John M. Cottle
Professor of Geology
Department of Earth Science & Earth Research Institute
Faculty Director UCSB Natural Reserve System
University of California, Santa Barbara, CA 93106-9630
Email: [email protected] Tel: (805)-893-7315 (Location map)

D.Phil., University of Oxford, 2008
M.Sc., University of Otago, 2002
B.Sc., University of Otago, 2000

Google Scholar Page

We are always looking for people to join our group. If any of the projects on our Research page interest you, get in touch.

Current Group Members

Morgan Adamson

Ph.D. Himalayan Tectonics

Ryan Eden

Ph.D. Basin & Range Tectonics

Alec Baudry

Ph.D. Ocean Island Geochronology

Griffin Easthouse

M.Sc. Rare Earth Element Mineralization in Nevada

Austin Gessini

Undergraduate Researcher

Sarah Kreitzer-lillard

Undergraduate Researcher

Adrianna Martinez

Undergraduate Researcher

Marcus O'Connor

Undergraduate Researcher

Past Group Members

Sandy Schwarzbart

Undergraduate Researcher

Purbajyoti Phukon

Fulbright Postdoctoral Scholar

Isabella Welch​

Graduate Lab assistant

James Delehanty

Undergraduate Researcher

Caroline Newell

Graduate Lab assistant

​Lindsay Buff

M.S. Carbonatite magmatism in Tanzania 

Dylan Schroeder

Undergraduate Researcher

Aliyah Sarna

Undergraduate Researcher

Elizabeth Erickson

Ph.D. Geochronology of granitoids  from Northern Victoria Land, Antarctica

Melia Ochoa

Undergraduate Researcher

Francisco Apen

Ph.D. Thermochronology of the lower crust

Alex Johnson

Ph.D. Geochronology  of metamorphic rocks from the Himalaya
Alex sadly passed away in 2021 and was awarded a posthumous PhD. See tributes to Alex here and here 

Layia Asakawa-Ekeland

Undergraduate Researcher

Ted Brown

Undergraduate Researcher

Aran Mazariegos

Undergraduate Researcher

Nicole Aikin

Undergraduate Researcher

Erin Solloway

Undergraduate Researcher

Valeria Jaramillo Hernandez

Undergraduate Researcher

Demian Nelson

Sarah Grimes

Riley Rohrer

PhD student & Postdoctoral Fellow

Undergraduate Researcher

Undergraduate Researcher

Nicolas Piette-Lauzière

Visiting Ph.D. student from UBCO

Josh Franck

Undergraduate Researcher

Josh Hoeflich

Undergraduate Researcher

Daniel Torres

Undergraduate Researcher

Kayla Leal

Undergraduate Researcher

Charu Garapaty

Undergraduate Researcher

Adam Kershner

Undergraduate Researcher

Bettie Coy

Undergraduate Researcher

CJ Lemler

Undergraduate Researcher

Nicoletta Browne

M.Sc. Geochemistry of
Granite Harbor Intrusives, Antarctica.

Elisa Medri

Undergraduate Researcher

Gin Li

Undergraduate Researcher

Sophie Briggs

Ph.D. Magmatic and Metamorphic evolution of the Southern Alps, NZ

Janelle McAtamney

Ph.D. Structural and 
thermochronologic evolution of the Main Central Thrust, Nepal

Carina Edelman

M.Sc. Geochronology of
REE-bearing Rocks in Colorado.

Chris Strong

Undergraduate Researcher

Nikki Arnush

Undergraduate Researcher

Mason Gonzalez

Undergraduate Researcher

Michelle Carter

Undergraduate Assistant

Haley Perry

Undergraduate Assistant

Keith Chancey

Undergraduate Researcher

Michael Truong

Undergraduate Assistant

Elizabeth Spacone

Undergraduate Researcher

Matthew Mazzoni

Undergraduate Assistant

Erin Shea

Postdoctoral Scholar

Jacob Poletti

M.Sc. 2015.  Petrogenesis of the Mountain Pass Intrusive Suite. 

Graham Hagen-Peter

PhD. 2015. Magmatic
evolution of  the southern Victoria Land segment of the Ross Orogen, insight from U-Pb and Hf isotopes. 

Graham Lederer

PhD. 2015. Petrochronology of crustal anatexis in the Leo Pargil Dome, NW India. 

Tou Xiong

Undergraduate Assistant

Catherine Mottram

Fulbright Postdoctoral Scholar
2014-15

Paige Granneman

Undergraduate Researcher

Nolan Blackford

Undergraduate Researcher

Tyson McKinney

M.Sc. 2014. Rare Earth
Element Mineralization in Joshua Tree National Park.

Kyle Moulton

Undergraduate Researcher

Jason Schmidt

Undergraduate Researcher

Bryan Norman

M.Sc. 2013.

Amanda Willingham

M.Sc. 2012. Time-scales of melt generation and migration in the Ama
Drime Massif, Southern Tibet.

Justin LaForge

Undergraduate Assistant

Camille Collett

Undergraduate Assistant

Dawn Kellett

Postdoctoral Scholar

Robert Maksimow

Undergraduate Researcher

Christie Villanueva

Undergraduate Researcher