 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structure Stratigraphy Petrology and Regional Relationships of the Trinity Ophiolite Eastern Klamath Mountains California written by Nancy Lindsley-Griffin and published by . This book was released on 1982 with total page 916 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book California Geology written by and published by . This book was released on 1978 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Paleozoic Paleogeography of the Western United States II written by Calvin H. Stevens and published by . This book was released on 1991 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Northwest Geology written by and published by . This book was released on 1977 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Index to Graduate Theses and Dissertations on California Geology 1973 1989 written by and published by . This book was released on 1978 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Geology and Structural Petrology of Ultramafic and Associated Rocks in the Northeast Marble Mountain Wilderness Klamath Mountains Northern California written by John Mark Chambers and published by . This book was released on 1983 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Part I Petrology and Petrogenesis of the Trinity Peridotite Northern California written by James E. Quick and published by . This book was released on 1981 with total page 996 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography and Index of Geology written by and published by . This book was released on 1988 with total page 1152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Petrology and Metamorphism of Ultramafic and Mafic Rocks Near Pulga Butte County California written by Seyed Ahmad Mazaheri and published by . This book was released on 1982 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Mineralogy Petrology Geochemistry and Petrogenesis of the Mountain Poser Gabbroic Pluton Southern California miccroform written by Cary F. R. Wheeler and published by National Library of Canada. This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Geotitles written by and published by . This book was released on 1990 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Intrusive Relations and Petrography of the Slinkard Pluton Central Klamath Mountains California written by Charlotte Mary Allen and published by . This book was released on 1981 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Petrography Geochemistry and Structure of the Corte Madera Gabbro Pluton San Diego County California written by Paul Gordon Lillis and published by . This book was released on 1978 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Corte Madera Gabbro pluton lies within the Peninsular Ranges batholith approximately 50 km east of San Diego, California. The gabbro intruded into metamorphosed pelitic rocks and was, in turn, intruded by more silicic plutons. The gabbroic rocks have been divided into three groups based on structural, textural, and mineralogical parameters. The A group consists of hornblende leucogabbro, troctolite, olivine gabbronorite, pyroxene-hornblende gabbronorite, minor anorthosite, and an occurrence of clinopyroxenite. The B group consists of orthopyroxene hornblende gabbronorite and hornblende gabbro, and the C group consists primarily of biotite-quartz norite. The A group contains cumulate textures, mineral layering, and synplutonic faults, and forms a basinal structure which is tilted to the southwest. The B group forms a cryptically zoned lobe with steeply dipping foliation. The C group forms a fairly homogeneous mantle around the A group and contains inclusions of prebatholithic rocks. The pluton is generally high in Al2O3, and low in K2O, TiO2, and total alkalis. The geochemistry of the major trace elements emphasizes the differences between the three groups. The C group is consistently richer in SiO2, total alkalis, P2O5, Rb, Sr, Y, Ba, Zr, and Nb. Based on various differentiation indices, the A group is least fractionated and the C group is most fractionated. The A and B groups show a continuous iron-enrichment trend, whereas the C group shows no consistent trend. The jump in concentration of many elements between the B and C groups cannot be explained by simple fractionation models. The parent magma for the pluton was a hydrous high-alumina basalt with island-arc affinities. The magma rose from a Jurassic Benioff zone to an intermediate crustal level (total pressure greater than 5 kb) where clinopyroxene began to crystallize. The magma continued upward in a series of pulses to the present erosional level (2 kb). Blocks of country rock sank into and contaminated the first pulse of magma. The contaminated magma became fairly homogeneous and crystallized in place to form the C group rocks. A second pulse of magma intruded the C group rocks and plagioclase and olivine began to crystallize to form the A group rocks. Differential heat loss caused intermittent convective overturn producing a rhythmic layering and other sedimentary structures. Tectonic events triggered slumping and faulting of the unconsolidated rhythmic layers. A portion of the melt became isolated in a side chamber or old conduit zone and differentiated in-situ as the B group

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 The Structure and Petrology of the Gabbro Unit and the Mafic ultramafic Contact Table Mountain Bay of Islands Complex Newfoundland microform written by Nancy Eileen Moll and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1981 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: