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Caltech
Division of Geological and Planetary Sciences
Alexander Thelen
Postdoctoral Scholar Research Associate in Planetary Science
Planetary Science; 
Nithya Thiagarajan
Scientific Research Assistant
Geobiology; 
Andrew F. Thompson
John S. and Sherry Chen Professor of Environmental Science and Engineering; Director, Ronald and Maxine Linde Center for Global Environmental Science; Executive Officer for Environmental Science
Environmental Science and Engineering; 
David R. Thompson
Visitor in Planetary Science
Planetary Science; 
Benjamin J. Thyer
Graduate Student
Geology; 
Francois Tissot
Professor of Geochemistry; Investigator, Heritage Medical Research Institute
Geochemistry;  Geology; 
Iva Tomchovska
Graduate Student
Geobiology; 
Sandy Tran
Grants Manager Assistant
Planetary Science; 
Jonathan Treffkorn
Laboratory Manager
Daniel R. (Dan) Utter
Postdoctoral Scholar Research Associate in Biology and Biological Engineering
Geobiology; 
Andrea Valenzuela
Grants Manager Assistant
John P. Van Deusen
Prototype Precision Machinist
Paulo Vasconcelos
Visiting Associate in Geochemistry
Geochemistry; 
Jeremy Venditti
Visiting Professor in Geology
Geology; 
Valeria Villa
Graduate Student
Geophysics; 
Margaret J. Vinci
Office Manager of Earthquake Programs
Duane E. Waliser
Visiting Associate in Planetary Science
Environmental Science and Engineering; 
Dongchen Wang
Postdoctoral Scholar Research Associate in Geology
Geology; 
Guanli Wang
Graduate Student
Geology; 
Qiren Wang
Graduate Student
Environmental Science and Engineering; 
Ruizhe Roger Wang
Graduate Student
Planetary Science; 
Taiyi Wang
O.K. Earl Postdoctoral Scholar Research Associate in Geophysics
Geophysics; 
Yao-Ping Wang
Visitor in Geochemistry
Geochemistry; 
Yuan Wang
Scientific Research Associate
Planetary Science; 
Yujie Wang
Research Analyst
Environmental Science and Engineering; 
Gerald Wasserburg
In Memoriam; Chairman, Division of Geological and Planetary Sciences, 1987–89.
Michael M. Watkins
Professor of Aerospace and Geophysics
Geophysics; 
Michael B. Watkins
Senior Network Engineer
Hannah V. Way
Graduate Student
Geobiology; 
Glenn A. Waychunas
Visiting Associate in Geochemistry
Geochemistry; 
Xiaozhuo Wei
Postdoctoral Scholar Research Associate in Geophysics
Geophysics; 
Kayla Weng
Research Support-Assistant
Planetary Science; 
Paul O. Wennberg
R. Stanton Avery Professor of Atmospheric Chemistry and Environmental Science and Engineering
Environmental Science and Engineering; 
Brian P. Wernicke
Chandler Family Professor of Geology, Emeritus
Geology; 
Sophia Westerkamp
Graduate Student
Geochemistry; 
James A. Westphal
In Memoriam
Thomas Wieloch
Visitor in Geobiology
Geobiology; 
John D. (Jack) Wilding
Graduate Student
Geophysics; 
Becky Williams
Graduate Student
Planetary Science; 
Oliver Wilner
Graduate Student
Geology; 
Rebecca L. Wipfler
Graduate Student
Geobiology; 
Philip Woods
Graduate Student
Geobiology; 
Daniel S. Wright
Electronic Engineer
Geophysics; 
Dien Wu
Staff Scientist
Environmental Science and Engineering; 
Jennifer Wu
Research Assistant
Debra B. Wunch
Visitor in Environmental Science and Engineering
Environmental Science and Engineering; 
Peter J. Wyllie
Professor of Geology, Emeritus
Geology; 
Tracy Xia
Research Support-Assistant
Planetary Science;