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Tina Roberts-Ashby, Ph.D.

Science Center Director
Geology, Energy & Minerals Science Center
Phone
703-648-6543

Carla A. Brezinski

Associate Science Center Director
Geology, Energy & Minerals Science Center
Phone
703-648-6317

Evan A. Bargnesi

Associate Science Center Director
Geology, Energy & Minerals Science Center
Phone
703-648-6407

Employee Directory

Job Title
Name
Email
Phone
Research Microbiologist Denise M. Akob, Ph.D. dakob@usgs.gov 703-648-5819
Research Economist Steven T. Anderson sanderson@usgs.gov 703-648-6486
Scientist Emeritus Emil D. Attanasi, Ph.D. attanasi@usgs.gov 703-648-6129
Research Geologist Robert Ayuso rayuso@usgs.gov 703-648-6347
Associate Science Center Director Evan A. Bargnesi ebargnesi@usgs.gov 703-648-6407
Mendenhall Postdoctoral Fellow Naomi A. Becker, Ph.D. nbecker@usgs.gov
Administrative Operations Assistant Sharon B. Branch sbranch@usgs.gov 703-648-6474
Research Geologist Sean T. Brennan sbrennan@usgs.gov 703-648-6434
Associate Science Center Director Carla A. Brezinski cbrezinski@usgs.gov 703-648-6317
Research Geologist Marc L. Buursink, Ph.D. mbuursink@usgs.gov 703-648-6517
Cartographer Steven M. Cahan scahan@usgs.gov 703-648-6435
Scientist Emeritus William F. Cannon wcannon@usgs.gov 703-648-6345
Chemist, Laboratory Manager Jessica M. Chenault jchenault@usgs.gov 703-648-6425
Research Geologist (Faculty Appointment) Christopher D. Connors cconnors@usgs.gov 703-648-6478
Research Geologist John W. Counts, Ph.D. jcounts@usgs.gov 703-648-6491
Research Hydrologist Isabelle M. Cozzarelli, Ph.D. icozzare@usgs.gov 703-648-5899
Research Geologist William H. Craddock, Ph.D. wcraddock@usgs.gov 703-648-6515
Physical Scientist Amalia P. Culpepper-Wehr aculpepper-wehr@usgs.gov
Physical Scientist Christina A. DeVera cdevera@usgs.gov 703-648-6441
Geologist Connie L. Dicken cdicken@usgs.gov 703-648-6482
Research Geologist Colin Doolan cdoolan@usgs.gov 703-648-6761
Geologist Joseph A. East jeast@usgs.gov 703-648-6450
Data Scientist John W. Fisher jwfisher@usgs.gov 703-648-6429
Research Geologist Nora Foley nfoley@usgs.gov 703-648-6179
Physical Scientist Joao S. Gallotti sgallotti@usgs.gov 703-648-6492
Supervisory Cartographer Christopher P. Garrity cgarrity@usgs.gov 703-648-6426
Physical Scientist Jacqueline P. Green jpgreen@usgs.gov 703-648-5827
Geologist Carlin J. Green cjgreen@usgs.gov 703-648-6331
Research Chemist Karl B Haase, Ph.D. khaase@usgs.gov 703-648-5818
Research Geologist Paul C. Hackley, Ph.D. phackley@usgs.gov 703-648-6458
Scientist Emeritus Jane M. Hammarstrom jhammars@usgs.gov 703-648-6165
Research Physical Scientist Jade Harper (Palma J. Botterell) jadeharper@usgs.gov 703-648-5416
Physical Science Technician Javin J. Hatcherian jhatcherian@usgs.gov 703-648-6455
Scientist Emeritus Dan O. Hayba dhayba@usgs.gov 703-648-6327
Research Chemist Sarah M. Hayes, Ph.D. shayes@usgs.gov 703-648-6461
Program Analyst Luis A. Henry Vazquez lhenryvazquez@usgs.gov 703-648-6408
Chemist Amanda S. Herzberg aherzberg@usgs.gov 703-648-6462
Geologist Darryl A. Hoppe dhoppe@usgs.gov 703-648-6506
Scientist Emeritus David W. Houseknecht dhouse@usgs.gov 703-648-6466
Research Geologist Bernard E. Hubbard bhubbard@usgs.gov 703-648-6155
Physical Science Technician Rani Indela vindela@usgs.gov 703-648-6504
Physical Scientist Glenn D. Jolly gdjolly@usgs.gov 703-648-5866
Research Geologist Matthew M. Jones, Ph.D. mmjones@usgs.gov 703-648-6468
Research Chemist Aaron M. Jubb, Ph.D. ajubb@usgs.gov 703-648-6481
Research Petroleum Engineer Cevat O. Karacan, Ph.D. ckaracan@usgs.gov 703-648-6456
Research Physical Scientist Bryan A. Killingsworth, Ph.D. bkillingsworth@usgs.gov 703-648-6341
Scientist Emeritus Allan Kolker akolker@usgs.gov 703-648-6418
Data Scientist Louisa A. Kramer lkramer@usgs.gov
Physical Scientist Graham W. Lederer, Ph.D. glederer@usgs.gov 703-648-7719
Research Geologist Denise M. Levitan, Ph.D. dlevitan@usgs.gov 703-648-6414
Research Geologist Celeste D. Lohr clohr@usgs.gov 703-648-6438
Research Chemist Andrew L. Masterson, Ph.D. amasterson@usgs.gov 703-648-6432
Research Physical Scientist Bonnie McDevitt, Ph.D. bmcdevitt@usgs.gov 703-648-6678
Research Geologist Matthew D. Merrill mmerrill@usgs.gov 703-648-6457
Research Chemist Elisha “Eli” K. Moore, Ph.D. ekmoore@usgs.gov 703-648-6465
Information Technology Specialist (Internet) Eric A. Morrissey emorriss@usgs.gov 703-648-6409
Physical Scientist Jennifer L. Nedzweckas jnedzweckas@usgs.gov 703-648-6449
Biologist Alexis M. Painter apainter@usgs.gov 703-648-6496
IT Specialist (Data Management) Andy J. Park apark@usgs.gov 703-648-6424
Research Geologist Nadine M. Piatak-Hackley npiatak@usgs.gov 703-648-6254
Biologist Bridgette F. Polite bpolite@usgs.gov 703-648-5479
Data Scientist Jeremy K. Ray jray@usgs.gov 703-648-6415
Science Center Director Tina Roberts-Ashby, Ph.D. troberts-ashby@usgs.gov 703-648-6543
Research Geologist Joshua M. Rosera, Ph.D. jrosera@usgs.gov 703-648-6352
Geologist William A. Rouse wrouse@usgs.gov 703-648-6423
Scientist Emeritus Leslie F. (Jingle) Ruppert lruppert@usgs.gov 703-648-6431
Mendenhall Research Geologist Ross A. Salerno, Ph.D. rsalerno@usgs.gov 703-648-6499
Chemist Margaret M. Sanders, Ph.D. msanders@usgs.gov 703-648-6427
Research Geologist Clinton T. Scott, Ph.D. clintonscott@usgs.gov 703-648-6329
Research Geologist Robert R. Seal rseal@usgs.gov 703-648-6290
Physical Scientist Alisa Shtabnoy ashtabnoy@usgs.gov
Budget Analyst Teresa L. Sims tsims@usgs.gov 479-747-0373
Scientist Emeritus John F. Slack jfslack@usgs.gov 703-648-6337
Scientist Emeritus Ernie R Slucher eslucher@usgs.gov 614-430-7746
Physical Scientist Rebecca A. Smith rsmith@usgs.gov 703-648-6433
Research Geologist Federico Solano fsolanoc@usgs.gov 703-648-6335
Geographer Victoria G. Stengel vstengel@usgs.gov 512-927-3571
Research Physical Scientist Martha (Rebecca) Stokes, Ph.D. mstokes@usgs.gov 703-648-6479
Research Chemist Elizabeth J. Tomaszewski, Ph.D. etomaszewski@usgs.gov 703-648-6483
Geologist Michael H. Trippi mtrippi@usgs.gov 703-648-4597
Research Physical Scientist Brett J. Valentine bvalentine@usgs.gov 703-648-6480
Research Chemist Matthew S. Varonka, Ph.D. mvaronka@usgs.gov 703-648-6412
Physical Scientist Paul W. Volante pvolante@usgs.gov
Senior Research Geologist Peter D. Warwick, Ph.D. pwarwick@usgs.gov 703-648-6469
Research Chemist Sarah Jane White, Ph.D. sjowhite@usgs.gov 703-648-6361
Mathematical Statistician Ashton Wiens, Ph.D. awiens@usgs.gov
Scientist Emeritus Laurel G. Woodruff woodruff@usgs.gov 763-783-3291
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