T32C:
Origin, Architecture, and Dynamics of Extensional Basins I

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Session ID#: 16584

Session Description:
This session presents recent advances in our understanding of the formation and evolution of sedimentary basins, from rifts and passive margins to cratonic basins, within which rests more than a hundred million years of geological history. This session will present studies from surface to deep: sedimentology to seismology (and all the disciplines in between). The accumulated sediments, the petrology and chemistry of basaltic rocks and the present day seismic structure of the crust and upper mantle are partial records of this evolving system. In this session we aim to bring together research that generates, models and interprets these various observational constraints. Key open questions include: What factors decide whether break-up takes place? What is the role of mantle plumes and volcanism? How do extensional systems link and record climate changes, erosion and deposition? What causes localization of rifting, segment boundaries, transfer zones, and pull apart basins?
Primary Convener:  John J Armitage, Institute de Physique du Globe de Paris, Paris, France
Conveners:  Jolante van Wijk, New Mexico Institute of Mining and Technology, Earth & Environmental Science, Socorro, United States, Carolina Pagli, University of Sydney, EarthByte Group, Sydney, Australia and David Ferguson, Harvard University, Earth and Planetary Sciences, Cambridge, MA, United States
Chairs:  Carolina Pagli, University of Sydney, EarthByte Group, Sydney, Australia and John J Armitage, Institute de Physique du Globe de Paris, Paris, France
OSPA Liaison:  Jolante van Wijk, New Mexico Institute of Mining and Technology, Earth & Environmental Science, Socorro, United States

Cross-Listed:
  • EP - Earth and Planetary Surface Processes
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

8109 Continental tectonics: extensional [TECTONOPHYSICS]
8120 Dynamics of lithosphere and mantle: general [TECTONOPHYSICS]
8169 Sedimentary basin processes [TECTONOPHYSICS]
8178 Tectonics and magmatism [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Mesozoic­ and Cenozoic Tectono-depositional History of the Southwestern Chukchi Borderland: Implications of Pre-Brookian Passive-margin Slope Deposits for the Jurassic Extensional Deformation of the Amerasia Basin, Arctic Ocean (137225)
Ibrahim Ilhan and Bernard Coakley, University of Alaska Fairbanks, Fairbanks, AK, United States
Relating modes of extension to the spatial and temporal distribution of major sediment unconformities at passive margins (172977)
Miguel Andres-Martinez, University of Bremen, Bremen, Germany, Marta Perez-Gussinye, Royal Holloway University of London, Department of Earth Sciences, Egham, United Kingdom, John J Armitage, Institut de Physique du Globe de Paris, Paris, France and Jason P Morgan, Royal Holloway University of London, Egham, TW20, United Kingdom
Deep Structure and Subsidence of Parnaíba Cratonic Basin, NE Brazil (139132)
Verónica Rodríguez Tribaldos1, Nicholas J White2, Diogo L.O. Coelho3 and Jordi Julià3, (1)University of Cambridge, Department of Earth Sciences (Bullard Laboratories), Cambridge, United Kingdom, (2)University of Cambridge, Cambridge, United Kingdom, (3)UFRN Federal University of Rio Grande do Norte, Departamento de Geofísica, Natal, Brazil
Gravity Anomalies, Seismic Structure and Subsidence History of the Parnaíba Cratonic Basin, Northeast Brazil (173481)
Brook Tozer1, Anthony Brian Watts2 and Mike Daly1, (1)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, (2)University of Oxford, Earth Sciences, Oxford, United Kingdom
Comparative Riftology: Insights into the Evolution of Passive Continental Margins and Continental Rifts from North America's Failed Midcontinent Rift (151587)
Carol A Stein, University of Illinois Chicago, Department of Earth & Environmental Sciences, Chicago, United States, Seth Stein, Northwestern University, Evanston, IL, United States, Jonas Kley, University of Göttingen, Department of Structural Geology and Geothermics, Göttingen, Germany, G Randy Keller, University of Oklahoma, Norman, OK, United States, Michael Edward Wysession, Washington University in St Louis, Saint Louis, United States, Weisen Shen, Washington Univ, Saint Louis, MO, United States, Tyrone O Rooney, Michigan State University, Department of Earth and Environmental Sciences, East Lansing, MI, United States, Robert Moucha, Syracuse University, Earth Sciences, Syracuse, NY, United States, Andrew W Frederiksen, University of Manitoba, Earth Sciences, Winnipeg, MB, Canada, Fiona Ann Darbyshire, University of Quebec at Montreal UQAM, Centre de recherche GEOTOP, Montreal, QC, Canada and Donna M Jurdy, Northwestern University, Earth and Planetary Science, Evanston, IL, United States
Anomalous Lower Crustal and Surface Features as a Result of Plume-induced Continental Break-up: Inferences from Numerical Models (123486)
Anouk Beniest1,2, Alexander Koptev3 and Sylvie D Leroy3, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)Vrije Universiteit Amsterdam, Amsterdam, Netherlands, (3)University Pierre and Marie Curie Paris VI, ISTEP, Paris, France
Rio Grande Rift: History of Tectonic Opening and Magmatism (142466)
Jolante van Wijk, New Mexico Institute of Mining and Technology, Earth & Environmental Science, Socorro, United States, Gary J Axen, New Mexico Institute of Mining and Technology, Earth and Environmental Science, Socorro, NM, United States and Daniel Koning, New Mexico Bureau of Geology and Mineral Resources, Socorro, United States
Development of extensional step overs within anisotropic systems: Implications for the Rodgers Creek-Hayward fault network (175898)
Jessica McBeck, University of Olso, Oslo, Norway and Michele L Cooke, University of Massachusetts Amherst, Earth, Geographic and Climate Sciences, Amherst, United States

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