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Caltech
Division of Geological and Planetary Sciences
Rebecca Greenberger
Lab Manager and Research Scientist
Planetary Science; 
Michael (Mike) Greklek-McKeon
Graduate Student
Planetary Science; 
John P. Grotzinger
Harold Brown Professor of Geology
Geobiology;  Geology; 
Lisa Guan
Visitor in Geobiology
Geobiology; 
Yunbin Guan
Director, Center for Microanalysis
Huiyun Guo
Postdoctoral Scholar Research Associate in Geophysics
Geophysics; 
Yongzhao Guo
Graduate Student
Environmental Science and Engineering; 
Michael C. Gurnis
John E. and Hazel S. Smits Professor of Geophysics; Clarence R. Allen Leadership Chair, Seismological Laboratory; Director, Seismological Laboratory; Director, Schmidt Academy for Software Engineering
Geophysics; 
Daniel Halford
Postdoctoral Scholar Research Associate in Geochemistry
Geochemistry; 
Yinuo Han
Postdoctoral Scholar Research Associate in Planetary Science
Planetary Science; 
David G. Harkrider
In Memoriam
John M. Harris
Visitor in Geology
Geology; 
Sina Hasheminassab
Visitor in Environmental Science and Engineering
Environmental Science and Engineering; 
Yurina Hashimoto
Graduate Student
Geobiology; 
Jamshid Hassanzadeh
Visitor in Geology
Geology; 
Egill Hauksson
Research Professor of Geophysics, Emeritus
Geophysics; 
Yuanyuan He
Postdoctoral Scholar Research Associate in Geochemistry
Geochemistry; 
Zichang He
Graduate Student
Environmental Science and Engineering; 
Thomas H. Heaton
Professor of Engineering Seismology, Emeritus
Geophysics; 
Elizabeth Heiny
Graduate Student
Geology; 
Donald V. Helmberger
In Memoriam
Bryana Henderson
Visitor in Geochemistry
Geochemistry; 
Juan D. Hernandez
Graduate Student
Geology; 
Isaac A. Hilburn
Applications Development Associate
Geobiology;  Geochemistry; 
Tyler Hirata
System Administrator
Amy E. Hofmann
Visiting Associate in Geochemistry
Geochemistry; 
Courtney Hoggro
Network Engineer
Gregory J. (Greg) Holk
Visitor in Geochemistry
Geochemistry; 
Cate Holmes
Research Laboratory Technician
Environmental Science and Engineering; 
Shane K. Houchin
Graduate Student
Geology; 
Martha A. House
Visitor in Geology
Geology; 
Robert M. Housley
Visitor in Geochemistry
Geochemistry; 
Jinping Hu
Staff Scientist
Geochemistry; 
Mo Hu
Graduate Student
Geophysics; 
Renyu Hu
Visiting Associate in Planetary Science
Planetary Science; 
Allen L. Husker
Research Professor of Geophysics
Geophysics; 
Mma Ikwut-Ukwa
Graduate Student
Planetary Science; 
Kyungjae (KJ) Im
Scientific Research Senior
Geology; 
Andrew P. Ingersoll
Professor of Planetary Science, Emeritus
Environmental Science and Engineering;  Planetary Science; 
Julie A. Inglis
Graduate Student
Planetary Science; 
Emma Xueqian Isella
Undergraduate
Geobiology; 
Jennifer M. Jackson
William E. Leonhard Professor of Mineral Physics
Geophysics; 
Mehul Jangir
Non-Degree Student
Geochemistry; 
Anna B. Jaruga
Senior Research Scientist
Environmental Science and Engineering; 
Erika J. Jaski
Seismic Analyst
Julianna Jin
Research Assistant
Planetary Science; 
Lucile M. (Lucy) Jones
Visiting Associate in Geophysics
Geophysics; 
Valeriya Kachmar
Graduate Student
Planetary Science;