Gieskes, Joris M; Lawrence, James R; Perry, Jr, Edward A; Grady, S J; Elderfield, Henry (1987): (Table 2) 87Sr/86Sr ratios of DSDP Site 38-336 samples [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.705147, Supplement to: Gieskes, JM et al. (1987): Chemistry of interstitial waters and sediments in the Norwegian-Greenland Sea, Deep Sea Drilling Project Leg 38. Chemical Geology, 63(1-2), 143-155, https://doi.org/10.1016/0009-2541(87)90081-7
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Abstract:
Interstitial waters of several sites drilled during the Deep Sea Drilling Project in the Norwegian-Greenland Sea during Leg 38 have revealed substantial changes in dissolved constituents and in the 18O/16O composition of interstitial waters. Studies of the chemical composition of the bulk sediments and their <1µm fraction indicate the presence of large amounts of volcanic ash, especially in sites close to Iceland. The presence of authigenic clay minerals (illite/smectite) suggests that alteration of this volcanic ash is an important process. A study of Site 348 reveals that dissolved Ca gradients are caused mainly by transport from the underlying basalts, but that decreases in Mg and d18O (H2O) are largely due to reactions involving alteration of volcanic ash in the sediments. Studies of 87Sr/86Sr distributions of dissolved Sr confirm this process in those sites with high contents of volcanic matter. On the other hand, in sites where the chemical composition of dissolved constituents has been little influenced by alteration reactions. 87Sr/86Sr ratios reveal complete diffusive exchange with present-day seawater.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 63.351000 * Longitude: -7.787800
Date/Time Start: 1974-08-07T00:00:00 * Date/Time End: 1974-08-07T00:00:00
Minimum DEPTH, sediment/rock: 430.0 m * Maximum DEPTH, sediment/rock: 496.0 m
Event(s):
38-336 * Latitude: 63.351000 * Longitude: -7.787800 * Date/Time: 1974-08-07T00:00:00 * Elevation: -811.0 m * Penetration: 515 m * Recovery: 219.9 m * Location: North Atlantic/Norwegian Sea * Campaign: Leg38 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 42 cores; 383.5 m cored; 19 m drilled; 57.3 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 2 | Sample code/label | Sample label | Gieskes, Joris M | DSDP/ODP/IODP sample designation | ||
| 3 | Sample type | Samp type | Gieskes, Joris M | |||
| 4 | Strontium-87/Strontium-86 ratio | 87Sr/86Sr | Gieskes, Joris M | |||
| 5 | Strontium-87/Strontium-86 ratio, error | 87Sr/86Sr e | ± | Gieskes, Joris M |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
52 data points
Data
| 1 Depth sed [m] | 2 Sample label | 3 Samp type | 4 87Sr/86Sr | 5 87Sr/86Sr e [±] |
|---|---|---|---|---|
| 430.0 | 336-35-3 | interstitial water; 0.2 mM Sr | 0.70694 | 0.00005 |
| 431.5 | 336-35-4 | unleached basal sediment; mudstone 70% clay minerals, 15% palagonite, 10% feldspar, 0.02-0.11% CaCO3, 149 ppm Sr, 40 ppm Rb | 0.70395 | 0.00003 |
| 431.5 | 336-35-4 | similar sample | 0.70535 | 0.00003 |
| 431.5 | 336-35-4 | HCl leachate | 0.70465 | 0.00003 |
| 431.5 | 336-35-4 | HCl leachate, duplicate | 0.70498 | 0.00005 |
| 480.0 | 336-39-3 | interstitial water; 0.055 mM Sr | 0.70719 | 0.00005 |
| 481.5 | 336-39-4 | untreated basalt from breccia volcanic rubble with 1-40 mm clasts, altered basalt; 57.6 ppm Sr, 29 ppm Rb | 0.70729 | 0.00007 |
| 481.5 | 336-39-4 | similar sample | 0.70611 | 0.00005 |
| 481.5 | 336-39-4 | separated zeolite | 0.70480 | 0.00009 |
| 481.5 | 336-39-4 | HCl leachate of zeolite | 0.70704 | 0.00006 |
| 485.0 | 336-41-1 | basalt; 137 ppm Sr, Rb/Sr = 0.018 | 0.70355 | 0.00005 |
| 487.0 | 336-42-1 | basalt; 144 ppm Sr, Rb/Sr = 0.006 | 0.70359 | 0.00004 |
| 496.0 | 336-43-1 | vein calcite from basalt | 0.70664 | 0.00006 |