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Caltech
Division of Geological and Planetary Sciences
William R. Palfey
Postdoctoral Scholar Research Associate in Geochemistry
Geology; 
Juliann N. Panehal
Research Support Assistant
Dimitri A. Papanastassiou
Visitor in Geochemistry
Kimberly Paragas
Graduate Student
Planetary Science; 
Soyeon Park
Graduate Student
Geophysics; 
Yeon Soo Park
Graduate Student
Environmental Science and Engineering; 
Sandi Parra
Grants Manager Assistant
Geobiology;  Geochemistry;  Geology; 
Sergio A. Parra
Graduate Student
Geobiology; 
Ronak N. Patel
Graduate Student
Environmental Science and Engineering; 
Clair C. Patterson
In Memoriam
Leonid Pereiaslov
Graduate Student
Geophysics; 
Henry Peterson
Graduate Student
Environmental Science and Engineering; 
Stephanie Petty
Junior Grants Manager
Planetary Science; 
Alon Philosof
Senior Postdoctoral Scholar Research Associate in Biology & Biological Engineering
Geobiology; 
Yu Yu Phua
Graduate Student
Planetary Science; 
Gabriele Pichierri
Postdoctoral Scholar Research Associate in Planetary Science
Planetary Science; 
Erin Pimentel
Graduate Student
Geology; 
Adriana Piña Paez
Graduate Student
Geology; 
Chrissy Polcino
Research Support Assistant
Geology; 
Klaus Pontoppidan
Visiting Associate in Planetary Science
Planetary Science; 
Chris Pope
Undergraduate
Geobiology; 
Anastasia Popova
CliMA Researcher
Environmental Science and Engineering; 
Channing Prend
Visitor in Environmental Science and Engineering
Environmental Science and Engineering; 
Theodore M. (Ted) Present
Senior Scientific Researcher
Geochemistry; 
Frank Press
In Memoriam
Maria Carmela Raguso
Postdoctoral Scholar Research Associate in Planetary Science
Planetary Science; 
Lillian Randall
Undergraduate
Geochemistry; 
Ojashvi Rautela
Graduate Student
Geophysics; 
Ariel M. Raymond
Earthquake Fellows Program Coordinator
Geophysics; 
Auden Reid-McLaughlin
Graduate Student
Geophysics; 
Alexandre Renchon
Research Software Engineer, Associate
Environmental Science and Engineering; 
Leilani Rivera-Dotson
CliMA Program Coordinator
Environmental Science and Engineering; 
Megan L. Robertson
Environmental Science and Engineering;  Geochemistry; 
Alba Rodriguez Padilla
O.K. Earl Postdoctoral Scholar Research Associate in Geology
Geology; 
Coleen Roehl
Associate Research Scientist
Environmental Science and Engineering; 
Carolyn Rosales
Grants Manager Assistant
Paul A. Rosen
Visiting Associate in Geophysics
Geophysics; 
Zachary E. Ross
Assistant Professor of Geophysics; William H. Hurt Scholar
Geophysics; 
George R. Rossman
Professor of Mineralogy
Geochemistry;  Geology; 
Calvin Rusley
Graduate Student
Geobiology; 
Juliet R. Ryan-Davis
Graduate Student
Geology; 
Alexis Saez Uribe
Postdoctoral Scholar Research Associate in Geology
Geology; 
Morgan Saidel
Graduate Student
Planetary Science; 
Jason B. Saleeby
In Memoriam
Paolo Sanchez
Graduate Student
Geochemistry; 
Stanley P. (Stan) Sander
Visiting Associate in Planetary Science
Planetary Science; 
Lee Saper
Visitor in Geology
Geology; 
Jessie K. Saunders
EEW Seismologist
Geophysics;