U-Pb Zircon Geochronology and Trace Element Geochemistry of K-feldspar Megacrysts from the Tuolumne Intrusive Complex, California PDF Download
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Author: Melissa Chambers
Publisher:
ISBN:
Category :
Languages : en
Pages : 474
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Author: Melissa Chambers
Publisher:
ISBN:
Category :
Languages : en
Pages : 474
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Book Description
Author: Vali Memeti
Publisher: Geological Society of America
ISBN: 0813700345
Category : Science
Languages : en
Pages : 132
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Book Description
"This comprehensive field guide takes you on a six-day, west-to-east geologic journey across the Mesozoic magmatic arc of the central Sierra Nevada in California. It summarizes field, structural, geochemistry, and geochronology data collected on individual intrusions, basement terranes intruded by these intrusions, Mesozoic volcanic-sedimentary sections, and from several Sierra Nevada-wide datasets"--Provided by publisher.
Author: John M. Hanchar
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 1501509322
Category : Science
Languages : en
Pages : 520
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Book Description
Volume 53 of Reviews in Mineralogy and Geochemistry covers the most important aspects of zircon-related research over the past twenty-years and highlight possible future research avenues. The chapters review the structure of zircon and other mineral (and synthetic) phases with the zircon structure; the minor and trace element compositions of igneous, metamorphic and hydrothermal zircons; the study of melt inclusions in zircon; experimental and natural studies of zircon saturation and the use of zircon saturation thermometry for natural rocks; cation diffusion and oxygen diffusion in zircon; the historical development of zircon geochronology from the mid-1950s to the present; ID-TIMS, SIMS and ICP-MS; the application of zircon chronology in constraining sediment provenance and the calibration ofthe geologic time-scale; other isotopic systematics; the spectroscopy of zircon, both crystalline and metamict and an atlas of internal textures of zircon.
Author: Walter Rowland Wilde
Publisher:
ISBN:
Category :
Languages : en
Pages : 248
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Book Description
Author: David Bruce Sams
Publisher:
ISBN:
Category : Crystalline rocks
Languages : en
Pages : 630
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Book Description
Author: Paul C. Bateman
Publisher:
ISBN:
Category : Batholiths
Languages : en
Pages : 218
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Book Description
A study of the structure, composition, and pre-Tertiary history of the Sierra Nevada batholith in the Mariposa 1 by 2 quadrangle.
Author: Juliana Troch
Publisher:
ISBN:
Category : Rhyolite
Languages : en
Pages : 17
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Book Description
The Island Park-Mount Jackson series in the Yellowstone volcanic field, Wyoming (USA), is a suite of rhyolitic domes and lavas that erupted between the caldera-forming eruptions of the Mesa Fall Tuff (1.3 Ma) and the Lava Creek Tuff (0.6 Ma). Combined zircon U/Pb geochronology, Raman spectroscopy, oxygen isotopic and trace elemental compositions document storage conditions of these magmas between consecutive supereruptions. Based on comparison with co-erupted melt com-positions and textural criteria, four zircon compositional groups are identifed that record different stages along a continuous magmatic evolution from trace element-poor rhyolite at high temperatures to extremely fractionated rhyolite where zircon trace elements are highly enriched (e.g., > 1000 ppm U). These latter zircon domains are dark in cathodoluminescence images and show broadened Raman peaks relative to near-endmember zircon, indicating that substitution of non-stoichiometric trace elements into zircon leads to distortion of the crystal lattice. Some of these zircon domains contain inclusions of U-Th-REE-phases, likely originating from coupled dissolution-reprecipitation of metastable trace element-rich zircon in the presence of a fluid phase. Rhyolite-MELTS simulations indicate that at the conditions required to produce the observed enrichment in trace elements, a fluid phase is likely present. These findings illustrate that zircons can be assembled from a variety of co-existing magmatic environments in the same magma reservoir, including near-solidus volatile-rich melts close to the magmatic-hydrothermal transition.
Author: Jean Louis Vigneresse
Publisher: Geological Society of London
ISBN: 9781862390584
Category : Nature
Languages : en
Pages : 296
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Author: Wayne R. Premo
Publisher:
ISBN:
Category :
Languages : en
Pages : 212
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Book Description
Author: D. R. Nelson
Publisher:
ISBN: 9780730965039
Category : Geochronometry
Languages : en
Pages : 244
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Book Description
