T038
North Atlantic Cenozoic Realm and Analogous Regions: New Advances in Understanding

Session ID#: 82661

Session Description:
Enormous progress has recently been made in unravelling the Cenozoic tectonics, breakup and structure of the North Atlantic Realm via ambitious geological and geophysical studies, both land and marine. Cross-disciplinary integration of results is radically improving knowledge continental breakup, passive margins, continental crust in the oceans, ocean-ridge evolution and the Wilson Cycle concept. These advances have far-reaching implications for other regions, e.g., the South Atlantic, Indian and Pacific Oceans, suggesting the possibility of generic models for processes and structures in all oceans. This session will host cross-disciplinary presentations to stimulate new, testable hypotheses. Contributions are invited that bear on the history and present state of the Cenozoic North Atlantic Realm, including the influence of pre-existing structure (see Session 82304) and/or relevant studies from other regions. All disciplines are welcomed including terrestrial and marine geophysics, numerical modelling, structural geology, igneous petrology, stratigraphy and tectonics, particularly integrating cross-disciplinary work.
Index Terms:

3035 Midocean ridge processes [MARINE GEOLOGY AND GEOPHYSICS]
3038 Oceanic plateaus and microcontinents [MARINE GEOLOGY AND GEOPHYSICS]
8105 Continental margins: divergent [TECTONOPHYSICS]
8415 Intra-plate processes [VOLCANOLOGY]

Primary Convener:  Gillian R Foulger, University of Durham, Department of Earth Sciences, Durham, United Kingdom
Conveners:  Armann Hoskuldsson, University of Iceland, Faculty of Earth Sciences, Reykjavik, Iceland, Romain Meyer, Centre for Gebiology, Bergen, Norway and Jordan Jerad John Phethean, University of Durham, Durham, United Kingdom
Primary Liaison:  Gillian R Foulger, University of Durham, Department of Earth Sciences, Durham, United Kingdom
 
Controls on Ridge Segmentation and Transform Fault Birth, Evolution and Death along the Hotspot-Influenced Reykjanes Ridge Flanks: First Results of the R/V Armstrong AR35-04 Cruise (485009)
Fernando Martinez1, Armann Hoskuldsson2, Richard N Hey1, Daniel Thorhallsson3 and AR35-04 Science Party, (1)University of Hawaii at Manoa, HIGP/SOEST, Honolulu, HI, United States, (2)University of Iceland, Faculty of Earth Sciences, Reykjavik, Iceland, (3)University of Hawaii at Manoa, Honolulu, HI, United States
 
Stress and deformation analysis in the Norwegian Barents Sea in relation to Paleogene transpression along the Greenland-Eurasia plate boundary (487917)
Sebastien Gac1, Alexander Minakov2, Grace E Shephard2, Jan Inge Faleide2 and Sverre Planke3, (1)University of Oslo, Oslo, Norway, (2)University of Oslo, Centre for Earth Evolution and Dynamics (CEED), Oslo, Norway, (3)Volcanic Basin Petroleum Rsch, Oslo, Norway
 
Evolution of Reykjanes ridge and Iceland, has the Reykjanes ridge ever met Kolbeinsey ridge? (494608)
Armann Hoskuldsson, University of Iceland, Nordic Volcanological Center, Institute of Earth Sciences, Reykjavik, Iceland, Fernando Martinez, Univ of Hawaii-SOEST/HIGP, Honolulu, HI, United States and Richard N Hey, University of Hawaii at Manoa, HIGP/SOEST, Honolulu, HI, United States
 
Investigating the tectonic evolution of Baffin Bay, northern Canada, using a combination of constrained 3-D gravity inversion and deformable plate tectonic models (505649)
J.Kim Welford, Memorial University of Newfoundland, St John's, NL, Canada, Alexander Peace, McMaster University, School of Geography and Earth Sciences, Hamilton, ON, Canada, Meixia Geng, Memorial University of Newfoundland, Earth Sciences, St John's, NF, Canada; Khalifa University, Department of Earth Sciences, Abu Dhabi, United Arab Emirates, Sonya A Dehler, Natural Resources Canada, Geological Survey of Canada, Calgary, AB, Canada and Kate Dickie, Natural Resources Canada, Geological Survey of Canada, Dartmouth, Canada
 
Tectonic Inheritance and Seismicity in the Southeastern United States Rifted Margin (509023)
Rachel E Marzen, Columbia University of New York, Palisades, NY, United States, James B Gaherty, Columbia University in the City of New York, Lamont-Doherty Earth Observatory, Palisades, NY, United States and Donna J Shillington, Lamont -Doherty Earth Observatory, Palisades, NY, United States
 
Tectonic Reconfigurations of the Reykjanes Ridge: Basement Morphology, Gravity, Magnetics and Sedimentary Structures Along the Ridge Flanks. (511113)
Daniel Thorhallsson, University of Hawaii at Manoa, Honolulu, HI, United States, Fernando Martinez, Univ of Hawaii-SOEST/HIGP, Honolulu, HI, United States, Richard N Hey, University of Hawaii at Manoa, HIGP/SOEST, Honolulu, HI, United States and Armann Hoskuldsson, University of Iceland, Faculty of Earth Sciences, Reykjavik, Iceland
 
Anomalous Topography, Bathymetry, Crust and Mantle in the North Atlantic Region (515033)
Hans Thybo, Istanbul Technical University, Eurasia Institute of Earth Sciences, Maslak, Turkey; University of Oslo, Centre for Earth Evolution and Dynamics, Oslo, Norway and Irina M Artemieva, Stanford University, Stanford, United States
 
THE GREENLAND-ICELAND-FAROE RIDGE IS CONTINENTAL (515403)
Gillian R Foulger1, Anthony G Doré2, C Henry Emeleus3, Dieter Franke4, Laurent Geoffroy5, Laurent Gernigon6, Richard N Hey7, Robert Holdsworth1, Malcolm Hole8, Armann Hoskuldsson9, Bruce R Julian10, Nick Kusznir11, Fernando Martinez12, Kenneth J W McCaffrey13, James H Natland14, Alexander Peace15, Kenni Dinesen Petersen16, Christian Schiffer17, Randell Stephenson18 and Martyn S. Stoker19, (1)University of Durham, Department of Earth Sciences, Durham, United Kingdom, (2)Statoil, London, United Kingdom, (3)Durham University, Department of Earth Sciences, Durham, United Kingdom, (4)BGR Federal Institute for Geosciences and Natural Resources, Hannover, Germany, (5)IUEM Institut Universitaire Européen de la Mer, Plouzané, France, (6)Geological Survey of Norway, Trondheim, Norway, (7)University of Hawaii at Manoa, HIGP/SOEST, Honolulu, HI, United States, (8)University of Aberdeen, School of Geosciences, Aberdeen, United Kingdom, (9)University of Iceland, Faculty of Earth Sciences, Reykjavik, Iceland, (10)USGS California Water Science Center Menlo Park, Menlo Park, CA, United States, (11)University of Liverpool, Liverpool, United Kingdom, (12)Univ of Hawaii-SOEST/HIGP, Honolulu, HI, United States, (13)University of Durham, Durham, United Kingdom, (14)RSMAS/MGS, University of Miami, Miami, FL, United States, (15)McMaster University, School of Geography and Earth Sciences, Hamilton, ON, Canada, (16)Aarhus University, Department of Geoscience, Aarhus, Denmark, (17)Uppsala University, Aarhus C, Denmark, (18)University of Aberdeen, Aberdeen, United Kingdom, (19)Australian School of Petroleum, University of Adelaide, Adelaide, Australia
 
Enigmatic crustal structure of the Greenland-Iceland Ridge, the Iceland hotspot track (Invited) (527039)
Jun Korenaga, Yale University, New Haven, CT, United States
 
Crustal fragmentation, magmatism, and the diachronous opening of the Norwegian-Greenland Sea (547763)
Laurent Gernigon, Geological Survey of Norway, Trondheim, Norway, Dieter Franke, BGR Federal Institute for Geosciences and Natural Resources, Hannover, Germany, Laurent Geoffroy, IUEM Institut Universitaire Européen de la Mer, Plouzané, France, Christian Schiffer, Uppsala University, Aarhus C, Denmark, Gillian R Foulger, University of Durham, Department of Earth Sciences, Durham, United Kingdom and Martyn S. Stoker, University of Adelaide, Australian School of Petroleum, Adelaide, SA, Australia
 
The Influence of Crustal Structure and Multiphase Magmatism on the Evolution of the Hatton Rifted Continental Margin, Offshore Ireland, Using Seismic Reflection and Potential Field Methods (579119)
Laura Bérdi1,2, Manel Prada3, Brian O'Reilly1,2, Patrick Shannon2,4 and Peter Haughton2,4, (1)Dublin Institute for Advanced Studies, Dublin, Ireland, (2)Irish Centre for Research in Applied Geosciences (iCRAG), Dublin, Ireland, (3)ICM-CSIC, Barcelona-CSI, Geosciences, Barcelona, Spain, (4)University College Dublin, School of Earth Sciences, Dublin, Ireland
 
PALEO-THERMAL GRADIENTS DISTRIBUTION ACROSS AN INVERTED HYPER-THINNED RIFT : EXAMPLE OF THE MAULEON BASIN (WESTERN PYRENEES - FRANCE) (595120)
Thierry Baudin1, Nicolas Saspiturry2, Abdeltif Lahfid1 and Laurent Guillou-Frottier1, (1)BRGM, Orléans, France, (2)Université Bordeaux Montaigne, Bordeaux, France
 
Pangaea dispersal and Large Igneous Provinces: Cause or effect? (607270)
Jordan Phethean, University of Derby, Derby, United Kingdom, Alexander Peace, McMaster University, School of Geography and Earth Sciences, Hamilton, ON, Canada, Dieter Franke, BGR Federal Institute for Geosciences and Natural Resources, Hannover, Germany, Gillian R Foulger, University of Durham, Department of Earth Sciences, Durham, United Kingdom, Christian Schiffer, Uppsala University, Aarhus C, Denmark, J.Kim Welford, Memorial University, St John's, NL, Canada, Greg McHone, 9 Dexters Lane, New Brunswick, Canada, Sergio Rocchi, ARRAY(0xb710d9dc), Pisa, Italy, Michael Schnabel, BGR, Hannover, Germany and Anthony G Doré, Statoil, London, United Kingdom
 
Propagating Rifts and Migrating Transform Faults in the Thick Oceanic Crust of Iceland (609807)
Jeffrey Karson, Syracuse University, Earth Sciences, Syracuse, NY, United States
 
Thermal Evolution of the Aquitaine Basin (France). New Constraints from an Analytical and Modeling Approach. (612385)
Abdeltif Lahfid and Thierry Baudin, BRGM, Orléans, France
 
High-TiO2 Basalts at Iceland and the North Atlantic Igneous Province (614836)
James H Natland, University of Miami, RSMAS/MGS, Miami, FL, United States, Malcolm Hole, University of Aberdeen, School of Geosciences, Aberdeen, United Kingdom and Gillian R Foulger, University of Durham, Department of Earth Sciences, Durham, United Kingdom
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