T54C:
Subduction Zone Processes at the Hikurangi Margin, New Zealand II


Submit an Abstract to this Session


Session ID#: 56976

Session Description:
The Hikurangi subduction zone offshore New Zealand's North Island exhibits pronounced along-strike changes in margin characteristics that make it an outstanding natural laboratory to investigate a wide range of fundamental subduction processes. This unique aspect of the subduction zone has sparked a plethora of new onshore and offshore geological and geophysical investigations. These experiments are helping to unravel the physical processes that control subduction plate boundary geodynamics and deformation.  Recent efforts include scientific ocean drilling, multiple active and passive seismic experiments, seafloor geodetic deployments, and paleoseismic investigations.  We welcome submissions that advance understanding of the Hikurangi subduction zone, including processes that underlie slow slip events and earthquake cycle behavior, volcanism and intra-arc rifting, volatile and fluid cycling, long-term subduction margin evolution, and geohazards associated with the plate boundary. Modeling studies, and comparative studies with other subduction zones to elucidate factors controlling subduction zone processes are also very welcome.
Primary Convener:  Laura M Wallace, GNS Science, Lower Hutt, New Zealand; GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Conveners:  Rebecca E Bell, Imperial College London, Department of Earth Science and Engineering, London, United Kingdom, Kimihiro Mochizuki, University of Tokyo, Earthquake Research Institute, Bunkyo-ku, Japan and Demian M Saffer, Pennsylvania State University, University Park, United States
Primary Liaison:  Laura M Wallace, University of Texas at Austin, Institute for Geophysics, Austin, United States
Chairs:  Rebecca E Bell, Imperial College London, Department of Earth Science and Engineering, London, United Kingdom and Demian M Saffer, Pennsylvania State University, University Park, United States
OSPA Liaison:  Rebecca E Bell, Imperial College London, Department of Earth Science and Engineering, London, United Kingdom

Cross-Listed:
  • G - Geodesy
  • NH - Natural Hazards
  • S - Seismology
Index Terms:

1207 Transient deformation [GEODESY AND GRAVITY]
7230 Seismicity and tectonics [SEISMOLOGY]
8170 Subduction zone processes [TECTONOPHYSICS]
8185 Volcanic arcs [TECTONOPHYSICS]

Abstracts Submitted to this Session:

Width of imbricated thrust blocks and the strength of accretionary wedges (423935)
Garrett Ito, University of Hawaii, Department of Earth Sciences, Honolulu, United States and Gregory F Moore, University of Hawaii at Manoa, Earth Sciences, Honolulu, United States
Early Onset of Uplift along the Hikurangi Margin: Stratigraphy and Provenance of the Deep-Water Great Marlborough Conglomerate, Lower Miocene Waima Formation, South Island, New Zealand (444979)
Jared Thomas Gooley1, Greg H Browne2 and Stephan A Graham1, (1)Stanford University, Stanford, CA, United States, (2)GNS Science, Lower Hutt, New Zealand
Drilling and Coring the Northern Hikurangi Subduction Margin to Unlock the Secrets of Slow Slip: International Ocean Discovery Program Expeditions 372 and 375 (Invited) (376220)
Philip Barnes, National Institute of Water & Atmospheric Research, Wellington, New Zealand, Demian M Saffer, Pennsylvania State University, University Park, United States, Laura M Wallace, GNS Science, Lower Hutt, New Zealand, Ingo Andreas Pecher, University of Auckland, Auckland, New Zealand, Katerina E Petronotis, Texas A&M University, International Ocean Discovery Program, College Station, United States, Leah LeVay, Texas A&M University, International Ocean Discovery Program, College Station, TX, United States and Expedition 372 Scientists, Expedition 375 Scientists
Elastic moduli and physical properties of fault rock and protolith associated with SSEs at the Northern Hikurangi margin, NZ (433303)
Demian M Saffer, The University of Texas at Austin, Austin, United States, Rebecca E Bell, Imperial College London, Department of Earth Science and Engineering, London, United Kingdom, Philip Barnes, National Institute of Water & Atmospheric Research, Wellington, New Zealand, Laura M Wallace, University of Texas at Austin, Institute for Geophysics, Austin, United States, Hiroko Kitajima, Texas A&M University, Center for Tectonophysics and the Department of Geology & Geophysics, College Station, United States, Gregory F Moore, University of Hawaii at Manoa, Earth Sciences, Honolulu, United States, Shuoshuo Han, University of Texas at Austin, Institute for Geophysics, Austin, TX, United States, Ingo Andreas Pecher, University of Auckland, Auckland, New Zealand, Katerina E Petronotis, Texas A&M University, International Ocean Discovery Program, College Station, United States, Leah LeVay, Texas A&M University, International Ocean Discovery Program, College Station, TX, United States and IODP Expedition 372 and 375 Scientists
Borehole stress indicators across the Hikurangi Subduction Margin: Preliminary insights from IODP Expedition 372 (360470)
David D McNamara, National University of Ireland, Galway, Ireland, Hung-Yu Wu, Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology, Kanagawa, Japan, Hikweon Lee, KIGAM Korea Institute of Geoscience and Mineral Resources, Daejeon, Korea, Republic of (South), Laura M Wallace, University of Texas at Austin, Institute for Geophysics, Austin, United States, Gil Lee, National Institute of Meteorological Research, Seogwipo-si, Korea, Republic of (South), Katja U Heeschen, Geozentrum Hannover - BGR, Telegrafenberg, Germany, Judith Elger, GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, Demian M Saffer, Pennsylvania State University, University Park, United States, Philip Barnes, National Institute of Water & Atmospheric Research, Wellington, New Zealand, Ingo Andreas Pecher, University of Auckland, Auckland, New Zealand and IODP Expedition 372 & 375 Scientists
Brittle-Ductile Deformation and Fault Slip Behavior of a Shallow Subduction Thrust, Hikurangi Margin, New Zealand (383420)
Ake Fagereng, Cardiff University, Cardiff, CF24, United Kingdom, Heather M Savage, University of California Santa Cruz, Earth and Planetary Sciences, Santa Cruz, United States, Julia Morgan, Rice University, Earth, Environmental and Planetary Sciences, Houston, TX, United States, Maomao Wang, Hohai University, Nanjing, China, Francesca Meneghini, University of Pisa, Pisa, Italy, Philip Barnes, National Institute of Water & Atmospheric Research, Wellington, New Zealand, Rebecca E Bell, Imperial College London, Department of Earth Science and Engineering, London, United Kingdom, Hiroko Kitajima, Texas A&M University, Center for Tectonophysics and the Department of Geology & Geophysics, College Station, United States, David D McNamara, GNS Science-Institute of Geological and Nuclear Sciences Ltd, Lower Hutt, New Zealand, Demian M Saffer, Pennsylvania State University, University Park, United States, Laura M Wallace, University of Texas at Austin, Institute for Geophysics, Austin, United States, Ingo Andreas Pecher, University of Auckland, Auckland, New Zealand, Katerina E Petronotis, Texas A&M University, International Ocean Discovery Program, College Station, United States, Leah LeVay, Texas A&M University, International Ocean Discovery Program, College Station, TX, United States and IODP Expedition 372/375 Scientists
Geochemical Constraints on Fluid-Rock Reactions, Fluid Sources, and Flow Pathways Along the IODP Expedition 375 Transect; Northern Hikurangi Margin (458564)
Evan A Solomon, University of Washington, School of Oceanography, Seattle, United States, Andre Huepers, University of Bremen, MARUM – Center for Marine Environmental Sciences, Bremen, Germany, Min Luo, Shanghai Ocean University, College of Marine Sciences, Lingang, China, Pierre R Malie, Université Montpellier, Geosciences Montpellier Laboratory, Montpellier, France, Demian M Saffer, Pennsylvania State University, University Park, United States, Marta E Torres, Oregon State Univ, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, Laura M Wallace, University of Texas at Austin, Institute for Geophysics, Austin, United States, Katerina E Petronotis, Texas A&M University, International Ocean Discovery Program, College Station, United States, Philip Barnes, National Institute of Water & Atmospheric Research, Wellington, New Zealand, Ingo Andreas Pecher, University of Auckland, Auckland, New Zealand, Leah LeVay, Texas A&M University, International Ocean Discovery Program, College Station, TX, United States and IODP Expedition 375 and Expedition 372 Scientists
RESPONSE OF GAS HYDRATE SYSTEMS TO SUBDUCTION-ZONE PROCESSES ON THE NORTHERN HIKURANGI MARGIN, NEW ZEALAND (387027)
Ingo Andreas Pecher1, Paul Oluwunmi2, Adnan Djeffal2, Nathan L Bangs3, Gareth James Crutchley4, Joshu J Mountjoy5, Heinrich W Villinger6, Philip Barnes7, Katja U Heeschen8, Brandon Dugan9, Matthew T Reagan10, George J Moridis11, Rosalind Archer1, Demian M Saffer12, Laura M Wallace13, Leah LeVay14, Katerina E Petronotis15 and Expedition 372 Scientists, Expedition 375 Scientists , (1)University of Auckland, Auckland, New Zealand, (2)University of Auckland, School of Environment, Auckland, New Zealand, (3)Univ Texas, Institute for Geophysics, Austin, United States, (4)GNS Science-Institute of Geological and Nuclear Sciences Ltd, Lower Hutt, New Zealand, (5)Earth Sciences New Zealand, Wellington, New Zealand, (6)Univ Bremen, Bremen, Germany, (7)National Institute of Water & Atmospheric Research, Wellington, New Zealand, (8)Geozentrum Hannover - BGR, Telegrafenberg, Germany, (9)Colorado School of Mines, Department of Geophysics, Golden, CO, United States, (10)Lawrence Berkeley National Laboratory, Berkeley, CA, United States, (11)Lawrence Berkeley National Laboratory, Berkeley, United States, (12)Pennsylvania State University, University Park, United States, (13)University of Texas at Austin, Institute for Geophysics, Austin, United States, (14)Texas A&M University, International Ocean Discovery Program, College Station, TX, United States, (15)Texas A&M University, International Ocean Discovery Program, College Station, United States

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