Gieskes, Joris M; Nevsky, Brad; Chain, Aileen (1981): (Table 1) Interstitial water chemistry at DSDP Leg 63 Holes [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.819254, Supplement to: Gieskes, JM et al. (1981): Interstitial water studies, Leg 63. In: Yeats, RS; Haq, BU; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 63, 623-629, https://doi.org/10.2973/dsdp.proc.63.120.1981
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Published: 1981 (exact date unknown) • DOI registered: 2013-10-10
Abstract:
Interstitial water studies of drill sites off the California Continental Borderland (Sites 467, 468, 469) reveal that fresh water can penetrate through the sediments as far as the San Miguel Gap (Site 467). In the rapidly deposited sediments of Site 467, decreases in magnesium concentrations can be related to the formation of dolomite in the claystone unit of the sediment column. Decreases in magnesium and increases in calcium at Site 469 at the base of the Patton Escarpment are probably the result of alteration of volcanic matter in the sediments and/or the underlying basalts.
Studies of the gradients of calcium, magnesium, potassium, strontium, and lithium at Site 471 indicate that a 150-meter-thick porcellanite-claystone-limestone complex acts as an almost complete barrier to diffusive exchange with the underlying sediments. Uptake reactions involving potassium and magnesium may still occur in the Porcellanite complex.
At all sites, with the exception of Site 467, gradients of calcium show concentration increases with depth and simultaneous decreases in dissolved magnesium - a pattern commonly observed in open-ocean environments.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 28.959910 * Median Longitude: -117.023430 * South-bound Latitude: 20.965300 * West-bound Longitude: -120.757800 * North-bound Latitude: 33.849500 * East-bound Longitude: -107.063500
Date/Time Start: 1978-10-10T00:00:00 * Date/Time End: 1978-11-22T00:00:00
Minimum DEPTH, sediment/rock: 2.0 m * Maximum DEPTH, sediment/rock: 795.0 m
Event(s):
63-467 * Latitude: 33.849500 * Longitude: -120.757800 * Date/Time: 1978-10-10T00:00:00 * Elevation: -2128.0 m * Penetration: 1041.5 m * Recovery: 399.1 m * Location: North Pacific/GAP * Campaign: Leg63 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 100 cores; 946.5 m cored; 38 m drilled; 42.2 % recovery
63-468 * Latitude: 32.617200 * Longitude: -120.117800 * Date/Time: 1978-10-21T00:00:00 * Elevation: -1849.0 m * Penetration: 241 m * Recovery: 81 m * Location: North Pacific/ESCARPMENT * Campaign: Leg63 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 25 cores; 237.5 m cored; 0 m drilled; 34.1 % recovery
63-468A * Latitude: 32.623500 * Longitude: -120.109200 * Date/Time: 1978-10-21T00:00:00 * Elevation: -1737.0 m * Penetration: 35.5 m * Recovery: 27.7 m * Location: North Pacific/ESCARPMENT * Campaign: Leg63 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 4 cores; 35.5 m cored; 0 m drilled; 78 % recovery
Comment:
Sediment depth is given in mbsf. #0 = no data available; empty cells = not determined.
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 | pH | pH | Gieskes, Joris M | see reference(s) | ||
| 8 | Alkalinity, total | AT | mmol(eq)/l | Gieskes, Joris M | see reference(s) | |
| 9 | Sulfate | [SO4]2- | mmol/l | Gieskes, Joris M | see reference(s) | # = value in parantheses |
| 10 | Ammonium | [NH4]+ | µmol/l | Gieskes, Joris M | see reference(s) | |
| 11 | Silicon dioxide | SiO2 | µmol/l | Gieskes, Joris M | see reference(s) | |
| 12 | Calcium | Ca | mmol/l | Gieskes, Joris M | see reference(s) | |
| 13 | Magnesium | Mg | mmol/l | Gieskes, Joris M | see reference(s) | |
| 14 | Strontium | Sr | µmol/l | Gieskes, Joris M | see reference(s) | |
| 15 | Manganese | Mn | µmol/l | Gieskes, Joris M | see reference(s) | |
| 16 | Lithium | Li | µmol/l | Gieskes, Joris M | see reference(s) | |
| 17 | Potassium | K | mmol/l | Gieskes, Joris M | see reference(s) | |
| 18 | Chlorinity | cl | ‰ | Gieskes, Joris M | see reference(s) | |
| 19 | Salinity | Sal | Gieskes, Joris M | see reference(s) | Unit is per mil | |
| 20 | Comment | Comment | Gieskes, Joris M |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
604 data points