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Froelich, Philip N; Mortlock, Richard A; Mefferd, M; Powers, J (1991): Pore-water chemistry of ODP Leg 114 holes [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.755281, Supplement to: Froelich, PN et al. (1991): Interstitial-water chemistry: abyssal South Atlantic and East Georgia basins, Islas Orcadas and Meteor Rises. In: Ciesielski, PF; Kristoffersen, Y; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 114, 719-731, https://doi.org/10.2973/odp.proc.sr.114.153.1991

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Abstract:
Pore-water samples were recovered at five sites from ODP Leg 114 in the subantarctic South Atlantic Ocean and analyzed for pH, alkalinity, chloride, sulfate, fluoride, silica, magnesium, calcium, strontium, potassium, lithium, and barium. At sites in the East Georgia Basin and on the Islas Orcadas Rise, Ca increases and Mg decreases linearly downhole with a DeltaMg/DeltaCa ratio reflecting conservative diffusive exchange and basalt basement reactions. At sites on the west flank of the Mid-Atlantic Ridge and on the Meteor Rise, Ca gradients are nonlinear, and nonconservative DeltaMg/DeltaCa ratios reflect alteration reactions of abundant silicic volcanic ash in the sediment. K decreases linearly downhole at all sites, reflecting uptake by basement and the absence of significant sediment-hosted reactions. SO4 decreases and alkalinity increases downhole are due to a slight sulfate reduction at all sites except at Site 701. Sr increases downhole at all sites except Site 701, with DeltaSr/DeltaCa ratios reflecting diffusive exchange with basement. At Site 704 on the Meteor Rise, there is intense Sr production during carbonate recrystallization in the upper 200 mbsf. Below 200 mbsf at Site 704, the ion concentration product of SrSO4 is constant, suggesting Sr control by celestite solubility. Li and F concentrations display complex behavior related to sedimentary reactions, probably calcite recrystallization (Li uptake and F release).
Project(s):
Coverage:
Median Latitude: -50.631222 * Median Longitude: -18.720833 * South-bound Latitude: -52.985000 * West-bound Longitude: -30.677000 * North-bound Latitude: -46.879000 * East-bound Longitude: 7.420800
Date/Time Start: 1987-03-20T10:45:00 * Date/Time End: 1987-05-03T10:14:00
Minimum DEPTH, sediment/rock: 2.9 m * Maximum DEPTH, sediment/rock: 665.1 m
Event(s):
114-699A  * Latitude: -51.542000 * Longitude: -30.677000 * Date/Time Start: 1987-03-20T10:45:00 * Date/Time End: 1987-03-26T15:29:00 * Elevation: -3716.0 m * Penetration: 518.1 m * Recovery: 356.52 m * Location: South Atlantic Ocean * Campaign: Leg114 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 56 cores; 518.1 m cored; 0 m drilled; 68.8 % recovery
114-700B  * Latitude: -51.533000 * Longitude: -30.278100 * Date/Time Start: 1987-03-27T22:45:00 * Date/Time End: 1987-04-03T12:45:00 * Elevation: -3612.0 m * Penetration: 489 m * Recovery: 245.19 m * Location: South Atlantic Ocean * Campaign: Leg114 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 53 cores; 472.1 m cored; 0 m drilled; 51.9 % recovery
114-701A  * Latitude: -51.985000 * Longitude: -23.212300 * Date/Time Start: 1987-04-04T14:35:00 * Date/Time End: 1987-04-06T06:29:00 * Elevation: -4647.0 m * Penetration: 74.8 m * Recovery: 69.66 m * Location: South Atlantic Ocean * Campaign: Leg114 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 8 cores; 74.8 m cored; 0 m drilled; 93.1 % recovery
Size:
1058 data points

Data

Download dataset as tab-delimited text — use the following character encoding:


Event

Sample label

Depth sed [m]

pH

AT [mmol(eq)/l]

Sal

Mg [mmol/l]

Ca [mmol/l]

Cl- [mmol/l]
10 
[SO4]2- [mmol/l]
11 
F- [µmol/l]
12 
Si [µmol/l]
13 
Sr [µmol/l]
14 
K [mmol/l]
15 
Li [µmol/l]
16 
Ba [µmol/l]
114-699A 114-699A-1H-4,145-1505.97.733.0934.251.4810.88554.128.3062.282212710.6626.00.693
114-699A114-699A-3H-3,145-15022.57.463.4535.451.2412.49569.927.9041.173014010.3126.00.593
114-699A114-699A-6H-5,145-15054.07.834.0835.048.8914.60568.926.8041.487219710.4042.80.640
114-699A114-699A-9H-4,145-15081.07.784.5035.047.8516.12565.926.3041.998423010.7957.80.495
114-699A114-699A-12H-4,145-150109.57.764.5135.047.4718.04566.925.1036.095025710.2273.60.392
114-699A114-699A-15H-3,145-150136.57.464.7935.045.8019.63560.025.1030.999730310.0083.50.505
114-699A114-699A-18H-4,145-150166.57.224.5434.844.7320.85561.024.8028.511523419.3996.60.483
114-699A114-699A-21H-4,140-150195.07.244.7134.843.3722.85565.924.3025.910903839.39108.00.451
114-699A114-699A-24X-2,140-150217.58.144.9434.843.7422.84567.924.4022.210734088.42110.00.688
114-699A114-699A-3OX-3,140-150273.07.255.6035.040.5926.67568.923.9019.010944798.33135.00.446
114-699A114-699A-33X-5,140-150304.57.235.2335.040.7526.75570.023.6019.410324908.38135.00.550
114-699A114-699A-36X-5,140-150333.07.254.9834.838.8128.85569.923.6017.511464887.02145.02.058
114-699A114-699A-39X-1,140-150355.5?7.85?4.79?34.0?41.18?33.58?536.2?21.00?16.3?655
114-699A114-699A-42X-5,140-150390.0?33.7?39.51?36.27?539.2?20.30?19.3?595?711?4.65?194.0?1.320
114-699A114-699A-45X-5,140-150418.533.837.0235.36559.022.1026.1508915
114-699A114-699A-48X-4,140-150445.57.193.56555.025.2034.54085567.31115.02.736
114-699A114-699A-48X-4,140-150445.5?7.43?3.71?33.8?551.1?33.8?484?563?7.24?128.0?1.127
114-699A114-699A-54X-1,140-150498.032.333.6038.62531.219.4030.25771018
114-700B 114B-700B-3R-1,145-15027.87.763.7034.651.5712.02553.226.7276.176115010.8835.71.895
114-700B114B-700B-6R-5,145-15062.37.554.0134.848.9114.52548.325.3260.241821810.4442.00.759
114-700B114B-700B-9R-5,145-15090.87.204.0635.248.0717.02555.124.7458.337933110.4449.50.530
114-700B114B-700B-13R-4,140-150127.37.553.9535.046.2819.37556.125.1658.76053699.3952.01.642
114-700B114B-700B-16R-5,140-150157.37.355.1235.244.5022.96561.923.9860.64654678.9060.11.014
114-700B114B-700B-20R-2,140-150190.87.634.3535.043.5023.49555.124.0461.95695019.6562.71.146
114-700B114B-700B-26R-2,140-150240.97.454.2635.039.9828.51549.322.8254.211316287.4175.22.766
114-701A 114-701A-1H-4,145-1505.97.694.2134.852.6710.99558.027.3061.6811979.8324.40.644
114-701A114-701A-3H-4,145-15023.77.735.0035.052.3211.35557.026.8043.69509810.0924.41.029
114-701A114-701A-6H-5,145-15053.77.695.6635.050.5912.13558.025.4033.98611199.8330.10.544
114-701B 114-701B-1H-5,145-15077.47.626.0334.849.5112.13554.024.5030.996911910.5335.70.699
114-701B114-701B-4H-5,145-150105.97.596.1934.647.9512.87555.024.4027.797912710.0942.60.536
114-701B114-701B-7H-4,145-150132.97.586.3334.246.5013.29553.024.1025.6104412210.0047.00.585
114-701B114-701B-9H-5,46-50150.07.725.9534.546.6213.49558.024.5030.5132012910.6252.01.058
114-701B114-701B-13H-3,140-150188.47.516.6034.345.9514.02557.023.0028.210801369.6559.50.489
114-701C 155.77.746.4734.646.6213.67553.024.0924.211711339.6552.60.613
114-701C114-701C-23H-4,140-150211.77.826.6734.245.9514.18551.023.6525.1106311710.1861.40.046
114-701C114-701C-27H-2,140-150246.77.776.2734.045.0914.33549.021.1427.711841379.0865.80.720
114-701C114-701C-31X-2,140-150284.77.686.0534.545.3214.65550.023.4527.79621378.9965.80.492
114-701C114-701C-34X-4,140-150316.27.896.2834.443.6415.03550.023.9026.210281289.3467.00.496
114-701C114-701C-37X-3,140-150343.27.656.3334.043.7115.26546.024.1727.710831309.3465.80.490
114-701C114-701C-42X-1,140-150387.77.616.1133.849.5316.27543.023.4029.81192
114-701C114-701C-45X-4,140-150420.77.765.3434.146.8015.93544.023.1328.311671058.5558.90.741
114-701C114-701C-49X-4,140-150458.77.744.6134.547.5615.01550.024.9337.76331268.6452.00.967
114-702A 114-702A-1H-2,145-1502.97.702.9234.253.2910.88552.029.1467.07931119.5225.10.896
114-702A114-702A-3H-5,145-15021.57.652.9335.053.4011.57561.028.2865.08191259.5628.20.398
114-702B 114-702B-1H-3,145-1504.47.573.0034.753.5910.90556.028.6367.58029910.0225.70.463
114-702B114-702B-3H-5,145-15023.27.582.9634.553.1511.66564.027.7970.376213710.2225.10.414
114-702B114-702B-6X-1,145-15045.77.623.0234.852.0113.12563.027.3068.17871769.3025.70.351
114-702B114-702B-9X-4,145-15078.77.542.8534.450.9114.61560.027.1071.77492229.0825.70.465
114-702B114-702B-12X-5,145-150108.77.612.9234.548.5716.95559.026.3868.978733210.0028.80.596
114-702B114-702B-15X-5,145-150137.27.572.7434.647.3018.94564.025.9170.37303679.0427.60.810
114-702B114-702B-18X-5,145-150165.77.382.9434.645.6321.00566.025.3676.77984338.2926.30.823
114-702B114-702B-21X-2,145-150189.77.382.8234.945.1322.23564.025.4681.75604688.1126.31.033
114-702B114-702B-24X-2,145-150218.27.472.6835.043.3424.42564.025.6192.85005407.8526.90.675
114-702B114-702B-30X-1,145-150273.77.422.4735.241.1528.68565.025.1599.76197018.031.740
114-704A 114-704A-1H-4,145-1505.97.753.1434.554.8210.63567.028.4270.28401049.6525.10.384
114-704A114-704A-3H-5,145-15024.17.703.4634.956.1511.38582.030.0272.2100912410.4422.60.283
114-704A114-704A-6H-3,145-15049.67.643.9035.255.9511.58583.029.9462.813110.1819.40.294
114-704A114-704A-9H-4,145-15079.67.664.0534.955.1911.46582.029.3164.11559.6916.30.257
114-704A114-704A-12H-5,145-150109.67.593.9935.052.9011.35576.028.0568.396326610.1313.20.714
114-704A114-704A-15H-5,145-150138.17.574.3034.849.6612.11573.026.8078.2109650710.3110.00.376
114-704A114-704A-18X-4,145-150165.17.414.3734.845.7213.73569.024.9598.110807059.788.80.632
114-704A114-704A-21X-3,145-150192.17.494.2034.541.3015.11567.023.12112.710379139.399.40.347
114-704A114-704A-25X-4,145-150231.67.583.9734.436.4316.94566.021.19127.5109210879.7410.00.344
114-704B 114-704B-27X-5,145-150249.67.574.1634.435.6817.46569.020.55137.6107310768.739.40.251
114-704B114-704B-30X-2,145-150273.67.544.2334.433.2018.98569.019.21158.1106411518.338.80.475
114-704B114-704B-33X-4,145-150305.17.484.7034.129.9320.26563.018.57179.6115411328.688.10.407
114-704B114-704B-36X-2,145-150330.67.414.3834.028.7721.11575.018.35182.5118911328.778.80.437
114-704B114-704B-39X-5,145-150363.67.414.3434.027.2721.97565.017.25178.9121712198.5111.30.492
114-704B114-704B-42X-5,97-107391.77.294.5334.025.6822.76565.017.31161.9124912718.4714.40.464
114-704B114-704B-46X-4,140-150428.67.363.3734.025.0622.59566.017.19131.1116411667.9818.80.748
114-704B114-704B-48X-2,140-150444.67.353.2334.024.2623.31566.016.35123.0111712737.7223.20.910
114-704B114-704B-52X-4,140-150478.17.363.9034.122.8424.25567.015.71113.6126013027.9021.90.508
114-704B114-704B-54X-5,140-150498.67.413.4334.023.3724.02566.016.66108.3121612807.5023.20.474
114-704B114-704B-58X-5,140-150536.67.463.3534.123.2824.33563.016.6398.9113313017.6326.3
114-704B114-704B-60X-5,140-150555.67.443.5033.919.6725.47571.015.5196.9113913617.4122.60.723
114-704B114-704B-63X-4,140-150582.67.362.5434.020.4525.81571.015.15110.5113414636.7128.81.178
114-704B114-704B-70X-1,140-150644.67.422.8933.915.9127.13566.013.48124.5124015357.37
114-704B114-704B-72X-2,140-150665.17.481.9133.615.2626.83564.013.70146.6124714637.191.341