Research Mentor(s)
DeBari, Susan M., 1962-
Description
International Ocean Drilling Program (IODP) Expedition 350 drilled into the relatively unexplored rear arc of the Izu-Bonin-Mariana system (see map). It recovered 2000 meters of volcanic rock core in the spring of 2014. The core has been divided into seven lithostratigraphic units, from age 0 at the top to at least 13 million years at the bottom. I analyzed the major and trace element geochemistry of representative clinopyroxene and glass (in Unit I) and just clinopyroxene (in all other units) in volcaniclastic rocks throughout the core from top to bottom and used them as a proxy for interpreting magma compositional changes through time, which is connected to the development of medium-K2O, light-REE-enriched continental crust (as compared to low-K2O, light-REE-depleted oceanic crust).
Document Type
Event
Start Date
20-5-2016 12:00 PM
End Date
20-5-2016 3:00 PM
Department
Geology
Genre/Form
student projects; posters
Subjects – Topical (LCSH)
Volcanism--North Pacific Ocean; Geology, Structural--North Pacific Ocean
Geographic Coverage
Earth (Planet)--Crust
Type
Image
Keywords
Izu-Bonin, continential crust, Rare Earth Element, oceanic crust, Sm/La ratio, IODP
Rights
Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this documentation for commercial purposes, or for financial gain, shall not be allowed without the author's written permission.
Language
English
Format
application/pdf
Included in
Using clinopyroxene mineral chemistry to decipher magma composition changes over 13 million years in the Izu-Bonin volcanic arc
International Ocean Drilling Program (IODP) Expedition 350 drilled into the relatively unexplored rear arc of the Izu-Bonin-Mariana system (see map). It recovered 2000 meters of volcanic rock core in the spring of 2014. The core has been divided into seven lithostratigraphic units, from age 0 at the top to at least 13 million years at the bottom. I analyzed the major and trace element geochemistry of representative clinopyroxene and glass (in Unit I) and just clinopyroxene (in all other units) in volcaniclastic rocks throughout the core from top to bottom and used them as a proxy for interpreting magma compositional changes through time, which is connected to the development of medium-K2O, light-REE-enriched continental crust (as compared to low-K2O, light-REE-depleted oceanic crust).
Comments
Outstanding Poster Award Recipient