Barnes, Jaime D; Cisneros, Miguel (2012): (Table 2) Chlorine geochemistry and mineralogy of altered oceanic crust samples [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.812212, Supplement to: Barnes, JD; Cisneros, M (2012): Mineralogical control on the chlorine isotope composition of altered oceanic crust. Chemical Geology, 326-327, 51-60, https://doi.org/10.1016/j.chemgeo.2012.07.022
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Abstract:
Bulk chlorine concentrations and chlorine stable isotope compositions were determined for hydrothermally altered basalt (extrusive lavas and sheeted dikes) and gabbro samples (n = 50) from seven DSDP/ODP/IODP drill sites. These altered oceanic crust (AOC) samples span a range of crustal ages, tectonic settings, alteration type, and crustal depth. Bulk chlorine concentrations range from < 0.01 wt.% to 0.09 wt.%. In general, higher chlorine concentrations coincide with an increase in temperature of alteration and amphibole content. d37Cl values of whole rock AOC samples range from -1.4 to +1.8 per mil. High d37Cl values (>=~0.5 per mil) are associated with areas of higher amphibole content. This observation is consistent with theoretical calculations that estimate amphibole should be enriched in 37Cl compared to co-existing fluid. Negative to near zero d37Cl values are found in areas dominated by clay minerals. Chlorine geochemistry is a rough indicator of metamorphic grade and mineralogy. AOC is a major Cl host in the subducting oceanic lithospheric slab. Here we show that bulk chlorine concentrations are ~3 times higher than previous estimates resulting in a greater contribution of Cl to the mantle.
Project(s):
Coverage:
Median Latitude: 7.672489 * Median Longitude: -35.986768 * South-bound Latitude: -32.724000 * West-bound Longitude: -101.525000 * North-bound Latitude: 36.878700 * East-bound Longitude: 156.359800
Date/Time Start: 1974-06-17T00:00:00 * Date/Time End: 2002-11-23T03:45:00
Minimum DEPTH, sediment/rock: 1.60 m * Maximum DEPTH, sediment/rock: 2090.00 m
Event(s):
37-332B * Latitude: 36.878700 * Longitude: -33.641000 * Date/Time: 1974-06-17T00:00:00 * Elevation: -1806.0 m * Penetration: 721.5 m * Recovery: 122.9 m * Location: North Atlantic/VALLEY * Campaign: Leg37 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 48 cores; 582.5 m cored; 0 m drilled; 19.4 % recovery
52-418A * Latitude: 25.035000 * Longitude: -68.057300 * Date/Time: 1977-02-10T00:00:00 * Elevation: -5511.0 m * Penetration: 570.5 m * Recovery: 205.5 m * Location: North Atlantic/CONT RISE * Campaign: Leg52 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 48 cores; 374 m cored; 0 m drilled; 54.9 % recovery
53-418A * Latitude: 25.035000 * Longitude: -68.057300 * Date/Time: 1977-03-15T00:00:00 * Elevation: -5514.0 m * Penetration: 868 m * Recovery: 234 m * Campaign: Leg53 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 39 cores; 306.4 m cored; 0 m drilled; 76.4 % recovery
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 | Barnes, Jaime D | DSDP/ODP/IODP sample designation | ||
| 6 | DEPTH, sediment/rock | Depth sed | m | Geocode – mbsf | ||
| 7 | Lithology/composition/facies | Lithology | Barnes, Jaime D | |||
| 8 | Chlorine | Cl | % | Barnes, Jaime D | Instrumental neutron activation analysis (INAA) (Reimann et al., 1998) | wt.% |
| 9 | δ37Cl | δ37Cl | ‰ | Barnes, Jaime D | Mass spectrometer, Finnigan, MAT 253 | |
| 10 | Amphibole | Amp | % | Barnes, Jaime D | X-ray diffraction (XRD) | wt.%, 0 = below detection limit |
| 11 | Chlorite | Chl | % | Barnes, Jaime D | X-ray diffraction (XRD) | wt.%, 0 = below detection limit |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
293 data points
Data
| 1 Event | 2 Latitude | 3 Longitude | 4 Elevation [m] | 5 Sample label | 6 Depth sed [m] | 7 Lithology | 8 Cl [%] | 9 δ37Cl [‰] | 10 Amp [%] | 11 Chl [%] |
|---|---|---|---|---|---|---|---|---|---|---|
| 118-735B | -32.724 | 57.266 | -731 | 118-735B-1D-2W,7.0-10.0 | 1.60 | Gabbro | 0.09 | 1.5 | 15 | |
| 118-735B | -32.724 | 57.266 | -731 | 118-735B-8D-1W,25.0-27.0 | 29.47 | Gabbro | 0.08 | 1.0 | 9 | 3 |
| 118-735B | -32.724 | 57.266 | -731 | 118-735B-19R-4W,0.0-2.0 | 79.08 | Gabbro | 0.02 | 0.4 | 6 | 4 |
| 118-735B | -32.724 | 57.266 | -731 | 118-735B-19R-4W,0.0-2.0 | 79.08 | Gabbro | 0.9 | |||
| 118-735B | -32.724 | 57.266 | -731 | 118-735B-35R-7W,13.0-15.5 | 170.85 | Gabbro | 0.05 | 1.8 | 19 | 0 |
| 118-735B | -32.724 | 57.266 | -731 | 118-735B-35R-7W,13.0-15.5 | 170.85 | Gabbro | 1.3 | |||
| 118-735B | -32.724 | 57.266 | -731 | 118-735B-52R-4W,9.0-11.0 | 251.86 | Gabbro | <0.01 | 0.3 | 18 | 7 |
| 118-735B | -32.724 | 57.266 | -731 | 118-735B-67R-4W,94.0-97.0 | 334.91 | Gabbro | <0.01 | -0.2 | 16 | 0 |
| 118-735B | -32.724 | 57.266 | -731 | 118-735B-80R-5W,88.0-90.0 | 430.21 | Gabbro | 0.01 | -0.6 | 12 | 0 |
| 118-735B | -32.724 | 57.266 | -731 | 176-735B-101R-4W,0.0-2.0 | 588.83 | Gabbro | <0.01 | 0.2 | 2 | 0 |
| 118-735B | -32.724 | 57.266 | -731 | 176-735B-117R-6W,0.0-2.0 | 688.30 | Gabbro | <0.01 | 0.7 | 4 | 8 |
| 118-735B | -32.724 | 57.266 | -731 | 176-735B-147R-4W,69.0-71.0 | 945.11 | Gabbro | <0.01 | 0.1 | ||
| 118-735B | -32.724 | 57.266 | -731 | 176-735B-147R-4W,69.0-71.0 | 945.11 | Gabbro | -0.1 | |||
| 118-735B | -32.724 | 57.266 | -731 | 176-735B-170R-2W,90.0-92.0 | 1151.21 | Gabbro | <0.01 | -0.3 | <1 | <1 |
| 118-735B | -32.724 | 57.266 | -731 | 176-735B-197R-1W,70.0-72.0 | 1383.75 | Gabbro | 0.01 | 0.7 | 0 | 5 |
| 37-332B | 36.879 | -33.641 | -1806 | 37-332B-2-1W,55-60 | 152.05 | Lava | <0.01 | 1.0 | ||
| 37-332B | 36.879 | -33.641 | -1806 | 37-332B-14-2W,72-74 | 391.22 | Lava | 0.02 | 0.1 | ||
| 37-332B | 36.879 | -33.641 | -1806 | 37-332B-28-1W,100-104 | 523.00 | Lava | <0.01 | 0.2 | ||
| 37-332B | 36.879 | -33.641 | -1806 | 37-332B-44-1W,55-61 | 674.55 | Lava | <0.01 | 0.8 | ||
| 52-418A | 25.035 | -68.057 | -5511 | 52-418A-31-3W,72-75 | 425.61 | Lava | <0.01 | -0.8 | ||
| 53-418A | 25.035 | -68.057 | -5514 | 53-418A-50-3W,13-17 | 576.48 | Lava | <0.01 | -0.3 | ||
| 53-418A | 25.035 | -68.057 | -5514 | 53-418A-65-3W,62-65 | 708.63 | Lava | <0.01 | -0.8 | ||
| 53-418A | 25.035 | -68.057 | -5514 | 53-418A-83-3W,6-10 | 843.36 | Lava | 0.01 | 0.0 | ||
| 70-504B | 1.227 | -83.730 | -3460 | 70-504B-67R-1,64-66 | 800.64 | Lava | 0.03 | -1.4 | ||
| 70-504B | 1.227 | -83.730 | -3460 | 70-504B-67R-1,64-66 | 800.64 | 0.4 | ||||
| 70-504B | 1.227 | -83.730 | -3460 | 70-504B-67R-1,64-66 | 800.64 | -0.5 | ||||
| 70-504B | 1.227 | -83.730 | -3460 | 70-504B-67R-1,64-66 | 800.64 | 0.1 | ||||
| 70-504B | 1.227 | -83.730 | -3460 | 70-504B-67R-1,64-66 | 800.64 | -0.3 | ||||
| 83-504B | 1.227 | -83.730 | -3460 | 83-504B-90R-2,4-6 | 996.04 | Dike | <0.01 | 0.3 | ||
| 83-504B | 1.227 | -83.730 | -3460 | 83-504B-111R-1,74-76 | 1162.24 | Dike | <0.01 | 0.0 | ||
| 83-504B | 1.227 | -83.730 | -3460 | 83-504B-137R-1,109-111 | 1328.09 | Dike | <0.01 | -0.4 | ||
| 137-504B | 1.227 | -83.730 | -3474 | 137-504B-176R-1,102-104 | 1596.32 | Dike | 0.03 | -0.3 | ||
| 140-504B | 1.227 | -83.730 | -3474 | 140-504B-187R-1,26-29 | 1632.26 | Dike | 0.04 | 0.1 | ||
| 140-504B | 1.227 | -83.730 | -3474 | 140-504B-187R-1,26-29 | 1632.26 | Dike | 0.3 | |||
| 140-504B | 1.227 | -83.730 | -3474 | 140-504B-214R-2,29-31 | 1820.34 | Dike | 0.05 | -0.4 | 19 | 0 |
| 140-504B | 1.227 | -83.730 | -3474 | 140-504B-214R-2,29-31 | 1820.34 | Dike | 0.6 | |||
| 140-504B | 1.227 | -83.730 | -3474 | 140-504B-214R-2,29-31 | 1820.34 | Dike | 1.4 | |||
| 140-504B | 1.227 | -83.730 | -3474 | 140-504B-214R-2,29-31 | 1820.34 | Dike | 1.2 | |||
| 140-504B | 1.227 | -83.730 | -3474 | 140-504B-236R-1,26-31 | 1980.96 | Dike | 0.02 | 0.6 | ||
| 148-504B | 1.227 | -83.730 | -3474 | 148-504B-251R-1,10-12 | 2090.00 | Dike | <0.01 | -0.2 | 0 | 0 |
| 129-801C | 18.642 | 156.360 | -5685 | 129-801C-1R-6,4-6 | 500.01 | Lava | 0.02 | 0.8 | 0 | 20 |
| 129-801C | 18.642 | 156.360 | -5685 | 129-801C-1R-6,4-6 | 500.01 | Lava | 0.6 | |||
| 129-801C | 18.642 | 156.360 | -5685 | 129-801C-5R-3,30-40 | 534.07 | Lava | 0.01 | -1.1 | ||
| 129-801C | 18.642 | 156.360 | -5685 | 129-801C-5R-3,30-40 | 534.07 | Lava | -1.4 | |||
| 129-801C | 18.642 | 156.360 | -5685 | 129-801C-11R-2,20-30 | 579.50 | Lava | 0.02 | 0.5 | 0 | 9 |
| 185-801C | 18.642 | 156.360 | -5674 | 185-801C-23R-3,30-40 | 684.88 | Lava | <0.01 | -0.5 | ||
| 185-801C | 18.642 | 156.360 | -5674 | 185-801C-30R-1,114-116 | 748.44 | Lava | <0.01 | -0.4 | ||
| 185-801C | 18.642 | 156.360 | -5674 | 185-801C-36R-1,92-94 | 805.02 | Lava | 0.01 | -0.4 | ||
| 185-801C | 18.642 | 156.360 | -5674 | 185-801C-36R-1,92-94 | 805.02 | Lava | -0.2 | |||
| 185-801C | 18.642 | 156.360 | -5674 | 185-801C-43R-3,34-36 | 872.26 | Lava | 0.02 | -0.1 | ||
| 185-801C | 18.642 | 156.360 | -5674 | 185-801C-48R-2,14-16 | 918.14 | Lava | <0.01 | 0.7 | ||
| 185-801C | 18.642 | 156.360 | -5674 | 185-801C-48R-2,14-16 | 918.14 | Lava | 0.7 | |||
| 185-801C | 18.642 | 156.360 | -5674 | 185-801C-48R-2,14-16 | 918.14 | Lava | 0.0 | |||
| 147-894F | 2.300 | -101.525 | -3036 | 147-894F-2R-1,29-31 | 9.59 | Gabbro | <0.01 | 0.6 | ||
| 147-894F | 2.300 | -101.525 | -3036 | 147-894G-5R-1,23-25 | 50.23 | Gabbro | 0.03 | 0.3 | ||
| 147-894F | 2.300 | -101.525 | -3036 | 147-894G-11R-3,61-63 | 87.61 | Gabbro | 0.02 | 1.7 | ||
| 147-894F | 2.300 | -101.525 | -3036 | 147-894G-17R-1,18-22 | 125.98 | Gabbro | 0.02 | 0.3 | ||
| 147-894F | 2.300 | -101.525 | -3036 | 147-894G-17R-1,18-22 | 125.98 | Gabbro | 0.6 | |||
| 147-894F | 2.300 | -101.525 | -3036 | 147-894G-20R-CC,69-71 | 148.11 | Gabbro | 0.03 | 0.9 | ||
| 206-1256D | 0.736 | -91.934 | -3635 | 206-1256D-45R-1,36-38 | 552.86 | Lava | 0.01 | 0.2 | ||
| 206-1256D | 0.736 | -91.934 | -3635 | 206-1256D-74R-1,40-42 | 747.60 | Lava | 0.02 | 0.7 | ||
| 309-U1256D | 6.735 | -91.934 | -3635 | 309-U1256D-103R-1,22-24 | 936.22 | Lava | <0.01 | -0.2 | ||
| 309-U1256D | 6.735 | -91.934 | -3635 | 309-U1256D-128R-1,93-95 | 1057.03 | Dike | <0.01 | -0.2 | ||
| 309-U1256D | 6.735 | -91.934 | -3635 | 309-U1256D-151R-1,22-24 | 1165.52 | Dike | 0.01 | 0.0 | ||
| 309-U1256D | 6.735 | -91.934 | -3635 | 312-U1256D-175R-1,80-82 | 1272.10 | Dike | 0.02 | -1.0 | ||
| 309-U1256D | 6.735 | -91.934 | -3635 | 312-U1256D-175R-1,80-82 | 1272.10 | Dike | 0.3 | |||
| 309-U1256D | 6.735 | -91.934 | -3635 | 312-U1256D-175R-1,80-82 | 1272.10 | Dike | 0.0 | |||
| 309-U1256D | 6.735 | -91.934 | -3635 | 312-U1256D-175R-1,80-82 | 1272.10 | Dike | 0.2 | |||
| 309-U1256D | 6.735 | -91.934 | -3635 | 312-U1256D-214R-2,37-39 | 1412.72 | Gabbro | 0.05 | 0.2 | 16 | 0 |
| 309-U1256D | 6.735 | -91.934 | -3635 | 312-U1256D-214R-2,37-39 | 1412.72 | Gabbro | 1.3 | |||
| 309-U1256D | 6.735 | -91.934 | -3635 | 312-U1256D-214R-2,37-39 | 1412.72 | Gabbro | 0.1 | |||
| 309-U1256D | 6.735 | -91.934 | -3635 | 312-U1256D-232R-1,21-23 | 1493.11 | Gabbro | 0.04 | 1.2 |