Furnes, Harald; Muehlenbachs, Karlis; Torsvik, Terje; Thorseth, Ingunn H; Tumyr, Ole (2001): (Table 1) Age, thickness of sedimentary cover, depth into volcanic basement, calcite content, and carbon and oxygen isotope data of glassy and crystalline samples from the Atlantic Ocean and the Lau Basin [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.700964, Supplement to: Furnes, H et al. (2001): Microbial fractionation of carbon isotopes in altered basaltic glass from the Atlantic Ocean, Lau Basin and Costa Rica Rift. Chemical Geology, 173(4), 313-330, https://doi.org/10.1016/S0009-2541(00)00285-0
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Abstract:
Textural and DNA studies of pillow lavas in DSDP/ODP cores from the Atlantic Ocean, the Lau Basin and the Costa Rica Rift indicate that microbes had a significant role in the alteration of basaltic glasses. Carbon isotopes (d13C) in carbonates from glassy and crystalline basalts from these locations also show differences that may relate to microbial activity during alteration. The generally low d13C values (< -7 per mil) in the basaltic glass of a high proportion of samples from the Atlantic, and most of the Costa Rica Rift material were attributed to alteration influenced by Bacteria and oxidation of organic matter. Positive d13C values of some samples from the Atlantic suggest lithotrophic utilization of CO2, in which methanogenic Archaea produced CH4 from H2 and CO2. This may result from higher abiotic production of H2 in the slow-spreading, fault-dominated Atlantic crust, due to more extensive serpentinization than at the intermediate-spreading Costa Rica Rift.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 37.345463 * Median Longitude: -49.755000 * South-bound Latitude: -18.568000 * West-bound Longitude: -177.862000 * North-bound Latitude: 63.938700 * East-bound Longitude: -25.952800
Date/Time Start: 1976-02-06T00:00:00 * Date/Time End: 1990-12-31T08:40:00
Minimum DEPTH, sediment/rock: 0.40 m * Maximum DEPTH, sediment/rock: 230.10 m
Event(s):
46-396B * Latitude: 22.985667 * Longitude: -43.515000 * Date/Time: 1976-02-06T00:00:00 * Elevation: -4459.0 m * Penetration: 405.5 m * Recovery: 63.56 m * Campaign: Leg46 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL)
49-407 * Latitude: 63.938700 * Longitude: -30.576000 * Date/Time: 1976-07-23T00:00:00 * Elevation: -2472.0 m * Penetration: 458.5 m * Recovery: 171.6 m * Location: North Atlantic/RIDGE * Campaign: Leg49 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 40 cores; 382.5 m cored; 57 m drilled; 44.9 % recovery
49-408 * Latitude: 63.377200 * Longitude: -28.911800 * Date/Time: 1976-07-29T00:00:00 * Elevation: -1624.0 m * Penetration: 361 m * Recovery: 218.4 m * Location: North Atlantic/RIDGE * Campaign: Leg49 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 37 cores; 351.5 m cored; 9.5 m drilled; 62.1 % 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 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 5 | Sample code/label | Sample label | Furnes, Harald | DSDP/ODP/IODP sample designation | ||
| 6 | Comment | Comment | Furnes, Harald | |||
| 7 | Age, dated | Age dated | ka | Furnes, Harald | ||
| 8 | Age, maximum/old | Age max | ka | Furnes, Harald | ||
| 9 | Age, minimum/young | Age min | ka | Furnes, Harald | ||
| 10 | Sediment thickness | Sed thick | m | Furnes, Harald | ||
| 11 | Sample comment | Sample comment | Furnes, Harald | |||
| 12 | Calcite | Cal | % | Furnes, Harald | ||
| 13 | δ13C | δ13C | ‰ PDB | Furnes, Harald | Mass spectrometer Finnigan MAT 251 | |
| 14 | δ18O | δ18O | ‰ | Furnes, Harald | Mass spectrometer Finnigan MAT 251 | with respect to SMOW |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
488 data points