Department Directory

Department Chair: Dr. James Farquhar

Graduate Director: Dr. Vedran Lekic

Undergraduate Director: Dr. John Merck

The Department of Geology is located in four buildings on campus:

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Name Title Office Phone # Email
Clark, Jaclyn Visiting Assistant Research Scientist PHY 4336 jdclark [at] umd [dot] edu
Bernhardt, Hannes Visiting Assistant Research Scientist PHY 4332 hbernhar [at] umd [dot] edu
Williams, Edward Graduate Student PHY 4310 ewilli17 [at] umd [dot] edu
Giles, Jacob Graduate Student PHY 4310 jdgiles [at] umd [dot] edu
Moyer, Benjamin Graduate Student PHY 4310 blmoyer [at] umd [dot] edu
Khatib, Aisha Graduate Student PHY 4308 akhatib1 [at] umd [dot] edu
Wike, Linden Graduate Student PHY 4308 lwike [at] umd [dot] edu
Naseem, Mariam Graduate Student PHY 4308 mnaseem [at] umd [dot] edu
Arévalo, Ricardo Associate Professor PHY 2332 (301) 405-5352 rarevalo [at] umd [dot] edu
Andrews, Lucas Graduate Student PHY 2330 andrewsl [at] umd [dot] edu
Raith, Madeline Graduate Student PHY 2330 mraith1 [at] umd [dot] edu
Jaross, Elaine Graduate Student GEO 4108 ejaross [at] umd [dot] edu
Udell-Lopez, Kathrine Graduate Student GEO 4107 kudell [at] umd [dot] edu
Shahid, Saffat Graduate Student GEO 4107 sshahid2 [at] umd [dot] edu
Lastner, Alexander Graduate Student GEO 4106 alastner [at] umd [dot] edu
Hanna, Ashley M. Graduate Student GEO 4105 ahanna13 [at] umd [dot] edu
Jones, Shannan Graduate Student GEO 4104 syjones [at] umd [dot] edu
Candela, Philip A. Professor Emeritus GEO 4103 candela [at] umd [dot] edu
Vig, Zachary Graduate Student GEO 4101 zvig [at] umd [dot] edu
Prestegaard, Karen L. Associate Professor GEO 3117 (301) 405-6982 kpresto [at] umd [dot] edu
Centorbi, Tracey L. Lecturer GEO 3116 tlcento [at] umd [dot] edu
Schmerr, Nicholas C. Associate Professor GEO 3115 (301) 405-4385 nschmerr [at] umd [dot] edu
Lekić, Vedran Professor GEO 3113 (301) 405-4086 ved [at] umd [dot] edu
Huang, Mong-Han Associate Professor GEO 3108 (301) 405-1311 mhhuang [at] umd [dot] edu
Myers, Heidi Graduate Student GEO 3107 hpm [at] umd [dot] edu
Newcombe, Megan E. Assistant Professor GEO 3106 (301) 405-2783 newcombe [at] umd [dot] edu
Peterson, Liam Graduate Student GEO 2112 ldpete [at] umd [dot] edu
Varah-Sikes, Cosmo Graduate Student GEO 2112 cvarahsi [at] umd [dot] edu
Kim, Kyle Graduate Student GEO 2112 kkim1228 [at] umd [dot] edu
Desikamani, Sumedha Graduate Student GEO 2112 sumedhad [at] umd [dot] edu
Wylie, Ann G. Professor Emerita GEO 1121 (301) 405-4079 awylie [at] umd [dot] edu
Brown, Dorothy A. Program Administration Specialist GEO 1120 (301) 405-4082 dabrown [at] umd [dot] edu
Patterson, Joanna Accounting Associate GEO 1120 (301) 405-4365 jpatter1 [at] umd [dot] edu
Merck, John W. Principal Lecturer GEO 1119 (301) 405-4379 jmerck [at] umd [dot] edu
Montero, Michelle Manager, Administrative Services GEO 1117 (301) 405-4065 mmontero [at] umd [dot] edu
Karwoski, Todd M. Faculty Specialist GEO 1115 (301) 405-0084 karwoski [at] umd [dot] edu
Harris, John Graduate Student GEO 1113 jharri20 [at] umd [dot] edu
Wang, Jingchuan Post-Doctoral Associate GEO 1113 jcwang1 [at] umd [dot] edu
Piccoli, Philip M. Research Scientist GEO 1109 (301) 405-6966 piccoli [at] umd [dot] edu
Murtugudde, Raghu Affiliate Professor ESSIC 4025 (301) 314-2622 mahatma [at] umd [dot] edu
Lathrop, Daniel P. Professor ERF 1201J (301) 405-1594 lathrop [at] umd [dot] edu
Helz, George Affiliate Professor Emeritus CHM 3103 (301) 946-3785 helz [at] umd [dot] edu
Brown, Michael Professor CHM 2229B (301) 405-4080 mbrown [at] umd [dot] edu
Martin, Suzanne Assistant Program Director CHM 2223B (301) 405-9891 smarti [at] umd [dot] edu
Kellmayer, Bennett Faculty Assistant CHM 1505 (301) 405-7110 bkellmay [at] umd [dot] edu
Zipparo, Sophia Graduate Student CHM 1227 szipparo [at] umd [dot] edu
Perry, Megan Graduate Student CHM 1227 mperry19 [at] umd [dot] edu
Holtz, Thomas R. Principal Lecturer CHM 1225B (301) 405-6965 tholtz [at] umd [dot] edu
Kaushal, Sujay S. Professor CHM 1225A (301) 405-0454 skaushal [at] umd [dot] edu
Slaughter, Weston Graduate Student CHM 1223B wslaught [at] umd [dot] edu
Dann, Ashley Graduate Student CHM 1223B adann11 [at] umd [dot] edu
Núñez, Karla Graduate Student CHM 1223A knunez12 [at] terpmail [dot] umd [dot] edu
Gansler, Kathryn Graduate Student CHM 1223A ganslerk [at] umd [dot] edu
Shubham, Sourabh Graduate Student CHM 1223A sourabh [at] umd [dot] edu
Montési, Laurent G. J. Professor CHM 1221B (301) 405-7534 montesi [at] umd [dot] edu
Shelton, Sydney Graduate Student CHM 1221A sydneys8 [at] umd [dot] edu
Lee, Yewon Graduate Student CHM 1221A yewonlee [at] umd [dot] edu
Fernandez, Julianne M. Post-Doctoral Associate CHM 1217B jmfernz [at] umd [dot] edu
Hu, Ruifang Post-Doctoral Associate CHM 1217B rfhu [at] umd [dot] edu
Zhu, Mengqiang Associate Professor CHM 1217A (301) 405-9117 mqzhu [at] umd [dot] edu
Wollney, Jenna Faculty Assistant CHM 1212E (301) 405-6980 jwollney [at] umd [dot] edu
Doerrler, Andrew Graduate Student CHM 1212D adoe76 [at] umd [dot] edu
Pedersen, Matthew Graduate Student CHM 1212D mpederse [at] umd [dot] edu
Evans, Michael N. Professor CHM 1212B (301) 405-8763 mnevans [at] umd [dot] edu
Bader, James Graduate Student CHM 1210B jabader [at] terpmail [dot] umd [dot] edu
Mandolini, Tommaso Post-Doctoral Associate CHM 1210B tomnd [at] umd [dot] edu
Zhu, Wenlu Professor CHM 1210A (301) 405-1831 wzhu [at] umd [dot] edu
Penniston-Dorland, Sarah Professor CHM 0229 (301) 405-6239 sarahpd [at] umd [dot] edu
Walker, Richard J. Distinguished University Professor CHM 0228 (301) 405-4089 rjwalker [at] umd [dot] edu
Ash, Richard D. Research Scientist CHM 0227B (301) 405-7504 rdash [at] umd [dot] edu
Willhite, Lori Graduate Student CHM 0226 lnw [at] umd [dot] edu
Chiappe, Emily Graduate Student CHM 0226 echiappe [at] umd [dot] edu
King, Nancy Administrative Assistant CHM 0223B (301) 405-2009 nking124 [at] umd [dot] edu
McDonough, William F. Professor CHM 0223A (301) 405-5561 mcdonoug [at] umd [dot] edu
Tornabene, Hope CHM 0222 hopet [at] umd [dot] edu
Finlayson, Valerie Post-Doctoral Associate CHM 0222 vfinlays [at] umd [dot] edu
Puchtel, Igor S. Research Scientist CHM 0220 (301) 405-4054 ipuchtel [at] umd [dot] edu
Puchtel, Valentina Faculty Assistant CHM 0220 (301) 405-5350 vpuchtel [at] umd [dot] edu
Farquhar, James Distinguished University Professor and Chair CHM 0217B (301) 405-5043 jfarquha [at] umd [dot] edu
Kaufman, Alan Jay Professor CHM 0217A (301) 405-0395 kaufman [at] umd [dot] edu
Bouyon, Amaury Post-Doctoral Associate CHM 0210B abouyon [at] umd [dot] edu
Magen, Cédric Associate Research Scientist CHM 0210B (301) 314-1557 cmagen [at] umd [dot] edu
Hoff, Christiana Graduate Student CHM 0210A ckhoff [at] umd [dot] edu
Stepien, Kathleen Graduate Student CHM 0210A kstep [at] umd [dot] edu
Hellmann, Jan Post-Doctoral Associate CHM 0208 hellmann [at] umd [dot] edu
Gan, Tian Post-Doctoral Associate CHM 0208 gantian [at] umd [dot] edu
Almas, Kiran Shahood Graduate Student CHM 0206C kalmas [at] umd [dot] edu
Faison, Tytrice Graduate Student CHM 0206C tjfaison [at] umd [dot] edu
Dottin, James W. Visiting Post-Doctoral Associate CHM 0206A jdottin [at] umd [dot] edu
Sun, Jiayang Graduate Student BMS 3122 jiayangs [at] umd [dot] edu
Famiglietti, Julia Graduate Student BMS 3122 juliafam [at] umd [dot] edu
Haghnegahdar, Mojhgan A. Post-Doctoral Associate BMS 3119 mojhganh [at] umd [dot] edu
Gatewood, Bernadette Business Manager ATL 3417 (301) 314-2785 gatewood [at] atmos [dot] umd [dot] edu
Sherer, June Director of Administrative Services ATL 3407 (301) 405-2435 jsherer [at] atmos [dot] umd [dot] edu
Zeng, Ning Affiliate Professor ATL 2417 (301) 405-5377 zeng [at] atmos [dot] umd [dot] edu
Sunshine, Jessica Professor ATL 1207F (301) 405-1045 jsunshin [at] umd [dot] edu
Rudnick, Roberta L. Adjunct Emerita Professor rudnick [at] geol [dot] ucsb [dot] edu
Mackwell, Stephen Adjunct Professor sjmackwell [at] gmail [dot] com
Cottrell, Elizabeth Adjunct Professor cottrelle [at] si [dot] edu
Fei, Yingwei Adjunct Professor fei [at] gl [dot] ciw [dot] edu
Roberts, James Adjunct Assistant Professor James.Roberts [at] jhuapl [dot] edu
Shahar, Anat Adjunct Professor ashahar [at] ciw [dot] edu
Smith, Deborah Adjunct Professor dksmith [at] nsf [dot] gov
Stifel, Peter B. Associate Professor Emeritus stifel [at] friend [dot] ly [dot] net
Bermingham, Katherine R. Visiting Assistant Professor kberming [at] umd [dot] edu
Johnson, Tim Visiting Assistant Professor tim.johnson [at] curtin [dot] edu [dot] au
Siegrist, Galt Professor Emeritus g.a.siegrist [at] gmail [dot] com
Maguire, Ross rmaguire [at] unm [dot] edu
Plescia, Jeffrey Adjunct Professor Jeffrey.Plescia [at] jhuapl [dot] edu
Cammarano, Fabio Visiting Associate Research Scientist fc [at] geo [dot] ku [dot] dk
Kim, Doyeon Visiting Assistant Professor dk696 [at] cornell [dot] edu
Sanders, Cecilia B. Assistant Professor (as of July 1, 2025)  
Liu, Hongfei Post-Doctoral Associate hfliu [at] umd [dot] edu

Department Rooms

Room Location Point of Contact
Rock Preparation and Mineral Separation Labs CHM 0212, CHM 0234
Geochemistry Conference Room CHM 0215


Sample Preparatory Labs CHM 0219, CHM 0221 Inquiries: Igor Puchtel
Senior's Room CHM 1215 Teaching Schedule
Conference Room CHM 2223C


Photocopy, Mailroom GEO 1118
Freshman Geology Lab GEO 2106
Geology Majors Lab I GEO 2107
Geology Majors Lab II GEO 2117
Museum GEO 2118


Storage GEO 4112 Inquiries: Philip Piccoli
Rock Storage Facility JUL 1108