PG12A:
History of Middle Earth: Sedimentation, Evolution, and Tectonics During the Boring Billion I

Submit an Abstract to this Session

Session ID#: 6050

Session Description:
The 1.8-0.8 Ga time window encompasses the break-up of Nuna (Columbia), assembly of Rodinia and coincides with craton-scale mafic magmatic events. However, the sedimentary record reveals gradual changes in the geochemistry of oceans and atmosphere, and the diversity of life through this so-called boring billion. This session aims to address this paradox by examining: regional and global stratigraphic correlations; mafic magmatism and large igneous provinces; tectonic settings and metallogeny of sedimentary basins; supercontinent reconstructions, and; the evolution of the ocean, atmosphere and life.
OSPA Liaison:  Elizabeth Turner, Laurentian University, Sudbury, ON, Canada
Chairs:  Elizabeth Turner, Laurentian University, Sudbury, ON, Canada and Robert Rainbird, Geological Survey of Canada, Ottawa, ON, Canada
Primary Convener:  Robert Rainbird, Geological Survey of Canada, Ottawa, ON, Canada
Conveners:  Elizabeth Turner, Laurentian University, Sudbury, ON, Canada, Galen P Halverson, McGill University, Montreal, QC, Canada and Thomas Skulski, Geological Survey of Canada, Ottawa, ON, Canada
Index Terms:

1051 Sedimentary geochemistry [GEOCHEMISTRY]
1135 Correlative geochronology [GEOCHRONOLOGY]
1525 Paleomagnetism applied to tectonics: regional, global [GEOMAGNETISM AND PALEOMAGNETISM]
4944 Micropaleontology [PALEOCEANOGRAPHY]
Co-Sponsor(s):
  • GP - Geomagnetism and Paleomagnetism
  • PP - Paleoceanography and Paleoclimatology
  • SG - Sedimentary Geology and Paleobiology
  • VGP - Volcanology, Geochemistry, and Petrology

Abstracts Submitted to this Session:

PG12A-01
Questioning Myths of the Middle Proterozoic Time (Invited) (36539)
Andrey Bekker, University of California Riverside, Earth and Planetary Sciences, Riverside, United States
PG12A-02
Proterozoic Atmospheric Oxygen Levels (Invited) (36802)
Noah Planavsky, Yale University, Department of Geology and Geophysics, New Haven, CT, United States, Christopher T. Reinhard, Georgia Institute of Technology, School of Earth & Atmospheric Sciences, Atlanta, United States, Xiangli Shaun Wang, Yale University, New Haven, CT, United States and Timothy Lyons, University of California Riverside, Earth and Planetary Sciences, Riverside, CA, United States
PG12A-03
Sedimentary and Geochemical Heterogeneity in the Mesoproterozoic: A Natural Consequence of Protracted Oxygenation? (Invited) (34857)
Linda C Kah, University of Tennessee, Department of Earth and Planetary Sciences, Knoxville, TN, United States, Ashley R Manning-Berg, University of Tennessee at Chattanooga, Biology, Geology, and Environmental Science, Chattanooga, United States, Geoffrey J Gilleaudeau, George Mason University, Department of Atmospheric, Oceanic, and Earth Sciences, Fairfax, United States and Julie K Bartley, Gustavus Adolphus College, St. Peter, MN, United States
PG12A-04
Trends in Nutrient Supply, Productivity and Atmosphere Oxygenation through the Boring Billion (35861)
Indrani Mukherjee1, Ross Raymond Large1 and Leonid V Danyushevsky2, (1)University of Tasmania, Hobart, Australia, (2)CODES, University of Tasmania, Hobart, TAS, Australia
PG12A-05
Sedimentology and Geochemistry of a 1.4 Ga Continental Playa System, the Lower Sibley Group, Northwestern Ontario: Implications for the Mesoproterozoic Hydrosphere and Atmosphere (34386)
Philip William Fralick, Lakehead University, Department of Geology, Thunder Bay, ON, Canada and Riku T Metsaranta, Ontario Geological Survey, Sudbury, ON, Canada
PG12A-06
Deep-water Seep-related Carbonate Mounds: Implications for Seawater and Vent Fluid Geochemistry in the Mesoproterozoic Borden Basin, Nunavut (36826)
Katherine Elizabeth Hahn1, Elizabeth Turner1 and Balz Samuel Kamber2, (1)Laurentian University, Sudbury, ON, Canada, (2)Trinity College Dublin, Dublin, Ireland
PG12A-08
New Meso-Neoproterozoic Paleomagnetic Results from the Congo-Sao Francisco Craton (36810)
Tierney E Larson1, David A Evans2, Richard E Hanson3, Mandy Hofmann4, Ulf Linnemann4 and Ian W D Dalziel5, (1)Yale University, New Haven, CT, United States, (2)Yale University, Department of Earth and Planetary Sciences, New Haven, CT, United States, (3)Texas Christian University, Fort Worth, TX, United States, (4)Museum of Mineralogy and Geology, Senckenberg Natural History Collections, Dresden, Germany, (5)University of Texas at Austin, Institute for Geophysics, Austin, TX, United States
See more of: Precambrian Geology