Skip navigation
Please use this identifier to cite or link to this item:
Title: The Implications of Mafic Enclaves on Magmatic Differentiation and Pluton Emplacement: Geochronological and Geochemical Insights from the Bergell Intrusion, N. Italy
Authors: Gronewold, Jeffrey
Advisors: Schoene, Blair
Department: Geosciences
Class Year: 2013
Abstract: Mafic enclaves from the Bergell Intrusion, N. Italy are analyzed with a critical lens in order to better understand magmatic differentiation and pluton emplacement. Magmatic processes involved in pluton generation remain contested even after over a century of ongoing debate centered on the development of continental crusts. This study attempted to characterize the role of magma mixing in the creation of granitoid plutons through mafic enclaves, which are mesoscale inclusions of a more mafic member commonly found in plutons. U-Pb thermal ionization mass spectrometry (TIMS) was coupled with trace elemental analysis and laser ablation inductively coupled mass spectrometry (LA-ICPMS) techniques to generate a comprehensive data set. Geochronologic U-Pb ages were used to deduce a general model for enclave generation and behavior in the Bergell Intrusion, and when linked with the trace element chemistry was able further describe and date mixing events. Due to the mechanisms involved with the quenching and crystallization of enclaves, the ages of enclaves from U-Pb TIMS were by and large contemporaneous with their host rock, and thus provide an additional temporal and chemical constraint on pluton emplacement.
Extent: 66 pages
Access Restrictions: Walk-in Access. This thesis can only be viewed on computer terminals at the Mudd Manuscript Library.
Type of Material: Princeton University Senior Theses
Language: en_US
Appears in Collections:Geosciences, 1929-2016

Files in This Item:
File SizeFormat 
Gronewold Thesis.pdf2.88 MBAdobe PDF    Request a copy

Items in Dataspace are protected by copyright, with all rights reserved, unless otherwise indicated.