Haggerty, Janet A; Chaudhuri, Sambhudas (1992): (Table 1) Strontium isotopic ratios of interstitial waters from ODP Leg 125 holes [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.770845, Supplement to: Haggerty, JA; Chaudhuri, S (1992): Strontium isotopic composition of the interstitial waters from Leg 125: Mariana and Bonin Forearcs. In: Fryer, P; Pearce, JA; Stokking, LB; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 125, 397-400, https://doi.org/10.2973/odp.proc.sr.125.124.1992
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Abstract:
The strontium isotopic data presented here are from interstitial waters squeezed from unconsolidated serpentine, an unusual type of substrate that was recovered from Mariana and Bonin forearc seamounts and has not been previously drilled by the Deep Sea Drilling Project or Ocean Drilling Program. The texture and composition of some of these serpentine deposits from Conical Seamount, located on the Mariana forearc, indicate emplacement as low- or high-viscosity, cold gravitational flows, which are therefore neither sediment nor igneous rock.
The strontium isotopic ratios of the interstitial waters from the unconsolidated serpentine range from 0.70912 to 0.70525 and trend toward a relatively less radiogenic composition with increasing sub-bottom depth. These strontium isotopic ratios are derived from at least two strontium sources: seawater and igneous. The strontium isotopic gradients from the interstitial waters from the Leg 125 sites are probably the result of diffusive transport of strontium from an igneous source deep within the lithosphere that may be contaminated with subducted or underplated sediment.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 22.398625 * Median Longitude: 145.407550 * South-bound Latitude: 19.512500 * West-bound Longitude: 141.738000 * North-bound Latitude: 30.908000 * East-bound Longitude: 146.696000
Date/Time Start: 1989-02-28T10:00:00 * Date/Time End: 1989-03-31T10:00:00
Minimum DEPTH, sediment/rock: 3.9 m * Maximum DEPTH, sediment/rock: 399.5 m
Event(s):
125-779A * Latitude: 19.512500 * Longitude: 146.696000 * Date/Time Start: 1989-02-28T10:00:00 * Date/Time End: 1989-03-04T03:00:00 * Elevation: -3958.0 m * Penetration: 317.2 m * Recovery: 73.24 m * Location: North Pacific Ocean * Campaign: Leg125 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 37 cores; 317.2 m cored; 0 m drilled; 23.1 % recovery
125-780C * Latitude: 19.542200 * Longitude: 146.653500 * Date/Time Start: 1989-03-06T05:00:00 * Date/Time End: 1989-03-09T04:30:00 * Elevation: -3095.0 m * Penetration: 163.5 m * Recovery: 14.44 m * Location: North Pacific Ocean * Campaign: Leg125 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 18 cores; 163.5 m cored; 0 m drilled; 8.8 % recovery
125-781A * Latitude: 19.631800 * Longitude: 146.542700 * Date/Time Start: 1989-03-11T03:30:00 * Date/Time End: 1989-03-13T19:00:00 * Elevation: -4432.0 m * Penetration: 250 m * Recovery: 39.62 m * Location: North Pacific Ocean * Campaign: Leg125 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 27 cores; 247 m cored; 0 m drilled; 16 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample code/label | Sample label | Haggerty, Janet A | DSDP/ODP/IODP sample designation | ||
| 3 | DEPTH, sediment/rock | Depth sed | m | Geocode – mbsf | ||
| 4 | Strontium-87/Strontium-86 ratio | 87Sr/86Sr | Haggerty, Janet A | Isotope ratio mass spectrometry | ||
| 5 | Strontium-87/Strontium-86 ratio, error | 87Sr/86Sr e | ± | Haggerty, Janet A | Isotope ratio mass spectrometry |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
27 data points