RESEARCH

PUBLICATIONS

FIELD PHOTOS

PEOPLE

LABORATORY

COURSES

CLAIRE BUCHOLZ

Assistant Professor of Geology

cbucholz[at]caltech.edu

Curriculum Vitae

BARBARA RATSCHBACHER

Postdoctoral Scholar in Geology

ratschba[at]usc.edu

website

My broader research interest is to understand the structural and geochemical architecture of arc crustal columns. In particular, I am interested in the importance of differentiation processes (fractional crystallization, mixing and assimilation) at various crustal depths (surface to Moho), their tempos and links between deformational regime, magma ascent, and storage in the crustal column. I further use isostatic mass balance modeling to understand the behavior of the arc crust during arc activity and subsequent solid-state deformation.


To answer my research questions, I study exposed arc crustal section, which offer a unique possible to study depth-dependent, crustal generating processes. I use a combination of field mapping, structural and geochemical tools, geochronology, geochemical and thermal modeling.


For my postdoc at CalTech working with Claire Bucholz, I will focus on better understanding the oxidation state of arc crustal columns and the role crustal differentiation in affecting the oxidation state of magmas as various crustal depths. We are also interested in using amphibole, beside more traditional redox proxies, as a potential proxy for the melt chemistry is crystallized from.


MADELINE (MADDIE) LEWIS

Graduate Student in Geochemistry

mjlewis[at]caltech.edu

Mafic Plutonic Rocks in the Eastern Sierra Nevada, California

JOE BIASI

Graduate Student in Geochemistry

biasi[at]caltech.edu

Alkaline Volcanism along the Antarctic Peninsula

EMMA SOSA

Graduate Student in Geology

esosa[at]caltech.edu

Quantification of Spinel and Fe-Ti oxide Ferric/Ferrous Iron Ratios through µ-Mössbauer

MATT BARICKMAN

SURF Student, Undergraduate (Tufts University)

mbarickm[at]caltech.edu

I am a student at Tufts University in Medford, MA majoring in Geological Sciences. My background is in igneous petrology and geochemistry, with a focus on understanding the origin and evolution of subduction zone magmas. I am currently working on a collection of plutonic xenoliths from the Aleutian Island Arc determining mineral chemistry and crystallization conditions (P, T, fO2, aH2O), with the goal of being able to provide a better understanding of the crystallization processes of plutons in oceanic arc systems.