T243 New Perspectives on Chert, Its Origin, Diagenesis, and Economic Significance

Wednesday, 30 October 2002
1:30 PM - 5:30 PM

Presentations

• 1:30 PM
  MODERN SILICEOUS HOT SPRING PRECIPITATES: POSSIBLE ANALOGS FOR ANCIENT CHERTS
  Sean Andre Guidry, Univ of Houston, Houston, TX and Henry Chafetz, Univ of Houston, Houston, TX
  38723 (Technical Sessions)
• 1:45 PM
  THE POTENTIAL ROLE OF NANNOBACTERIA (DWARF FORMS, 30-100NM) IN THE PRECIPITATION OF CHERT AND ITS PRECURSORS
  Robert L. Folk, Univ of Texas, Austin, Austin, TX
  39080 (Technical Sessions)
• 2:00 PM
  SEM STUDIES OF PETRIFIED WOOD AND THE POSSIBLE ROLE OF NANNOBACTERIA IN THE SILICIFICATION OF WOOD
  Jeri C. Rodgers, Univ of Texas, Austin, Austin, TX
  38545 (Technical Sessions)
• 2:15 PM
  PARASEQUENCE-SCALE DEPOSITIONAL CYCLES AND SILICA DIAGENESIS CONTROL RESERVOIR PROPERTIES FOR MIOCENE BIOSILICEOUS RESERVOIRS OF THE ELK HILLS FIELD, CALIFORNIA
  Jon R. Schwalbach, Occidental of Elk Hills, Inc, Tupman, CA and William C. Benmore, Occidental of Elk Hills, Inc, Tupman, CA
  41549 (Technical Sessions)
• 2:30 PM
  SHALLOW SHELF BIOSILICEOUS SEDIMENTATION: A TERRESTRIAL ARIDITY RECORD?
  Paul R. Gammon, Univ of Adelaide, Adelaide, N/A and Noel P. James, Queen's Univ, Ontario, ON
  39249 (Technical Sessions)
• 2:45 PM
  GROWTH AND DEMISE OF PERMIAN BIOGENIC CHERT ALONG NORTHWEST PANGEA: EVIDENCE FOR END-PERMIAN COLLAPSE OF THERMOHALINE CIRCULATION
  Benoit Beauchamp, Geol Survey of Canada, Calgary, AB and Aymon Baud, Musée cantonal de géologie, Lausanne, N/A
  37079 (Technical Sessions)
• 3:00 PM
  A GLASS RAMP: LATE PERMIAN SPICULITES, SVERDRUP BASIN, ARCTIC CANADA
  Laura M. Gates, Queen's Univ, Kingston, ON and Noel P. James, Queen's Univ, Ontario, ON and Benoit Beauchamp, Geol Survey of Canada, Calgary, AB
  39802 (Technical Sessions)
• 3:15 PM
  COMPARISON OF MIDDLE MISSISSIPPIAN OSAGIAN SHELF AND SHELF MARGIN CHERT DEPOSITS IN CENTRAL KANSAS
  W. Lynn Watney, The Univ of Kansas, Lawrence, KS and Evan K. Franseen, The Univ of Kansas, Lawrence, KS and Alan P. Byrnes, The Univ of Kansas, Lawrence, KS
  35749 (Technical Sessions)
• 3:30 PM
  DEPOSITIONAL SETTING, LITHOLOGIC CHARACTER, AND ORIGIN OF CHERT IN THE BOONE FORMATION (LOWER MISSISSIPPIAN), NORTHERN ARKANSAS
  Walter L. Manger, University of Arkansas, Fayetteville, AR and Alicia Fallacaro, Univ of Nevada - Reno, Reno, NV and Nelia W. Dunbar, New Mexico Institute of Mining and Technology, Socorro, NM
  42025 (Technical Sessions)
• 3:45 PM
  WIDESPREAD LATE ORDOVICIAN SILICIFICATION EVENT ON LAURENTIA: A PROXY FOR THE DURATION OF GONDWANA GLACIATION?
  Michael C. Pope, Washington State Univ, Pullman, WA
  38161 (Technical Sessions)
• 4:00 PM
  GEOCHEMICALLY IDENTIFYING PRIMARY DEPOSITIONAL CHERT FROM EARLY AND LATE DIAGENETIC CHERT IN THE LATE ORDOVICIAN MONTOYA GROUP
  Jessica B Steffen, Washington State University, Pullman, WA and Michael C. Pope, Washington State Univ, Pullman, WA
  39742 (Technical Sessions)
• 4:15 PM
  CHANGING ENVIRONMENTS OF CHERT ACCUMULATION THROUGH THE ORDOVICIAN
  Iulia Tomescu, Ohio Univ, Athens, OH and David L. Kidder, Ohio Univ, Athens, OH
  40855 (Technical Sessions)
• 4:30 PM
  ARE CONTINENTAL MARGIN CHERTS A MOVING TARGET?
  David L. Kidder, Ohio Univ, Athens, OH
  40845 (Technical Sessions)
• 4:45 PM
  FRACTAL ANALYSIS AND ORIGIN OF A CHERT MEGABRECCIA IN THE RICHAT DOME, MAURITANIA, AFRICA
  Guillaume Matton, Université du Québec à Montréal, Montreal, QC and Michel Jebrak, Univ Quebec - Montreal, Montreal, QC and Ahmedou ould Mahfoudh, Nouakchott Univ, Nouakchott, N/A
  38390 (Technical Sessions)
• 5:00 PM
  CHERT AND THE PROTEROZOIC OCEANIC SILICA CYCLE
  Robert G. Maliva, Camp Dresser & McKee, Inc, Fort Myers, FL and Bruce M. Simonson, Oberlin College, Oberlin, OH and Andrew H. Knoll, Harvard Univ, Cambridge, MA
  38411 (Technical Sessions)
• 5:15 PM
  CHERT PROBLEMS: BURDENS OF A CENTURY OF NEGLECT
  James P. Rogers, Consultant, Aurora, CO and Mark W. Longman, Lakewood, CO
  41269 (Technical Sessions)