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A Multi-Method Study of Metamorphism...

Scudder, Susan Marie.

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A Multi-Method Study of Metamorphism and Fluid Flow During Contact Metamorphism of the May Lake Interpluton Screen, Yosemite National Park, California.

Record Type:	Electronic resources : Monograph/item
Title/Author:	A Multi-Method Study of Metamorphism and Fluid Flow During Contact Metamorphism of the May Lake Interpluton Screen, Yosemite National Park, California./
Author:	Scudder, Susan Marie.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2017,
Description:	124 p.
Notes:	Source: Masters Abstracts International, Volume: 57-01.
Contained By:	Masters Abstracts International57-01(E).
Subject:	Geochemistry. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10624355
ISBN:	9780355350197

A Multi-Method Study of Metamorphism and Fluid Flow During Contact Metamorphism of the May Lake Interpluton Screen, Yosemite National Park, California.
Scudder, Susan Marie.

A Multi-Method Study of Metamorphism and Fluid Flow During Contact Metamorphism of the May Lake Interpluton Screen, Yosemite National Park, California. - Ann Arbor : ProQuest Dissertations & Theses, 2017 - 124 p.

Source: Masters Abstracts International, Volume: 57-01.

Thesis (M.S.)--San Jose State University, 2017.

The May Lake interpluton screen is a 4 km long, &sim;0.5 km wide swath of metamorphic rock cropping out between plutons of the &sim;103 Ma Yosemite Valley Intrusive Suite and the &sim;93-85 Ma Tuolumne Intrusive Suite in Yosemite National Park, California. Metasomatic alteration and recrystallization due to contact metamorphism and fluid infiltration resulted from the emplacement of the Cretaceous plutons. Mineral assemblages are consistent with metamorphism to hornblende-hornfels and amphibolite facies. The presence of sillimanite-bearing metapelite and more Mg-rich clinopyroxene in calc-silicate assemblages of the northeast section of the screen than the southwest suggest higher grade metamorphism was experienced to the northeast. Pseudosection diagrams created from whole rock chemical analyses of three metapelite rocks also indicate higher temperatures in the northeastern section of the screen with minimum temperatures estimated from &sim;540-617°C. Based on petrographic analysis of andalusite- and sillimanite-bearing metapelite, it is likely that the screen experienced two stages of contact metamorphism: relatively lower temperature metamorphism during intrusion of the Yosemite Valley Intrusive Suite followed by relatively higher temperature contact metamorphism during intrusion of the more mafic Tuolumne Intrusive Suite. Stable isotope data suggest that rock permeability and preexisting structures were the strongest factors controlling fluid infiltration through the contact aureole.

ISBN: 9780355350197Subjects--Topical Terms:

539092
Geochemistry.

A Multi-Method Study of Metamorphism and Fluid Flow During Contact Metamorphism of the May Lake Interpluton Screen, Yosemite National Park, California.
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