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Ussler, William III; Paull, Charles K; Fullagar, Paul D (2000): (Table T1) Pore-water strontium content, and Sr isotope composition and ages of pore waters and sedimentary carbonates of ODP Leg 171B sites [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.788156, Supplement to: Ussler, WIII et al. (2000): Pore-water strontium isotopes from the Leg 171B drilling transect down the Blake Spur. In: Kroon, D; Norris, RD; Klaus, A (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 171B, 1-17, https://doi.org/10.2973/odp.proc.sr.171B.118.2000

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Abstract:
Strontium concentrations and 87Sr/86Sr values were measured on pore-water and sedimentary carbonate samples from sediments recovered at Sites 1049-1053 on the Blake Spur during Ocean Drilling Program Leg 171B. These sites form a 40-km-long depth transect extending along the crest of the Blake Spur from near the upper edge of the Blake Escarpment (a steep cliff composed of Mesozoic carbonates) westward toward the interior of the Blake-Bahama Platform. Although these sites were selected for paleoceanographic purposes, they also form a hydrologic transect across the upper eastern flank of the Blake-Bahama Platform. Here, we use pore-water strontium concentrations and isotopes as a proxy to define patterns of fluid movement through the flanks of this platform.
Pore-water strontium concentration increases with depth at all sites implying that strontium has been added during sediment burial and diagenesis. The isotopic values decrease from seawater-like values in the shallow samples (~0.70913) to values as low as 0.707342 in one of the deepest samples (~625 meters below seafloor). The change in pore-water strontium isotopic values is independent of the strontium isotopic compositions predicted from the host sediment age and measured on bulk carbonate in some samples. In most cases the difference between predicted sediment strontium isotopic composition and measured value is less than ±2 about the mean of the measured strontium value. Both the increase in concentration and the decrease in the strontium isotope values with increasing depth indicate that strontium was expelled from older carbonates. The strontium concentration and isotope profiles vary between sites according to their proximity to the Blake-Bahama Platform edge. Profiles from Site 1049 (nearest the platform edge) show the greatest amount of mixing with modern seawater, whereas the site most distal to the platform edge (Site 1052) shows the most significant influence of older, deeper carbonates on the pore-water strontium isotopic composition.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 30.041454 * Median Longitude: -76.388091 * South-bound Latitude: 29.951300 * West-bound Longitude: -76.626800 * North-bound Latitude: 30.142380 * East-bound Longitude: -76.112160
Date/Time Start: 1997-01-13T13:15:00 * Date/Time End: 1997-02-08T19:30:00
Minimum DEPTH, sediment/rock: 4.45 m * Maximum DEPTH, sediment/rock: 649.25 m
Event(s):
171-1049A  * Latitude: 30.142380 * Longitude: -76.112160 * Date/Time: 1997-01-13T13:15:00 * Elevation: -2656.1 m * Penetration: 191.9 m * Recovery: 104.32 m * Location: Blake Nose, North Atlantic Ocean * Campaign: Leg171B * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 23 cores; 191.9 m cored; 0 m drilled; 54.4 % recovery
171-1050A  * Latitude: 30.099940 * Longitude: -76.235000 * Date/Time: 1997-01-17T01:30:00 * Elevation: -2299.8 m * Penetration: 319.9 m * Recovery: 293.7 m * Location: Blake Nose, North Atlantic Ocean * Campaign: Leg171B * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 36 cores; 319.9 m cored; 0 m drilled; 91.8 % recovery
171-1050C  * Latitude: 30.099910 * Longitude: -76.234970 * Date/Time: 1997-02-08T19:30:00 * Elevation: -2296.5 m * Penetration: 606 m * Recovery: 200.19 m * Location: Blake Nose, North Atlantic Ocean * Campaign: Leg171B * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 31 core; 288.5 m cored; 317.5 m drilled; 69.4 % recovery
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEvent
2 Longitude of eventLongitude
3 Latitude of eventLatitude
4 Elevation of eventElevationm
5 Sample code/labelSample labelUssler, William IIIDSDP/ODP/IODP sample designation
6 DEPTH, sediment/rockDepth sedmGeocode – mbsf
7 Strontium 2+Sr2+µg/lUssler, William IIIIsotope dilution mass spectrometrypore-water
8 Strontium-87/Strontium-86 ratio87Sr/86SrUssler, William IIIMass spectrometer VG Sector 54of pore-water
9 Strontium-87/Strontium-86 ratio87Sr/86SrUssler, William IIIMass spectrometer VG Sector 54of sedimentary carbonate
10 Age, datedAge datedkaUssler, William IIIAge, strontium isotope, LOWESS fit Howarth & McArthur (1997)pore-water age
11 Age, datedAge datedkaUssler, William IIIhost sediment age; obtained using short linear regressions between hiatuses fit to age vs. depth plots derived from biostratigraphy
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
478 data points

Data

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

1 
Event		2 
Longitude		3 
Latitude		4 
Elevation [m]		5 
Sample label
(DSDP/ODP/IODP sample designation)		6 
Depth sed [m]
(mbsf)		7 
Sr2+ [µg/l]
(pore-water, Isotope dilution ...)		8 
87Sr/86Sr
(of pore-water, Mass spectrome...)		9 
87Sr/86Sr
(of sedimentary carbonate, Mas...)		10 
Age dated [ka]
(pore-water age, Age, strontiu...)		11 
Age dated [ka]
(host sediment age; obtained u...)
171-1049A -76.112230.1424-2656171B-1049A-3H25.057.240.7091281210
171-1049A-76.112230.1424-2656171B-1049A-4H34.557.330.709098170041000
171-1049A-76.112230.1424-2656171B-1049A-5H44.055.450.709105153043000
171-1049A-76.112230.1424-2656171B-1049A-6H53.557.630.709076260045000
171-1049A-76.112230.1424-2656171B-1049A-9H66.357.770.708986616049500
171-1049A-76.112230.1424-2656171B-1049A-10X70.857.850.708966661051000
171-1049A-76.112230.1424-2656171B-1049A-12X87.557.810.708924903053000
171-1049A-76.112230.1424-2656171B-1049A-16X116.458.160.7088361238064000
171-1049A-76.112230.1424-2656171B-1049A-19X148.358.380.70869516910108000
171-1049A-76.112230.1424-2656171B-1049A-22X173.408.350.70871216470114000
171-1050A -76.235030.0999-2300171B-1050A-1X4.458.440.7089510.707763704039300
171-1050A-76.235030.0999-2300171B-1050A-2H14.558.700.7088820.7077621050040000
171-1050A-76.235030.0999-2300171B-1050A-3H24.059.070.7088210.7077721280040600
171-1050A-76.235030.0999-2300171B-1050A-4H33.559.400.7087570.7077751559041300
171-1050A-76.235030.0999-2300171B-1050A-5H43.0510.060.7086670.7077721720041900
171-1050A-76.235030.0999-2300171B-1050A-6H52.5510.820.7085170.7077471908042600
171-1050A-76.235030.0999-2300171B-1050A-9H80.6212.750.7083620.7077642160044500
171-1050A-76.235030.0999-2300171B-1050A-13X119.2515.160.7082280.7077692429047200
171-1050A-76.235030.0999-2300171B-1050A-16X148.0518.160.7080690.7077772754049200
171-1050A-76.235030.0999-2300171B-1050A-19X176.8521.630.7079950.7077142952051100
171-1050A-76.235030.0999-2300171B-1050A-22X203.6025.230.7079610.7077153047053000
171-1050A-76.235030.0999-2300171B-1050A-26X240.6030.600.7078480.7077533319055500
171-1050A-76.235030.0999-2300171B-1050A-29X261.3032.360.7078200.7077243394056900
171-1050A-76.235030.0999-2300171B-1050A-32X288.6029.430.7078260.7077933378058800
171-1050A-76.235030.0999-2300171B-1050A-35X309.3033.270.7078030.7078113442060200
171-1050C -76.235030.0999-2296171B-1050C-2R330.0036.320.7077940.7078283470061700
171-1050C-76.235030.0999-2296171B-1050C-5R361.5636.780.7077860.7078053497061700
171-1050C-76.235030.0999-2296171B-1050C-8R386.2438.380.7077560.7078213626063600
171-1050C-76.235030.0999-2296171B-1050C-13R427.6436.660.7077590.7078493611066800
171-1050C-76.235030.0999-2296171B-1050C-17R464.6536.170.7077420.7078123713069700
171-1050C-76.235030.0999-2296171B-1050C-21R502.720.70747993400
171-1050C-76.235030.0999-2296171B-1050C-23R523.720.70742595500
171-1050C-76.235030.0999-2296171B-1050C-26R551.2532.360.7077640.7074263586098100
171-1050C-76.235030.0999-2296171B-1050C-29R580.0534.960.7074900.70743536650100900
171-1050C-76.235030.0999-2296171B-1050C-31R599.2531.360.7078020.70744434440102800
171-1051A -76.357630.0529-1983171B-1051A-2H10.257.580.709008563038100
171-1051A-76.357630.0529-1983171B-1051A-3H19.757.440.7088791060038300
171-1051A-76.357630.0529-1983171B-1051A-4H29.259.500.7087931424038600
171-1051A-76.357630.0529-1983171B-1051A-5H38.759.640.7086781704038800
171-1051A-76.357630.0529-1983171B-1051A-6H48.2510.560.7085961813039000
171-1051A-76.357630.0529-1983171B-1051A-7H57.7511.230.7085461873039300
171-1051A-76.357630.0529-1983171B-1051A-10H86.2513.430.7083892107040000
171-1051A-76.357630.0529-1983171B-1051A-13H114.7517.020.7082362413040700
171-1051A-76.357630.0529-1983171B-1051A-16H143.2018.960.7081682541041500
171-1051A-76.357630.0529-1983171B-1051A-19X172.2020.870.7081112659042200
171-1051A-76.357630.0529-1983171B-1051A-22X201.0021.090.7080632768042900
171-1051A-76.357630.0529-1983171B-1051A-25X229.8024.190.7080052925043700
171-1051A-76.357630.0529-1983171B-1051A-28X258.6026.290.7079603049044400
171-1051A-76.357630.0529-1983171B-1051A-31X287.4034.520.7079633042045200
171-1051A-76.357630.0529-1983171B-1051A-34X316.2034.550.7079133165045900
171-1051A-76.357630.0529-1983171B-1051A-37X345.1037.340.7078923217046600
171-1051A-76.357630.0529-1983171B-1051A-40X374.1038.180.7078833238047400
171-1051A-76.357630.0529-1983171B-1051A-43X403.9060.830.7077873494051900
171-1051A-76.357630.0529-1983171B-1051A-46X432.7063.410.7077853501052800
171-1051A-76.357630.0529-1983171B-1051A-49X458.5060.360.7077893487053700
171-1051A-76.357630.0529-1983171B-1051A-53X490.5064.960.7077713556054700
171-1051A-76.357630.0529-1983171B-1051A-56X522.2568.340.7077603606056600
171-1051A-76.357630.0529-1983171B-1051A-59X548.0576.340.7077463685058000
171-1051A-76.357630.0529-1983171B-1051A-65X596.1576.940.7077373751060600
171-1052A -76.626629.9515-1344171B-1052A-2X7.957.550.7088761070034000
171-1052A-76.626629.9515-1344171B-1052A-3H17.659.220.7087121651034600
171-1052A-76.626629.9515-1344171B-1052A-4H27.1510.610.7085491869035100
171-1052A-76.626629.9515-1344171B-1052A-5H36.6511.540.7084252042035600
171-1052A-76.626629.9515-1344171B-1052A-6H46.1512.970.7083182249036200
171-1052A-76.626629.9515-1344171B-1052A-7H55.6514.360.7082412404036700
171-1052A-76.626629.9515-1344171B-1052A-10H84.1517.930.7080652763038300
171-1052A-76.626629.9515-1344171B-1052A-13H112.6522.860.7079103173039900
171-1052A-76.626629.9515-1344171B-1052A-16X132.6524.200.7079053185041000
171-1052A-76.626629.9515-1344171B-1052A-18X150.1530.230.7077993454042000
171-1052E -76.626829.9513-1344171B-1052E-2R147.3330.380.7077973460041900
171-1052E-76.626829.9513-1344171B-1052E-8R206.8550.930.7076607363060800
171-1052E-76.626829.9513-1344171B-1052E-10R227.6055.100.7076427424061700
171-1052E-76.626829.9513-1344171B-1052E-12R245.0954.700.7076107568062400
171-1052E-76.626829.9513-1344171B-1052E-14R262.7958.870.7075088168063200
171-1052E-76.626829.9513-1344171B-1052E-20R323.6576.020.7075168110065700
171-1052E-76.626829.9513-1344171B-1052E-23R351.1873.940.7075407953066900
171-1052E-76.626829.9513-1344171B-1052E-26R381.4578.240.7075407953068100
171-1052E-76.626829.9513-1344171B-1052E-29R410.2585.340.7075208082069300
171-1052E-76.626829.9513-1344171B-1052E-33R444.6379.590.7075028204070800
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171-1052E-76.626829.9513-1344171B-1052E-49R603.17131.250.70740386360100800
171-1052E-76.626829.9513-1344171B-1052E-52R624.55146.440.70734288200101200
171-1052E-76.626829.9513-1344171B-1052E-55R649.25138.870.70738786890101800
171-1053A -76.523529.9923-1630171B-1053A-1H4.457.610.708997580034200
171-1053A-76.523529.9923-1630171B-1053A-3H23.4510.330.7085821831034600
171-1053A-76.523529.9923-1630171B-1053A-4H32.9511.950.7085021927034800
171-1053A-76.523529.9923-1630171B-1053A-5H42.4512.780.7083722141035000
171-1053A-76.523529.9923-1630171B-1053A-5H42.4512.780.7083852115035000
171-1053A-76.523529.9923-1630171B-1053A-6H51.9514.190.7082982292035200
171-1053A-76.523529.9923-1630171B-1053A-9H80.4517.740.7081232633035800
171-1053A-76.523529.9923-1630171B-1053A-12H108.4521.920.7080162895036400
171-1053A-76.523529.9923-1630171B-1053A-15H137.4528.020.7079313121037000