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Caltech
Division of Geological and Planetary Sciences
Jessie K. Saunders
EEW Seismologist
Geophysics; 
Dominic J. Scheckel
Senior Research Technician
Maria Schmeer
Graduate Student
Geology; 
Julian Schmitt
Graduate Student
Environmental Science and Engineering; 
Tapio Schneider
Theodore Y. Wu Professor of Environmental Science and Engineering
Environmental Science and Engineering; 
Julie Schoen
Business Manager
Jeremy Schreier
Postdoctoral Scholar Research Associate in Geobiology
Geobiology; 
William Schroer
Postdoctoral Scholar Research Associate in Geobiology
Geobiology; 
Christina H. (Tina) Seeger
Graduate Student
Geology; 
Alex L. Sessions
Nico and Marilyn van Wingen Professor of Geobiology
Environmental Science and Engineering;  Geobiology;  Geochemistry; 
Robert P. Sharp
In Memoriam; Chairman, Division of Geology, 1952-68.
Lubna Shawar
Research Scientist
Geochemistry; 
Jennifer Shechet
Division Academic Affairs Manager
Zhaoyi Shen
Senior Research Scientist
Environmental Science and Engineering; 
Qian Shi
Graduate Student
Geophysics; 
Yanan Shi
Visitor in Geophysics
Geophysics; 
Run-Lie Shia
Associate Research Scientist
Planetary Science; 
Eugene Shoemaker
In Memoriam; Chairman, Division of Geology, 1969-72.
Anamika Shreevastava
Postdoctoral Scholar Research Associate in Environmental Science and Engineering
Environmental Science and Engineering; 
Rajani Shrestha
Graduate Student
Geophysics; 
Leon T. "Lee" Silver
In Memoriam
Shaelyn N. Silverman
Graduate Student
Geobiology; 
Mark Simons
John W. and Herberta M. Miles Professor of Geophysics; Director, Brinson Exploration Hub
Geophysics; 
Paul Siqueira
Visiting Associate in Planetary Science
Planetary Science; 
Jack Skinner
Visitor in Environmental Science and Engineering
Environmental Science and Engineering; 
Suzanne Smrekar
Visiting Associate in Geophysics
Geophysics; 
Michael A. Sowell
Undergraduate
Planetary Science; 
Akshay Sridhar
Research Scientist
Environmental Science and Engineering; 
Amanda Steckel
Postdoctoral Scholar Research Associate in Planetary Science
Planetary Science; 
David J. (Dave) Stevenson
Marvin L. Goldberger Professor of Planetary Science, Emeritus
Geophysics;  Planetary Science; 
Bryn Stewart
Foster and Coco Stanback Postdoctoral Scholar Research Associate in Environmental Science and Engineering
Environmental Science and Engineering; 
Chester Stock
In Memoriam; Chairman, Division of Geology, 1947-1950.
Joann M. Stock
Professor of Geology and Geophysics
Geology;  Geophysics; 
Edward M. Stolper
Judge Shirley Hufstedler Professor of Geology
Geochemistry;  Geology; 
Ben Strozewski
Graduate Student
Geophysics; 
Igor Stubailo
Research Engineer
Wolfgang Sturhahn
Visitor in Geophysics
Geophysics; 
Xue Su
Postdoctoral Scholar Research Associate in Geochemistry
Geochemistry; 
Katelyn Sulett
Geobiology; 
Theo Tacail
Postdoctoral Scholar Research Associate in Geochemistry
Geochemistry; 
Mattia Tagliavento
Postdoctoral Scholar Research Associate in Geochemistry
Geochemistry; 
Riley L. Tam
Planetary Science; 
Ryan W. Tam
Associate Data Scientist/Software Developer
Geophysics; 
Yuri Tamama
Graduate Student
Geophysics; 
Hugh P. Taylor Jr.
In Memoriam
Joao Teixeira
Visiting Associate in Environmental Science and Engineering
Environmental Science and Engineering; 
Julia Tejada
Assistant Professor of Geobiology; William H. Hurt Scholar
Geobiology;  Geochemistry; 
Gabrielle M. Tepp
Staff Seismologist
Geophysics;