Preparation and injection of fluid tracers during IODP Expedition 327, eastern flank of Juan de Fuca Ridge

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doi: 10.2204/iodp.proc.327.108.2011
Author(s): Fisher, Andrew; Cowen, James P.; Wheat, C. Geoffrey; Clark, J. F.
Integrated Ocean Drilling Program, Expedition 327 Scientists, College Station, TX
Author Affiliation(s): Primary:
University of California, Santa Cruz, Earth and Planetary Sciences Department, Santa Cruz, CA, 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
University of California-Santa Barbara, 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, 26p. Publisher: IODP Management International, Washington, DC, United States. ISSN: 1930-1014
Note: In English. 43 refs.; illus., incl. 2 tables, sketch map
Summary: Multiple tracers were pumped into upper basement around Hole U1362B during Integrated Ocean Drilling Program (IODP) Expedition 327 as part of a single- and cross-hole tracer experiment on the eastern flank of Juan de Fuca Ridge. Tracers injected were sulfur hexafluoride (dissolved gas), cesium chloride hexahydrate, erbium chloride, and holmium chloride hexahydrate (solutes), and several sizes of fluorescent microspheres and fluorescent-stained microbes filtered from surface seawater (particles). Tracers were injected as part of a 24 h pumping experiment intended to test a large volume of basement rock around Hole U1362B. We report on the design of the tracer experiment, methods used to prepare and inject tracers using shipboard mud and cement pump systems, and tools developed to permit shipboard and downhole sampling of injectate. Shore-based analysis of injectate samples will be essential for interpretation of long-term samples collected from subseafloor borehole observatories ("CORKs"). Borehole samples are being collected continuously within a long-term CORK installed in Hole U1362B after tracer injection was complete and within similar CORK systems installed in nearby boreholes before and during Expedition 327. CORK servicing expeditions are currently planned for summer 2011 and 2012. These expeditions and additional work in subsequent years will provide data and samples that will permit a quantitative assessment of tracer transport behavior in the upper ocean crust.
Year of Publication: 2011
Research Program: IODP Integrated Ocean Drilling Program
ODP Ocean Drilling Program
Key Words: 21 Hydrogeology and Hydrology; Basement; Boreholes; CORK; Circulation; Circulation Obviation Retrofit Kit; Crust; East Pacific; Endeavour Ridge; Expedition 301; Expedition 327; Experimental studies; Flows; Fluid injection; Fluid phase; Ground water; IODP Site U1301; IODP Site U1362; Integrated Ocean Drilling Program; Juan de Fuca Ridge; Monitoring; North Pacific; Northeast Pacific; ODP Site 1026; Ocean Drilling Program; Oceanic crust; Pacific Ocean; Pressure; Pumping; Tracers
Coordinates: N474500 N474600 W1274600 W1274600
N474600 N474600 W1274700 W1274700
N474556 N474556 W1274526 W1274526
Record ID: 2011080415
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