Výsledky vyhledávání - "W. A. Bohrson"

Akademický článek

Changing Mantle Sources and the Effects of Crustal Passage on the Steens Basalt, SE Oregon: Chemical and Isotopic Constraints

Autor: N. E. Moore, A. L. Grunder, W. A. Bohrson, R. W. Carlson, I. N. Bindeman

Publikováno v: Geochemistry, Geophysics, Geosystems, Vol 21, Iss 8, Pp n/a-n/a (2020)

Abstract Continental flood basalts are more prone to compositional modification from passage through thicker and (or) more felsic crust in comparison to their oceanic counterparts. The Steens Basalt in southeast Oregon (~17 Ma) is among the oldest an

Externí odkaz: https://doaj.org/article/f3beb98500c343a8a9921ff5504d501b

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Thermodynamic limits for assimilation of silicate crust in primitive magmas

Autor: Jussi S. Heinonen, W. A. Bohrson, Frank J. Spera

Publikováno v: Geology. 50:81-85

Some geochemical models for basaltic and more primitive rocks suggest that their parental magmas have assimilated tens of weight percent of crustal silicate wall rock. But what are the thermodynamic limits for assimilation in primitive magmas? We pur

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0184134b135c019f343e84e6ff7fab39
https://doi.org/10.1130/g49139.1

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From Binary Mixing to Magma Chamber Simulator

Autor: Kieran Iles, Riikka Fred, Aku Heinonen, Ville Juhani Virtanen, Frank J. Spera, Jussi S. Heinonen, W. A. Bohrson

Publikováno v: Crustal Magmatic System Evolution

Magmas readily react with their surroundings, which may be other magmas or solid rocks. Such reactions are important in the chemical and physical evolution of magmatic systems and the crust, for example, in inducing volcanic eruptions and in the form

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::525550b493bf403efcb421233e7e26d7
https://doi.org/10.1002/9781119564485.ch7

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Hadean zircon formed due to hydrated ultramafic protocrust melting

Autor: Oleg Melnik, Anastassia Y. Borisova, Brigitte Stoll, Ilya N. Bindeman, Georges Ceuleneer, Anne Nédélec, Gleb S. Pokrovski, Oleg G. Safonov, Michael J. Toplis, Andrew Y. Bychkov, Klaus Peter Jochum, Andrey A. Gurenko, W. A. Bohrson, Nail R. Zagrtdenov, Ulrike Weis

Publikováno v: Geology
Geology, Geological Society of America, In press, ⟨10.1130/G49354.1⟩
Geology, In press, 50 (3), pp.300-304. ⟨10.1130/G49354.1⟩

Hadean zircons, from the Jack Hills (Western Australia) and other localities, are currently the only window into the earliest terrestrial felsic crust, the formation of which remains enigmatic. Based upon new experimental results, generation of such

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3c382287b66fc8614d07e69acb88988
https://hal.archives-ouvertes.fr/hal-03390431/document

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Serial interaction of primitive magmas with felsic and mafic crust recorded by gabbroic dikes from the Antarctic extension of the Karoo large igneous province

Autor: Arto V. Luttinen, Saku Vuori, Frank J. Spera, W. A. Bohrson, Jussi S. Heinonen

Publikováno v: Contributions to Mineralogy and Petrology. 176

Two subvertical gabbroic dikes with widths of ~ 350 m (East-Muren) and ≥ 500 m (West-Muren) crosscut continental flood basalts in the Antarctic extension of the ~ 180 Ma Karoo large igneous province (LIP) in Vestfjella, western Dronning Maud Land.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2bd79a4368035e8be7ece2d622a73caa
https://doi.org/10.1007/s00410-021-01777-6

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From Binary Mixing to Magma Chamber Simulator - Geochemical Modeling of Assimilation in Magmatic Systems

Autor: V. Virtanen, Aku Heinonen, Frank J. Spera, Jussi S. Heinonen, Kieran Iles, W. A. Bohrson, Riikka Fred

Magmas readily react with their surroundings, which may be other magmas or solid rocks. Such reactions are important in the chemical and physical evolution of magmatic systems and the crust, for ex...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1d4b57ce09b58762500104b419ac147e
https://doi.org/10.1002/essoar.10504606.2

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Diagnosing open-system magmatic processes using the Magma Chamber Simulator (MCS): part I—major elements and phase equilibria

Autor: Melissa A. Scruggs, Einari Suikkanen, Frank J. Spera, Guy A. Brown, Marie K. Takach, Garrett Zeff, W. A. Bohrson, Jussi S. Heinonen, Jenna V. Adams

Publikováno v: Contributions to Mineralogy and Petrology. 175

The Magma Chamber Simulator (MCS) is a thermodynamic tool for modeling the evolution of magmatic systems that are open with respect to assimilation of partial melts or stoped blocks, magma recharge + mixing, and fractional crystallization. MCS is ava

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7fbbd08c023a70b19fc1bb72aea57ea
https://doi.org/10.1007/s00410-020-01722-z

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