Membership
GSA Honors these 25-Year Members
NOTE: List shows only members reaching their anniversary this year (2013).
Fellows are shown in bold.
| James Alcock | Andrew L. Alden | Mark W. Allen | David T. Allison |
| Ronald G. Amundson | Suzanne P. Anderson | Ulf B. Andersson | Abraham Araya |
| Phillip A. Armstrong | Pranoti M. Asher | Gregory W. Axten | Mark G. Bagel |
| Christopher M. Bailey | Mark H. Bailey | R. Mark Bailey | Nathan L. Bangs |
| Chris A. Barker | James E. Barrick | John H. Bauch | Steven C. Beadle |
| Richard J. Behl | Robert C. Benfield | Philip C. Bennett | Steven W. Bennett |
| George W. Bergantz | Kathryn M. Bethune | Jeanette L. Black | Thomas D. Blackman |
| Wendy A. Bohrson | Irene B. Boland | Beth Nichols Boyd | Roger Buick |
| Roland Burgmann | William C. Burton | Kathleen A. Campbell | Keith B. Campbell |
| Kenneth E. Campbell, Jr. | Philip A. Candela | Brian J. Carter | Kenn D. Cartier |
| Jeffrey D. Cassidy | Steven M. Cather | Vincent M. Ceci | Marjorie A. Chan |
| James R. Chaplin | Robert F. Chenet | Michael P. Chornack | Philippe Claeys |
| Tonya D. Clayton, Ph.D. | Jean S. Cline | Harvey A. Cohen | Christopher D. Connors |
| Richard M. Conrey | Cahit Coruh | Clinton A. Cowan | Marshall W. Deacon |
| Peter G. DeCelles | Ruth G. Deike | Craig M. dePolo | David L. Dettman |
| Carlo Doglioni | Richard K. Dunn | Gary S. Dwyer | Jeffrey G. Eaton |
| Wayne E. Eberhard | Werner Ehrmann | Erika R. Elswick | Robert V. Enright |
| Johan P. Erikson | Renee Mauche Faatz | Christopher M. Fedo | Ray E. Ferrell, Jr. |
| Steven A. Fischbein, PG | Michael R. Fisher | Lisa Rae Fisher | Paul G. Fitzgerald |
| Sarah J. Fowell | Gwendolyn H. Franco | Larry D. Galbiati | William B. Gallagher |
| Robert A. Gecy | Peter G. George | Ennis P. Geraghty | Gary L. Gianniny |
| Carol C. Gilchrist | Craig S. Goodknight | Jonathan Goodmacher | Robert L. Gordon |
| Steven M. Gorelick | Sarah C. Gray | Stephen F. Greb | Tom W. Hahne |
| Brenda L. Hall | Michelle Hall | Mryka C. Hall-Beyer | Sarah L. Hanson |
| Ann Marie Harris | Stephen T. Hasiotis | Richard C. Heathcote | Suzanne Hecker |
| Gary D. Henderson | Timothy D. Herbert | Ronald F. Herrygers | Ezat Heydari |
| Carole S. Hickman | Thomas A. Hickson | Alan R. Hildebrand | Barbara M. Hill |
| Ken-ichiro Hisada | Ann E. Holmes | Norio Honjo | Willard N. Hopkins |
| Bernard A. Housen | Gary A. Huckleberry | Thomas A. Hudson | Jimmie L. Hutchison |
| Lubomir F. Jansa, Ph.D. | Jay S. Johnston | Paul Edward Kareth | Robert O. Karsian |
| Lawrence P. Kennedy | David L. Kimbrough | Robert E. King | Marcia E. Knadle |
| Haralambos D. Kranis | Jerome F. Kraus | Thomas S. Kraus | Robert G. F. Krause |
| Ronald B. Krauth | David A. Kring | Andrea P. Krumhardt | Jeffrey J. Kuglitsch |
| John H. Ladd | David Bennett Laing | Willem Langenberg | Richard D. Law |
| Scott A. Lecce | Stephen C. Lee | Henry A. Legarre | Paula J. Leier-Engelhardt |
| Lawrence D. Lemke | Daniel Linder | Shirley A. Liss | Steven Paul Lundblad |
| Roy W. Lynch | Yasuhiko Makino | Michael O. Maler | Helen N. Mango |
| Patricia L. Manley | Anne Marie Matherne | Glenn L. Matteucci | Stephen R. Mattox |
| Michael T. May, PG | Brian W. McArdell | Steven R. McCollum | James W. McGill |
| Robert G. McGimsey | Jene D. Michaud | Mark J. Mihalasky | James Miller |
| Kate C. Miller | Patrick A. Monahan | Gordon M. Moore | John S. Myers |
| Clive R. Neal | Suzanne OConnell | Jim E. OConnor | Gerald A. OLeary, III |
| Lynn K. Oliver | Robert L. ONeill, PG | Martin R. Palmer | Kurt S. Panter |
| Stavros S. Papadopulos | Lisa E. Park | P. Jonathan Patchett | Penny E. Patterson |
| Joseph P. Pavletich | Robert T. Pavlowsky | Rhonda N. Quinn | David M. Ramirez |
| Peter J. Randazzo, P.G. | Robert G. H. Raynolds | Robert M. Reed | Kenneth D. Ridgway |
| Andrew K. Rindsberg | Uwe Ring | Robert W. Ritzi | Edwin A. Romanowicz |
| Bruce Runnegar | Raymond M. Russo | Derek W. Ryter | James J. Rytuba |
| Dorothy Sack | Ward E. Sanford | Daniel B. Sanger | Dorothy A. Satterfield |
| Peter E. Sauer | Thomas L. Sawyer | Wolfgang A. Schleiss | John T. Schulenberg |
| Christopher M. Scott | Steven C. Semken | John W. Shervais | Claus Siebe |
| Charles D. Smith, PG | Joseph P. Sontchi | Frederick M. Soster | William J. Spitz, PG |
| Paul G. Spry | Michael J. Starbuck | Harold E. Sugden, PG | Edward M. Swinford |
| Gregory H. Symmes | Jennifer A. Thomson | Clifford S. Todd | David J. Topping |
| Susan H. Treagus | Alain Tremblay | Robert C. Trentham | Joseph W. Troester |
| Robert B. Trumbull | Lance D. Tuckruskye | Maria E. Uhle | Michael J. Valentine |
| Cees R. van Staal | Gregory Scott Vandeberg, Ph.D. | Margaret E. Venable | Michael B. Ward |
| Thomas R. Watters | Steven G. Wesnousky | Thomas I. Wilch | M. Scott Wilkerson |
| Wendell E. Wilson | Crayton J. Yapp | Robert S. Young | James C. Zachos |
| James R. Zimbelman |
For further information please contact GSA Sales and Service at gsaservice@geosociety.org, or call +1.888.443.4472.