Gieskes, Joris M; Johnston, Kirk; Boehm, Marcus (1985): (Table 1) Chemisity of interstitial water at DSDP Leg 66 holes [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.804665, Supplement to: Gieskes, JM et al. (1985): Appendix: Interstitial water studies, Leg 66. In: von Heune, R; Aubouin, J; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 84, 961-967, https://doi.org/10.2973/dsdp.proc.84.app.1985
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Published: 1985 (exact date unknown) • DOI registered: 2013-02-04
Abstract:
During Leg 66, a transect was drilled across the Middle America Trench off Mexico. In this report, interstitial water analyses for Sites 487 (on oceanic crust), 490, 491, and 492 (continental slope apron), and 493 (upper continental slope) are presented. All sites are characterized by high sedimentation rates, and as a result sulfate reduction and methane generation processes are very important. At Sites 490 through 492 decreases in chlorinity are evidence of the presence of gas hydrates. At Site 493 a sharp increase in dissolved calcium and the complete depletion of dissolved magnesium just above basement indicate that weathering of continental crust is still an ongoing process.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 16.180514 * Median Longitude: -98.989400 * South-bound Latitude: 15.853500 * West-bound Longitude: -99.175300 * North-bound Latitude: 16.381000 * East-bound Longitude: -98.925500
Date/Time Start: 1979-03-24T00:00:00 * Date/Time End: 1979-04-24T00:00:00
Minimum DEPTH, sediment/rock: 3 m * Maximum DEPTH, sediment/rock: 620 m
Event(s):
66-487 * Latitude: 15.853500 * Longitude: -99.175300 * Date/Time: 1979-03-24T00:00:00 * Elevation: -4764.0 m * Penetration: 190.5 m * Recovery: 119.6 m * Location: North Pacific/TRENCH * Campaign: Leg66 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 20 cores; 180.5 m cored; 9.5 m drilled; 66.3 % recovery
66-490 * Latitude: 16.159300 * Longitude: -99.056500 * Date/Time: 1979-04-08T00:00:00 * Elevation: -1761.0 m * Penetration: 588.5 m * Recovery: 343.4 m * Location: North Pacific/TRANSITION ZONE * Campaign: Leg66 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 63 cores; 577 m cored; 9 m drilled; 59.5 % recovery
66-491 * Latitude: 16.029000 * Longitude: -98.972200 * Date/Time: 1979-04-13T00:00:00 * Elevation: -2883.0 m * Penetration: 542 m * Recovery: 389.4 m * Location: North Pacific/SLOPE * Campaign: Leg66 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 58 cores; 532.5 m cored; 4.5 m drilled; 73.1 % recovery
Comment:
DEPTH, sediment [m] is given in mbsf.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Elevation of event | Elevation | m | |||
| 5 | Sample code/label | Sample label | Gieskes, Joris M | DSDP/ODP/IODP sample designation | ||
| 6 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 7 | Alkalinity, total | AT | mmol(Eq)/l | Gieskes, Joris M | Titration | Unit in paper meq/dm**3 |
| 8 | Calcium | Ca | mmol/l | Gieskes, Joris M | Titration | |
| 9 | Magnesium | Mg | mmol/l | Gieskes, Joris M | Titration | |
| 10 | Chloride | Cl- | mg/kg | Gieskes, Joris M | Titration | |
| 11 | Sulfate | [SO4]2- | mmol/l | Gieskes, Joris M | Titration | |
| 12 | Ammonium | [NH4]+ | µmol/l | Gieskes, Joris M | Titration | |
| 13 | Silicon | Si | µmol/l | Gieskes, Joris M | Titration |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
532 data points