Geochemistry of Boninites and Other Low TiO2 Island Arc Volcanic Rocks
Author: Rosemary Louise Hickey
Publisher:
Published: 1983
Total Pages: 630
ISBN-13:
DOWNLOAD EBOOKRead and Download eBook Full
Author: Rosemary Louise Hickey
Publisher:
Published: 1983
Total Pages: 630
ISBN-13:
DOWNLOAD EBOOKAuthor: Rosemary Louise Hickey
Publisher:
Published: 1984
Total Pages: 640
ISBN-13:
DOWNLOAD EBOOKAuthor: Anthony J. Crawford
Publisher: Taylor & Francis
Published: 1989
Total Pages: 465
ISBN-13: 9780044450030
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1977
Total Pages:
ISBN-13:
DOWNLOAD EBOOKAn Eocene submarine boninite series volcanic center isexposed on the island of Chichi-jima, Bonin Islands, Japan. Five rocktypes, boninite, bronzite andesite, dacite, quartz dacite, and rhyolite, were distinguished within the boninite volcanic sequence on the basis ofpetrographic and geochemical observations. Boninite lavas contain highmagnesium, nickel, and chromium contentsindicative of primitive melts, but have high silica contents relative to other mantle-derived magmas. All boninite series lavas contain very low incompatible elementconcentrations, and concentrations of high-field strength elements inprimitive boninite lavas are less than half of those found in depletedmid-ocean ridge basalts. Abundances of large-ion lithophile elements arerelatively high in boninite series lavas, similar to the enrichmentsobserved in many island arc lavas. Trends for both major and traceelement data suggest that the more evolved lavas of the boninite magmaseries were derived primarily through high-level fractionalcrystallization of boninite. Textural features, such as resorption andglomeroporphyrocrysts, and reverse chemical zonations suggest that magmamixing contributed to the development of the quartz dacitelavas.
Author: Alfred Glenn Hochstaedter
Publisher:
Published: 1991
Total Pages: 358
ISBN-13:
DOWNLOAD EBOOKAuthor: Petr Jakeš
Publisher:
Published: 1970
Total Pages:
ISBN-13:
DOWNLOAD EBOOKAuthor: E. A. Du Bray
Publisher:
Published: 2004
Total Pages: 68
ISBN-13:
DOWNLOAD EBOOKAuthor: James Earl Wright
Publisher: Geological Society of America
Published: 2008-01-01
Total Pages: 582
ISBN-13: 0813724384
DOWNLOAD EBOOKWright (geology, U. of Georgia) and Shervais (geology, Utah State U.) edit selections from a symposium titled "Ophiolites, Batholiths, and Regional Geology: A Session in Honor of Cliff Hopson" held at the Cordilleran Section Meeting of The Geological Society of America in 2005. With contributions from geologists and earth scientists from throughout the United States, the title contains separate sections for papers on the topics of ophiolites, arcs, and batholiths. The publication is illustrated in both black-and-white and color, but contains no index.
Author:
Publisher:
Published: 1985
Total Pages: 166
ISBN-13:
DOWNLOAD EBOOKAuthor: A.L. Smith
Publisher: Geological Society of America
Published: 2013-11-07
Total Pages: 260
ISBN-13: 0813724961
DOWNLOAD EBOOK"Using results from geological mapping, detailed stratigraphy, mineral chemistry, and geochemistry, the authors have developed a model to explain characteristics of Dominica not seen on many island arcs worldwide. The model suggests that during the Pleistocene partial melting of the island-arc crust generated a single magma body of batholithic proportions beneath the island"--Provided by publisher.