OS22C:
Interplay between Tectonics, Oceanography, Hydrothermal Circulation, and Microbial Processes in the Gulf of California I


Session ID#: 9053

Session Description:
The Gulf of California is a marginal rift basin, characterized by active seafloor spreading and rapid deposition of organic‐rich sediments from highly productive overlying waters. Seafloor spreading began at ~6 Ma and has since produced ~220 km of new igneous crust; the juxtaposition of emplaced volcanic sills originating at the spreading center and sedimentary sequences of variable thickness has resulted in a dynamic subseafloor environment. This interdisciplinary session explores the Gulf of California as a model system to understand the complex interplay between tectonic processes that create conditions for sediment deposition; oceanographic processes that control modern biogenic and terrigenous sedimentation; high-resolution paleoceanographic reconstructions of climate change in the Pacific and the Mesoamerican region; sill/sediment interactions that drive thermogenic sedimentary alteration and hydro-thermal circulation; and microbial processes that represent a source and sink for carbon compounds within the sediment pile, water column and potentially the atmosphere.
Primary Convener:  Ivano W Aiello, Moss Landing Marine Laboratories, Moss Landing, United States
Conveners:  Ana Christina Ravelo, University of California-Santa Cruz, Santa Cruz, CA, United States, Carlos A Mortera-Gutierrez, Universidad Nacional Autonoma de Mexico, Instituto de Geofisica, Mexico City, Mexico and Ivano W Aiello, Moss Landing Marine Laboratories, Moss Landing, United States
Chairs:  Ana Christina Ravelo, University of California-Santa Cruz, Santa Cruz, CA, United States and Ivano W Aiello, Moss Landing Marine Laboratories, Moss Landing, United States
OSPA Liaison:  Ivano W Aiello, Moss Landing Marine Laboratories, Moss Landing, United States

Cross-Listed:
  • B - Biogeosciences
  • PP - Paleoceanography and Paleoclimatology
  • T - Tectonophysics
Index Terms:

0428 Carbon cycling [BIOGEOSCIENCES]
3099 General or miscellaneous [MARINE GEOLOGY AND GEOPHYSICS]
4999 General or miscellaneous [PALEOCEANOGRAPHY]
8178 Tectonics and magmatism [TECTONOPHYSICS]

Abstracts Submitted to this Session:

The Sills of Guaymas Basin, Gulf of California: Their Distribution and Seismic Estimates of Their Thickness and Alteration of Intruded Sediments (Invited) (69644)
Daniel Lizarralde1, Helen Feng2, Samuel A Soule1 and Carlos Mortera3, (1)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (2)Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, MA, United States, (3)UNAM National Autonomous University of Mexico, Instituto de Geofisica, Mexico City, Mexico
Biogeochemical and Microbial Survey of Gravity Cores from the Guaymas Basin and Sonora Margin (Invited) (60776)
Andrew Buckley1, Luke J Mckay1, Jeff Chanton2, Christian Hensen3, Tiffany Turner1, Ivano W Aiello4, Ana Christina Ravelo5, Carlos Mortera6 and Andreas Teske7, (1)University of North Carolina at Chapel Hill, Chapel Hill, NC, United States, (2)Florida State University, Department of Earth, Ocean & Atmospheric Science, Tallahassee, FL, United States, (3)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (4)Moss Landing Marine Laboratories, Moss Landing, United States, (5)University of California Santa Cruz, Ocean Sciences, Santa Cruz, CA, United States, (6)UNAM National Autonomous University of Mexico, Instituto de Geofisica, Mexico City, Mexico, (7)The University of North Carolina at Chapel Hill, Chapel Hill, United States
Seafloor Hydrothermal Activity in the Southern Gulf of California (71489)
Jennifer Brophy Paduan1, David A Clague2, David W Caress2, Lonny Lundsten2, Robert A Zierenberg3, Giancarlo Troni4, Charles Geoffrey Wheat5 and Ronald Michael Spelz6, (1)Monterey Bay Aquarium Res Inst, Moss Landing, CA, United States, (2)Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States, (3)University of California Davis, Earth and Planetary Sciences, Davis, CA, United States, (4)Monterey Bay Aquarium Research Institute, Watsonville, CA, United States, (5)University of Alaska Fairbanks, Fairbanks, AK, United States, (6)Facultad de Ciencias Marinas, Universidad Autónoma de Baja California, Geología, Ensenada, BJ, Mexico
Shallow Water Hydrothermal Vents in the Gulf of California: Natural Laboratories for Multidisciplinary Research (86447)
Matthew Forrest, Scripps Institution of Oceanography, La Jolla, CA, United States, David R Hilton, University of California San Diego, Earth Sciences, La Jolla, CA, United States, Roy E Price, Stony Brook University, School of Marine and Atmospheric Sciences, Stony Brook, NY, United States and Justin T Kulongoski, USGS California Water Science Center San Diego, San Diego, CA, United States
Evolution of Surface Water Conditions in the Gulf of California During the Past 2000 years: Implications for the North American Monsoon (Invited) (63697)
John Arthur Barron1, David Bukry1, Jason A Addison2, Mary McGann1, Valerie Schwartz1, John P McGeehin3 and Erin McClymont4, (1)USGS, Menlo Park, CA, United States, (2)USGS, Geology, Minerals, Energy, & Geophysics Science Center, Menlo Park, CA, United States, (3)U.S. Geological Survey, Reston, VA, United States, (4)University of Durham, Durham, United Kingdom
Past variability of the North American Monsoon: ultrahigh resolution records from the lower Gulf of California for the last 6 Ka (Invited) (63727)
Juan Carlos Herguera1, Cinthya Nava Fernandez1, Gladys Bernal2 and Charles K Paull3, (1)CICESE Center for Scientific Research and Higher Education, Oceanography, Ensenada, Mexico, (2)Universidad Nacional de Colombia, Medellin, Ciencias del Mar, Medellin, Colombia, (3)Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States
AUV mapping and targeted ROV sampling on the Alarcon Rise (74448)
David A Clague1, David W Caress1, Brian M Dreyer2, Jennifer Brophy Paduan1, Lonny Lundsten1, Julie A Bowles3, Paterno Castillo4, Rigoberto G. France5, Ryan A Portner6, Ronald M Spelz5 and Robert A Zierenberg7, (1)Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States, (2)University of California Santa Cruz, Santa Cruz, CA, United States, (3)University of Wisconsin Milwaukee, Geosciences, Milwaukee, WI, United States, (4)University of California San Diego, Scripps Institution of Oceanography, La Jolla, CA, United States, (5)Universidad Autonoma de Baja California, Ensenada, Mexico, (6)Brown University, Providence, RI, United States, (7)University of California Davis, Earth and Planetary Sciences, Davis, CA, United States
Variability on the Hypoxic Conditions in the Northwestern Region of the Baja California Peninsula (84719)
Hector Bustos-Serrano, Organization Not Listed, Washington, DC, United States

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