T16 Evolution of the Midcontinent Rift: A Window into Proterozoic Environments, a Repository of Minerals, and a Lesson in Rifting I

Sunday, 4 November 2018
8:00 AM - 12:00 PM
Room 242

Presentations

• 8:15 AM
  PRECAMBRIAN RIFT SYSTEMS IN NORTH AMERICA COMPARED TO OTHER CONTINENTAL RIFTS AROUND THE WORLD
  G. Randy Keller, University of Oklahoma, Norman, OK and Seth A. Stein, Northwestern University, Evanston, IL and Carol Stein, University of Illinois at Chicago, Chicago, IL and Reece P. Elling, Northwestern University, Evanston, IL
  318583 (Technical Sessions)
• 8:30 AM
  DEPTH AND TIME DEPENDENCE OF STRAIN PARTITIONING IN THE DEVELOPMENT OF MESOZOIC AND CENOZOIC EXTENSIONAL STRUCTURES WITHIN THE TURKANA DEPRESSION, EAST AFRICA
  Luelseged Emishaw, Klienfelder, Irving, TX and Mohamed Abdelsalam, Oklahoma State University, Stillwater, OK
  322663 (Technical Sessions)
• 8:45 AM
  PROTEROZOIC RIFTING IN THE BALTIC SHIELD REVISITED: LADOGA IS NOT A RIFT
  Irina M. Artemieva, University of Copenhagen, Copenhagen and Alexey Shulgin, University of Oslo, Oslo
  320447 (Technical Sessions)
• 9:00 AM
  SEISMIC STRATIGRAPHY OF THE 1.1 GA MIDCONTINENT RIFT BENEATH WESTERN LAKE SUPERIOR PART I: SUBSIDENCE AS A MAJOR DRIVER ON BASIN DEVELOPMENT
  Esther K. Stewart, Madison, WI and Vivian Grauch, U.S. Geological Survey, Denver, CO and Laurel Woodruff, US Geological Survey Eastern Mineral Resources, Mounds View, MN and Samuel Heller, U.S. Geological Survey, Denver, CO
  323433 (Technical Sessions)
• 9:20 AM
  AEROMAGNETIC DATA ESTIMATE MAGNETIC SOURCE DEPTHS BENEATH LAKE SUPERIOR
  Eric Anderson, U.S. Geological Survey, Denver, CO and Vivian Grauch, U.S. Geological Survey, Denver, CO
  322262 (Technical Sessions)
• 9:35 AM
  REVERSE FAULT OR COMPLEX FEEDER ZONE?: EVALUATING GEOPHYSICAL OBSERVATIONS OF THE 1.1 GA MIDCONTINENT RIFT FROM ISLE ROYALE TO SUPERIOR SHOAL AND BROADER GEOLOGIC IMPLICATIONS FOR NORTHERN LAKE SUPERIOR
  Vivian Grauch, U.S. Geological Survey, Denver, CO and Laurel Woodruff, US Geological Survey Eastern Mineral Resources, Mounds View, MN and Esther K. Stewart, Madison, WI
  323952 (Technical Sessions)
• 9:50 AM
  DIVERSE FEEDER SOURCES FOR THE PORTAGE LAKE VOLCANICS, MIDCONTINENT RIFT SYSTEM
  Laurel Woodruff, US Geological Survey Eastern Mineral Resources, Mounds View, MN and Vivian Grauch, U.S. Geological Survey, Denver, CO and Esther K. Stewart, Madison, WI and Klaus J. Schulz, Reston, VA and Suzanne W. Nicholson, U.S. Geological Survey, Reston, VA
  319214 (Technical Sessions)
• 10:25 AM
  CONSTRAINING THE GEOCHEMICAL RESERVOIRS CONTRIBUTING TO VOLCANISM IN THE KEWEENAW LIP
  Tyrone O. Rooney, Michigan State University, East Lansing, MI and Andrew LaVigne, Michigan State University, East Lansing, MI and Jasper Konter, University of Hawaii, Honolulu, HI and Eric Brown, Aarhus University, Aarhus and Seth Stein, Northwestern University, Evanston, IL and Robert Moucha, Syracuse University, Syracuse, NY and Carol Stein, University of Illinois at Chicago, Chicago, IL
  323279 (Technical Sessions)
• 10:40 AM
  MAGMATIC PLUMBING EVOLUTION DURING THE LATENT PHASE OF THE MIDCONTINENT RIFT
  Tom Hudgins, University of Puerto Rico Mayagüez, Mayagüez, PR and Tyrone O. Rooney, Earth and Environmental Sciences, East Lansing, MI
  324429 (Technical Sessions)
• 10:55 AM
  CRUSTAL CONTAMINATION IN THE TERMINAL STAGES OF THE KEWEENAWAN LARGE IGNEOUS PROVINCE: GEOCHEMICAL EVIDENCE FROM THE PORCUPINE MOUNTAINS
  Christopher Svoboda, Michigan State University, East Lansing, MI and Tyrone O. Rooney, Michigan State University, East Lansing, MI and Andrew LaVigne, Michigan State University, East Lansing, MI and Eric Brown, Aarhus University, Aarhus and Seth A. Stein, Northwestern University, Evanston, IL and Carol Stein, University of Illinois at Chicago, Chicago, IL and Robert Moucha, Syracuse University, Syracuse, NY and Jasper Konter, University of Hawaii, Honolulu, HI
  319193 (Technical Sessions)
• 11:10 AM
  TERMINAL STAGES OF A DYING RIFT
  Andrew LaVigne, Michigan State University, East Lansing, MI and Tyrone O. Rooney, Michigan State University, East Lansing, MI and Jasper Konter, University of Hawaii, Honolulu, HI and Robert Moucha, Syracuse University, Syracuse, NY and Eric Brown, Aarhus University, Aarhus and Seth A. Stein, Northwestern University, Evanston, IL and Carol Stein, University of Illinois at Chicago, Chicago, IL
  319455 (Technical Sessions)