4 Probing the Precambrian in the Midwest: Reconciling Geological, Geochemical and Geophysical Observations-I

Monday, 23 April 2001
8:00 AM - 12:00 PM

Presentations

• 8:00 AM
  A GEOPHYSICAL VIEW OF THE PRECAMBRIAN BASEMENT OF SOUTHERN WISCONSIN
  W. F. Cannon, USGS, Reston, VA and D. L. Daniels, USGS, Reston, VA and S. L. Snyder, USGS, Reston, VA and S. W. Nicholson, USGS, Reston, VA
  5534 (SYMPOSIA)
• 8:20 AM
  DO THERMAL HISTORIES REVEAL TIMING OF POST-OROGENIC CRATONIZATION?: LESSONS FROM TWO PALEOPROTEROZOIC OROGENS WITHIN THE NORTH AMERICAN CRATON
  D. A. Schneider, Syracuse Univ, Syracuse, NY and D. K. Holm, Kent State Univ, Kent, OH
  5126 (SYMPOSIA)
• 8:40 AM
  PRECAMBRIAN TERRANES IN SOUTHERN WISCONSIN AND NORTHERN ILLINOIS: WHAT'S HIDING IN THE BASEMENT
  Jeffrey K. Greenberg, Wheaton College, Wheaton, IL
  5289 (SYMPOSIA)
• 9:00 AM
  MAGNETIC AND MINERALOGICAL INVESTIGATIONS OF PHYLLITE LAYERS FROM THE BARABOO AREA, WI
  Colleen Kelly, Univ of Wisconsin-Milwaukee, Milwaukee, WI and William F. Kean, Univ of Wisconsin-Milwaukee, Milwaukee, WI
  5604 (SYMPOSIA)
• 9:20 AM
  RECOGNITION OF WOLF RIVER-AGE METAMORPHISM IN THE BARABOO RANGE BY MEANS OF 40AR/39AR THERMOCHRONOLOGY
  Alissa A. Naymark, Univ of Wisconsin - Madison, Madison, WI and Brad S. Singer, Univ of Wisconsin - Madison, Madison, WI and L. Gordon Medaris, Univ of Wisconsin - Madison, Madison, WI
  5559 (SYMPOSIA)
• 9:40 AM
  CENTRAL PLAINS OROGEN - ACCRETIONARY CORE OF THE NORTH AMERICAN TRANSCONTINENTAL PROTEROZOIC PROVINCE
  Marvin P. Carlson, Nebraska Geol Survey, Lincoln, NE and Samuel B. Treves, Nebraska Geol Survey, Lincoln, NE
  4241 (SYMPOSIA)
• 10:20 AM
  PROTEROZOIC OROGENIC AND MAGMATIC DOMAINS IN THE MIDCONTINENT REGION, USA: GEOCHEMICAL VS GEOPHYSICAL EVIDENCE
  W. R. Van Schmus, Univ. Kansas, Lawrence, KS and M. E. Bickford, Syracuse Univ, Syracuse, NY
  5238 (SYMPOSIA)
• 10:40 AM
  A "NEW" PRECAMBRIAN GEOLOGIC PROVINCE BENEATH THE ILLINOIS BASIN, USA
  John H. McBride, Univ of Illinois at Urbana-Champaign, Champaign, IL and Dennis R. Kolata, Univ of Illinois at Urbana-Champaign, Champaign, IL
  5189 (SYMPOSIA)
• 11:00 AM
  PALEOPROTEROZOIC AND MESOPROTEROZOIC DOMAINS WITHIN THE SOUTHERN GRANITE-RHYOLITE PROVINCE IDENTIFIED USING SM-ND ISOTOPIC METHODS
  C. R. Rohs, Northwest Missouri State Univ, Maryville, MO and W. R. Van Schmus, Univ of Kansas, Lawrence, KS
  5151 (SYMPOSIA)
• 11:20 AM
  THE COMMERCE GEOPHYSICAL LINEAMENT AND ITS POSSIBLE RELATION TO PROTEROZOIC IGNEOUS COMPLEXES AND LARGE EARTHQUAKES IN THE CENTRAL ILLINOIS BASIN
  Thomas G. Hildenbrand, U.S. Geol Survey, Menlo Park, CA and John H. McBride, Univ. of Illinois at Urbana-Champaign, Champaign, IL and Tiku Ravat, Southern Illinois Univ, Carbondale, IL
  5342 (SYMPOSIA)
• 11:40 AM
  MODELS FOR THE ORIGIN OF THE MESOPROTEROZOIC "GRANITE-RHYOLITE" PROVINCE
  Robert D. Shuster, Univ Nebraska - Omaha, Omaha, NE
  5570 (SYMPOSIA)