T33E:
The Evolution and Architecture of Rifts and Rifted Passive Margins: From Mantle Dynamics to Surface Processes Posters

Submit an Abstract to this Session



Session ID#: 23397

Session Description:
The formation of rifted continental margins by extension of continental lithosphere leading to seafloor spreading is a complex and still poorly understood component of the plate tectonic cycle. New observations and modelling allow us to investigate the underlying processes. Key questions to be resolved include 1) factors controlling geometry and crustal architecture or rifted margins, 2) controls on the structural style of rift and passive margin formation 3) factors controlling the 3-dimensional geometry of rifts and passive margins, 4) processes responsible for anomalous vertical motions during basin evolution, 5) fundamental controls on the magmatic or a-magmatic nature of rifts and passive margins, 6) interaction between surface processes, tectonics, and climate during rift-passive margin evolution. We encourage abstracts that offer new insights into crustal and lithospheric architecture and processes underlying rift-passive margin formation as well as smaller scale studies of individual sedimentary basins, using constraints from observations and modelling.
Primary Convener:  Ritske S Huismans, University of Bergen, Department of Earth Science, Bergen, Norway
Conveners:  Magdalena Scheck-Wenderoth, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Geosystems, Potsdam, Germany and Luc Lavier, University of Texas at Austin, Institute for Geophysics, Austin, TX, United States
Chairs:  Luc Lavier, University of Texas at Austin, Institute for Geophysics, Austin, TX, United States, Magdalena Scheck-Wenderoth, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Geosystems, Potsdam, Germany and Ritske S Huismans, University of Bergen, Department of Earth Science, Bergen, Norway
OSPA Liaison:  Ritske S Huismans, University of Bergen, Department of Earth Science, Bergen, Norway

Cross-Listed:
  • DI - Study of the Earth's Deep Interior
  • S - Seismology
  • V - Volcanology, Geochemistry and Petrology
Index Terms:

8105 Continental margins: divergent [TECTONOPHYSICS]
8109 Continental tectonics: extensional [TECTONOPHYSICS]
8169 Sedimentary basin processes [TECTONOPHYSICS]
8178 Tectonics and magmatism [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Architecture of ductile-type passive margins: Geological constraints from the inverted Cretaceous basin of the North-Pyrenean Zone (‘Chaînons Béarnais’, Western Pyrenees) (219767)
Benjamin Corre1, Yves Lagabrielle1, Pierre Labaume2, Abdeltif Lahfid3, Philippe Boulvais1, Géraldine Bergamini1, Serge Fourcade1, Camille Noël Clerc4 and Riccardo Asti1, (1)Géosciences Rennes, Rennes, France, (2)Géosciences Montpellier, Montpellier, France, (3)BRGM, Orléans, France, (4)Université de la Nouvelle-Calédonie, Institut des Sciences Exactes et Appliquées, Nouméa, New Caledonia
3D Thermo-Mechanical Models of Plume-Lithosphere Interactions: Implications for the Kenya rift (220001)
Alexander Koptev, University Pierre and Marie Curie Paris VI, ISTEP, Paris, France, Magdalena Scheck-Wenderoth, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Geosystems, Potsdam, Germany and Judith Sippel, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany
Resolving the Subsidence Anomaly of the East Tasman Plateau Using New Insights from the Cascade Seamount, Southwest Tasman Sea (224756)
Sarah L. Vorsanger1, Howie Scher2, Sean Johnson3, Rhiannan Mundana4, Isabel Sauermilch5, Brian Duggan1 and Joanne M Whittaker6, (1)University of South Carolina Columbia, Columbia, SC, United States, (2)University of South Carolina, (3)University of Tasmania, Earth Sciences, Hobart, Australia, (4)University of Tasmania, Hobart, Australia, (5)Institute for Marine and Antarctic Studies, Taroona, TAS, Australia, (6)University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia
Timing of Exhumation of the Mesozoic Blue Nile Rift, Ethiopia: A New Study from Apatite Fission Track Thermochronology (265945)
Nahid D. Gani, Western Kentucky University, Earth, Environmental, and Atmospheric Sciences, Bowling Green, United States and Shelby M. Bowden, Western Kentucky University, Geography and Geology, Bowling Green, KY, United States
Rotation, narrowing and preferential reactivation of brittle structures during oblique rifting (269897)
Guillaume Duclaux1, Ritske S Huismans1 and Dave May2, (1)University of Bergen, Department of Earth Science, Bergen, Norway, (2)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom
Mantle exhumation at magma-poor rifted margin: a competition between frictional shear zones and thermally weakened necking domains. Consequences on time of breakup at Galicia/Newfoundland margins. (291027)
Ritske S Huismans, University of Bergen, Department of Earth Science, Bergen, Norway and Thomas Theunissen, University of Bergen, Earth Science, Bergen, Norway
Lower-crustal metamorphism caused subsidence in Pasco Basin, Washington State (298976)
Jonathan Perry-Houts, University of Oregon, Eugene, OR, United States and Eugene Humphreys, Univ Oregon, Eugene, OR, United States
Interactions between Polygonal Normal Faults and Larger Normal Faults, Offshore Nova Scotia, Canada (301103)
Thi Quan Hoang Pham1, Martha Oliver Withjack2,3 and Bari R Hanafi2,3, (1)Rutgers University New Brunswick, Geological Sciences, New Brunswick, NJ, United States, (2)Rutgers University New Brunswick, New Brunswick, NJ, United States, (3)Rutgers University New Brunswick, Earth and Planetary Sciences, New Brunswick, NJ, United States

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