Fluid sampling from oceanic borehole observatories; design and methods for CORK activities (1990-2010)

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doi: 10.2204/iodp.proc.327.109.2011
Author(s): Wheat, C. Geoffrey; Jannasch, H. W.; Kastner, M.; Hulme, Samuel M.; Cowen, J.; Edwards, K. J.; Orcutt, B. N.; Glazer, B.
Integrated Ocean Drilling Program, Expedition 327 Scientists, College Station, TX
Author Affiliation(s): Primary:
University of Alaska-Fairbanks, Global Undersea Research Unit, Fairbanks, AK, United States
Other:
Kyoto University, Japan
Texas A&M University, United States
Lamont-Doherty Earth Observatory, United States
University of Miami, United States
University of Hawaii-Manoa, United States
University of Southampton, United Kingdom
Tongji University, China
École Normale Supérieure, France
Arhus Universitet, Denmark
University of Southern California, United States
University of Alaska-Fairbanks, United States
Monterey Bay Aquarium Research Institute, United States
Scripps Institution of Oceanography, United States
Volume Title: Proceedings of the Integrated Ocean Drilling Program; Juan de Fuca Ridge flank hydrogeology; Expedition 327 of the riserless drilling platform from and to Victoria, British Columbia (Canada); Sites U1362, U1301, 1027, and U1363; 5 July-5 September 2010
Volume Author(s): Fisher, Andrew; Tsuji, Takeshi; Petronotis, Katerina; Mrozewski, Stefan; Becker, Keir; Cowen, James P.; Harris, Michelle; Hulme, Samuel M.; Inderbitzen, Katherine; Ji Fuwu; Masui, Reona; Miyamoto, Hiroki; Morvan, Sylvain; Orcutt, Beth; Rutter, Jennifer; Turner, Amanda G.; Wheat, C. Geoffrey; Winslow, Dustin M.
Source: Proceedings of the Integrated Ocean Drilling Program; Juan de Fuca Ridge flank hydrogeology; Expedition 327 of the riserless drilling platform from and to Victoria, British Columbia (Canada); Sites U1362, U1301, 1027, and U1363; 5 July-5 September 2010, Andrew Fisher, Takeshi Tsuji, Katerina Petronotis, Stefan Mrozewski, Keir Becker, James P. Cowen, Michelle Harris, Samuel M. Hulme, Katherine Inderbitzen, Ji Fuwu, Reona Masui, Hiroki Miyamoto, Sylvain Morvan, Beth Orcutt, Jennifer Rutter, Amanda G. Turner, C. Geoffrey Wheat and Dustin M. Winslow; Integrated Ocean Drilling Program, Expedition 327 Scientists, College Station, TX. Proceedings of the Integrated Ocean Drilling Program, Vol.327, 36p. Publisher: IODP Management International, Washington, DC, United States. ISSN: 1930-1014
Note: In English. 58 refs.; illus., incl. 1 table, sketch map
Summary: Subseafloor borehole observatories ("CORKs") are currently the best mechanism by which fluids from subsurface hydrologic zones can be collected to evaluate the composition, evolution, and consequence of fluid circulation in oceanic crust. The fluid sampling capabilities of CORKs have evolved over two decades, spanning the Ocean Drilling Program and Integrated Ocean Drilling Program. The fluid-sampling system for the original CORK design consisted of a single polytetrafluoroethylene (PTFE) tube that connected to a valve at the seafloor and ended at depth in the formation. Through successes and disappointments coupled with community desires and efforts, significant iterations of CORK design and capabilities have led to the development of a range of crustal fluid-sampling systems. These iterations continue today with the development of new borehole capabilities, sensors, and samplers. This paper discusses these developments and transitions, highlighting the pros and cons of various designs, materials, and decisions. Although the evolution of CORK design has taken years because of the infrequency of CORK deployments and sample recovery operations, we as a community are now in a position to report on groundbreaking results that will enhance our understanding of subseafloor hydrogeology, crustal evolution, geochemical fluxes, microbial ecology, and biogeochemical processes, as indicated by the wealth of work referenced herein and by the complexity and flexibility of present and future designs.
Year of Publication: 2011
Research Program: IODP Integrated Ocean Drilling Program
ODP Ocean Drilling Program
Key Words: 21 Hydrogeology and Hydrology; Boreholes; CORK; Circulation Obviation Retrofit Kit; Crust; Design; Development; Dissolved oxygen; Drilling; Fluid phase; Gas hydrates; Ground water; Instruments; Integrated Ocean Drilling Program; Marine drilling; Marine methods; Marine sediments; Observatories; Ocean Drilling Program; Oceanic crust; Oxygen; Sampling; Sediments; Solutes
Record ID: 2011080417
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute.

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