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Contents Title page Publisher's notes Expedition 327 participants Expedition 327 scientists Education and outreach Operational and technical staff Abstract Introduction and background Scientific background Geological setting and earlier work Seismic studies/Site survey data Scientific objectives Site U1362 Site U1301 Site 1027 Site U1363 Education, outreach, and communication objectives Site summaries Site U1362 Site U1301 Site 1027 Site U1363 Education, outreach, and communication summary Preliminary assessment of expedition achievements Site U1362 Site U1301 Site 1027 Site U1363 Education and outreach Operations Transit from Victoria, British Columbia, to Site U1362 Site U1362 Hole U1362A Stage 1 Hole U1362B Stage 1 Hole U1362A Stage 2 Hole U1362B Stage 2 Hole U1362A Stage 3 Hole U1362A wireline logging and packer pumping test Hole U1362A CORK wellhead and casing deployment Hole U1362A CORK instrument string deployment Hole U1362B Stage 3 Hole U1362B 24 h pumping test and tracer injection experiment Hole U1362B CORK wellhead and casing deployment Hole U1362B CORK instrument string deployment Site U1301 Hole 1027C Transit to Site U1363 Hole U1363A Hole U1363B Hole U1363C Hole U1363D Hole U1363E Hole U1363F Hole U1363G Transit to Victoria, British Columbia (Canada) References Tables T1. Operations summary. T2. Hole locations. T3. Hole summary. Figures F1. Map of expedition work area. F2. Regional bathymetric map. F3. Basement relief around drill sites. F4. Heat flow, fluid flow, and temperature profiles. F5. Cross-hole responses for fluid flow, pressure, and permeability. F6. Borehole permeability estimates. F7. Seafloor installation schematic, Hole U1362A. F8. Seafloor installation schematic, Hole U1362B. F9. Summary of some shipboard results, Holes U1362A and U1301B. F10. Pumping rates and tracer concentrations. F11. CORK schematics, Holes U1362A and U1362B. F12. Sediment recovery and lithostratigraphy. F13. Examples of education and outreach activities. F14. Caliper widths and penetration rates, Holes U1362A, U1362B, and U1301B. F15. Calculated tides. PDF file |  |  | doi:10.2204/iodp.pr.327.2010 ## Publisher's notes Material in this publication may be copied without restraint for library, abstract service, educational, or personal research purposes; however, this source should be appropriately acknowledged. Core samples and the wider set of data from the science program covered in this report are under moratorium and accessible only to Science Party members until 5 September 2011. Citation: Expedition 327 Scientists, 2010. Juan de Fuca Ridge-flank hydrogeology: the hydrogeologic architecture of basaltic oceanic crust: compartmentalization, anisotropy, microbiology, and crustal-scale properties on the eastern flank of Juan de Fuca Ridge, eastern Pacific Ocean. IODP Prel. Rept., 327. doi:10.2204/iodp.pr.327.2010 Distribution: Electronic copies of this series may be obtained from the Integrated Ocean Drilling Program (IODP) Scientific Publications homepage on the World Wide Web at www.iodp.org/​scientific-publications/. This publication was prepared by the Integrated Ocean Drilling Program U.S. Implementing Organization (IODP-USIO): Consortium for Ocean Leadership, Lamont Doherty Earth Observatory of Columbia University, and Texas A&M University, as an account of work performed under the international Integrated Ocean Drilling Program, which is managed by IODP Management International (IODP-MI), Inc. Funding for the program is provided by the following agencies: National Science Foundation (NSF), United States Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan European Consortium for Ocean Research Drilling (ECORD) Ministry of Science and Technology (MOST), People's Republic of China Korea Institute of Geoscience and Mineral Resources (KIGAM) Australian Research Council (ARC) and New Zealand Institute for Geological and Nuclear Sciences (GNS), Australian/New Zealand Consortium Ministry of Earth Sciences (MoES), India ### Disclaimer Any opinions, findings, and conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the participating agencies, IODP Management International, Inc., Consortium for Ocean Leadership, Lamont-Doherty Earth Observatory of Columbia University, Texas A&M University, or Texas A&M Research Foundation. October 2010