Importance of Crustal Hydrogeology and Corks
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Borehole-to-borehole hydrologic response across 2.4 km in the upper oceanic crust: Implications for crustal-scale properties
[1] Subseafloor hydrologic observatories (CORKs) were installed in four boreholes in young seafloor on the eastern flank of the Juan de Fuca ridge to evaluate the hydrogeology of the upper oceanic crust. Two CORKs installed at Site 1301 were incompletely sealed, allowing cold bottom water to flow into basement at 2–5 L/s and causing a pressure perturbation in a preexisting sealed CORK at Site 1...
متن کاملScientific and technical design and deployment of long-term subseafloor observatories for hydrogeologic and related experiments, IODP Expedition 301, eastern flank of Juan de Fuca Ridge
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Background, motivation, objectives, and general design of Expedition 301 CORKs . . 1 CORK mechanical and hydraulic design . . . . . 3 Sensors and sampling . . . . . . . . . . . . . . . . . . . 4 CORK configurations and deployments during Expedition 301 . . . . . . . . . . . . . . . . . 9 Post-Expedition 301 CORK operations . . . . . . ...
متن کاملThe Procedure Adopted in the Plague Research Laboratory, Bombay, for Stoppering the Plague Prophylactic Bottles
Experiments on india-rubber and ordinary corks as to hoiu much time these take for sterilizing after immersion in Formalin lotion (2 p. c. strength). There are two sorts of the india-rubber ?corks, as supplied for the use of the Plague Research Laboratory. The one, that is the larger sized, is used for 30ccbottles. These are harder and tougher, and sit more easilj* on the bottles than the small...
متن کاملPhylogenetic diversity of microorganisms in subseafloor crustal fluids from Holes 1025C and 1026B along the Juan de Fuca Ridge flank
To expand investigations into the phylogenetic diversity of microorganisms inhabiting the subseafloor biosphere, basalt-hosted crustal fluids were sampled from Circulation Obviation Retrofit Kits (CORKs) affixed to Holes 1025C and 1026B along the Juan de Fuca Ridge (JdFR) flank using a clean fluid pumping system. These boreholes penetrate the crustal aquifer of young ocean crust (1.24 and 3.51 ...
متن کاملPostglacial Faults in Fennoscandia: Targets for scientific drilling
During the last stages of the Weichselian glaciation (ca. 9,000–15,000 years B.P.), reduced ice loads and glacially affected stress fields resulted in active faulting in Fennoscandia with fault scarps up to 160 km long and up to 30m high. These postglacial (PG) faults are usually SE dipping, SW–NE oriented thrusts, and represent reactivated, pre-existing crustal discontinuities. Postglacial fau...
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