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Gieskes, Joris M; Elderfield, Henry; Nevsky, Brad (1983): (Table 1) Interstitial water chemistry at DSDP Leg 65 Holes. PANGAEA, https://doi.org/10.1594/PANGAEA.818013, Supplement to: Gieskes, JM et al. (1983): Interstitial water studies, Leg 65, Deep Sea Drilling Project. In: Lewis, BTR; Robinson, P; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 65, 441-449, https://doi.org/10.2973/dsdp.proc.65.118.1983

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Abstract:
Studies of the chemical composition of interstitial waters obtained at Sites 482, 483, 484, and 485 on DSPP Leg 65 have revealed the following: (1) Early diagenetic processes in these rapidly deposited sediments led to large decreases in dissolved sulfate and concomitant increases in dissolved ammonia and bicarbonate (alkalinity). Associated with these processes of biodegradation of organic matter are carbonate-precipitation reactions leading to minima in dissolved calcium. (2) In Sites 482, 483, and 485 a flux of dissolved calcium from the basalts of Layer 2 into the sediments is implied. This flux is diffusive in nature, and in none of the sites, drilled on very young oceanic crust, is there any evidence for convective motion of pore fluids in the sediment column. (3) As a result of elevated temperatures in the sediments (caused by relatively high heat flow on young oceanic crust), silica diagenesis occurs at a relatively early stage. This diagenesis is associated with processes involving the alteration of volcanic matter in the sediments (low dissolved 87Sr/86Sr), which results in decreases in dissolved silica, magnesium, and potassium, and increases in dissolved calcium, lithium, and strontium.
Project(s):
Coverage:
Median Latitude: 22.870230 * Median Longitude: -108.130760 * South-bound Latitude: 22.748700 * West-bound Longitude: -108.748300 * North-bound Latitude: 23.188700 * East-bound Longitude: -107.903500
Date/Time Start: 1979-01-24T00:00:00 * Date/Time End: 1979-03-05T00:00:00
Minimum DEPTH, sediment/rock: 1.5 m * Maximum DEPTH, sediment/rock: 290.0 m
Event(s):
65-482 * Latitude: 22.789700 * Longitude: -107.993800 * Date/Time: 1979-01-24T00:00:00 * Elevation: -2998.0 m * Penetration: 4 m * Recovery: 3.9 m * Location: North Pacific/Gulf of California/CONT RISE * Campaign: Leg65 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 1 cores; 4 m cored; 0 m drilled; 98.5 % recovery
65-482A * Latitude: 22.789700 * Longitude: -107.993300 * Date/Time: 1979-01-24T00:00:00 * Elevation: -2998.0 m * Penetration: 44 m * Recovery: 18.7 m * Location: North Pacific/Gulf of California/CONT RISE * Campaign: Leg65 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 3 cores; 28.5 m cored; 0 m drilled; 65.7 % recovery
65-482B * Latitude: 22.789700 * Longitude: -107.993300 * Date/Time: 1979-01-24T00:00:00 * Elevation: -2998.0 m * Penetration: 229 m * Recovery: 99.8 m * Location: North Pacific/Gulf of California/CONT RISE * Campaign: Leg65 * Basis: Glomar Challenger * Device: Drilling/drill rig (DRILL) * Comment: 24 cores; 184.5 m cored; 0 m drilled; 54.1 % recovery
Comment:
Sediment depth is given in mbsf. Empty cells mean not determined.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Latitude of eventLatitude
3Longitude of eventLongitude
4Elevation of eventElevationm
5Sample code/labelSample labelGieskes, Joris MODP sample designation
6DEPTH, sediment/rockDepthmGeocode
7pHpHGieskes, Joris Msee reference(s)
8Alkalinity, totalATmmol(eq)/lGieskes, Joris Msee reference(s)
9SalinitySalGieskes, Joris Msee reference(s)Unit is g/kg
10ChlorineClmg/kgGieskes, Joris Msee reference(s)
11CalciumCammol/lGieskes, Joris Msee reference(s)
12MagnesiumMgmmol/lGieskes, Joris Msee reference(s)
13StrontiumSrµmol/lGieskes, Joris Msee reference(s)
14Strontium 87/Strontium 86 ratio87Sr/86SrGieskes, Joris Msee reference(s)
15ManganeseMnµmol/lGieskes, Joris Msee reference(s)
16PotassiumKmmol/lGieskes, Joris Msee reference(s)
17LithiumLiµmol/lGieskes, Joris Msee reference(s)
18Sulfate[SO4]2-mmol/lGieskes, Joris Msee reference(s)
19Ammonium[NH4]+µmol/lGieskes, Joris Msee reference(s)
20SiliconSiµmol/lGieskes, Joris Msee reference(s)
Size:
680 data points

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