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Compositional Diversity in Arcs: A R...

Martinez Ardila, Ana Maria.

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Compositional Diversity in Arcs: A Record of Magmatic Processes in the Peru Coastal Batholith, Ica.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Compositional Diversity in Arcs: A Record of Magmatic Processes in the Peru Coastal Batholith, Ica./
作者:	Martinez Ardila, Ana Maria.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2016,
面頁冊數:	427 p.
附註:	Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.
Contained By:	Dissertation Abstracts International78-09B(E).
標題:	Geochemistry. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10195111
ISBN:	9781369695823

Compositional Diversity in Arcs: A Record of Magmatic Processes in the Peru Coastal Batholith, Ica.
Martinez Ardila, Ana Maria.

Compositional Diversity in Arcs: A Record of Magmatic Processes in the Peru Coastal Batholith, Ica. - Ann Arbor : ProQuest Dissertations & Theses, 2016 - 427 p.

Source: Dissertation Abstracts International, Volume: 78-09(E), Section: B.

Thesis (Ph.D.)--Loma Linda University, 2016.

This item is not available from ProQuest Dissertations & Theses.

Peruvian granitic plutons display evidence for crustal recycling and magma mixing. Evidence of physical and chemical processes operating during the formation of the Ica-Pisco complexes involves magma mixing and mingling as result of felsic and mafic interactions. Evidence of crustal recycling was identified from kilometer-scale cauldron subsidence, meter and centimeter-scale-stoping, and disaggregation. At the petrographic microscope scale, evidence for recycling and mixing between mantle and crustal magma during crystallization is found from disequilibrium features such as reaction rims, resorbed cores, and patchy zoning. Elemental and isotope geochemistry data indicate that mantle magmas have incorporated continental crust material from varying depths and sources and in increasing amounts with time. Some uranium and lead isotope single-crystal zircon analyses also indicate varying source components. The research concluded that the source of the granitic magmas making up the plutons near Ica, Peru is about half from the mantle and half from recycled crust made up of Precambrian lower crust and Phanerozoic upper crust consisting of volcanic, sedimentary, and earlier plutonic units at the emplacement level.

ISBN: 9781369695823Subjects--Topical Terms:

539092
Geochemistry.

Compositional Diversity in Arcs: A Record of Magmatic Processes in the Peru Coastal Batholith, Ica.
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