Výsledky vyhledávání - "Allen F. Glazner"

Akademický článek

Thermal Constraints on the Longevity, Depth, and Vertical Extent of Magmatic Systems

Autor: Allen F. Glazner

Publikováno v: Geochemistry, Geophysics, Geosystems, Vol 22, Iss 4, Pp n/a-n/a (2021)

Abstract Magmatic regions are typically viewed as vertical systems, with magma coming in the bottom and either freezing in the crust to form plutons or erupting to form volcanic rocks. Maintaining an upper‐crustal magmatic system for 105–106 Ma t

Externí odkaz: https://doaj.org/article/758a99db80574ce1a93b3327503eabdc

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Akademický článek

Identifying Metasomatized Continental Lithospheric Mantle Involvement in Cenozoic Magmatism From Ta/Th Values, Southwestern North America

Autor: G. Lang Farmer, Diane E. Fritz, Allen F. Glazner

Publikováno v: Geochemistry, Geophysics, Geosystems, Vol 21, Iss 5, Pp n/a-n/a (2020)

Abstract The accessory minerals rutile and apatite are rare or absent in the convecting upper mantle but occur in shallow, cooler, metasomatized continental lithospheric mantle (CLM) where they serve as carrier phases for the trace elements Ta (in ru

Externí odkaz: https://doaj.org/article/508c5050ac9d4b5c8ec6fd8890c11219

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Akademický článek

The Granite Aqueduct and Autometamorphism of Plutons

Autor: John M. Bartley, Allen F. Glazner, Michael A. Stearns, Drew S. Coleman

Publikováno v: Geosciences, Vol 10, Iss 4, p 136 (2020)

Ian Carmichael wrote of an “andesite aqueduct” that conveys vast amounts of water from the magma source region of a subduction zone to the Earth’s surface. Diverse observations indicate that subduction zone magmas contain 5 wt % or more H2O. Mo

Externí odkaz: https://doaj.org/article/7e37e06537644689842560c3c75ece5d

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Akademický článek

Climate and the Development of Magma Chambers

Autor: Allen F. Glazner

Publikováno v: Geosciences, Vol 10, Iss 3, p 93 (2020)

Whether magma accumulating in the crust develops into a persistent, eruptible magma body or an incrementally emplaced pluton depends on the energy balance between heat delivered to the bottom in the form of magma and heat lost out the top. The rate o

Externí odkaz: https://doaj.org/article/202048778ec94c9fab44dc153f53d1d4

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Cenozoic magmatism and plate tectonics in western North America: Have we got it wrong?

Autor: Allen F. Glazner

The current tectonic framework for understanding Cenozoic magmatism in western North America was laid out in a series of influential papers in the early days of the plate-tectonics revolution. These ideas, largely developed through deductive analysis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1a5d1d332de3f989155125034030c80d
https://doi.org/10.1130/2021.2553(09)

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Immiscibility and the origin of ladder structures, mafic layering, and schlieren in plutons

Autor: John M. Bartley, Bryan S. Law, Allen F. Glazner

Publikováno v: Geology. 49:86-90

Granitic plutons worldwide contain ladder structures (LSs) that consist of nested trough-shaped layers alternating between mafic and felsic compositions. LSs and other forms of modal layering have been attributed to crystal accumulation, but their ch

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aba61119883b5c24860b39bffbcbd367
https://doi.org/10.1130/g47634.1

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