Boersma, Anne; Mikkelsen, Naja (1990): Stable carbon and oxygen isotope ratios of planktonic and benthic foraminifera of ODP Hole 115-714B (Table 1) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.755942, Supplement to: Boersma, A; Mikkelsen, N (1990): Miocene-Age primary productivity episodes and oxygen minima in the central equatorial Indian Ocean. In: Duncan, RA; Backmann, J; Peterson, LC; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 115, 589-609, https://doi.org/10.2973/odp.proc.sr.115.162.1990
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Published: 1990 (exact date unknown) • DOI registered: 2011-02-15
Abstract:
Combined data on benthic foraminifers, siliceous fossils, and stable isotopes depict times of enhanced organic carbon oxidation in the sediments and high primary productivity in the southern Indian upwelling zone during the Miocene. Increased abundance of the diatom productivity index, the Thalassionema group, elevated diatom and uvigerinid abundances, and bolivinid diversity all suggest heightened primary productivity and the development of a mid-depth oxygen minimum between ~17 and 10 Ma.
The abundance of bolivinids with large pores and crenulate chamber surfaces may indicate more aerated pore waters in the upper few centimeters of the partly siliceous sediments deposited during the episode of higher primary productivity and increased organic carbon flux around 10 Ma.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 5.060000 * Longitude: 73.786700
Date/Time Start: 1987-06-24T04:15:00 * Date/Time End: 1987-06-24T14:30:00
Minimum DEPTH, sediment/rock: 26.5 m * Maximum DEPTH, sediment/rock: 205.0 m
Event(s):
115-714B * Latitude: 5.060000 * Longitude: 73.786700 * Date/Time Start: 1987-06-24T04:15:00 * Date/Time End: 1987-06-24T14:30:00 * Elevation: -2041.0 m * Penetration: 122.6 m * Recovery: 114.93 m * Location: Lakshadweep Sea * Campaign: Leg115 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 13 cores; 122.6 m cored; 0 m drilled; 93.7 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 2 | Globigerinoides sacculifer, δ18O | G. sacculifer δ18O | ‰ PDB | Boersma, Anne | ||
| 3 | Globigerinoides sacculifer, δ13C | G. sacculifer δ13C | ‰ PDB | Boersma, Anne | ||
| 4 | Cassidulinoides cornuta, δ18O | C. cornuta δ18O | ‰ PDB | Boersma, Anne | ||
| 5 | Cassidulinoides cornuta, δ13C | C. cornuta δ13C | ‰ PDB | Boersma, Anne | ||
| 6 | Cibicides wuellerstorfi, δ18O | C. wuellerstorfi δ18O | ‰ PDB | Boersma, Anne | ||
| 7 | Cibicides wuellerstorfi, δ13C | C. wuellerstorfi δ13C | ‰ PDB | Boersma, Anne | ||
| 8 | Cibicidoides spp., δ18O | Cibicidoides spp. δ18O | ‰ PDB | Boersma, Anne | ||
| 9 | Cibicidoides spp., δ13C | Cibicidoides spp. δ13C | ‰ PDB | Boersma, Anne | ||
| 10 | Globocassidulina subglobosa, δ18O | G. subglobosa δ18O | ‰ PDB | Boersma, Anne | ||
| 11 | Globocassidulina subglobosa, δ13C | G. subglobosa δ13C | ‰ PDB | Boersma, Anne | ||
| 12 | Planulina renzi, δ18O | P. renzi δ18O | ‰ PDB | Boersma, Anne | ||
| 13 | Planulina renzi, δ13C | P. renzi δ13C | ‰ PDB | Boersma, Anne | ||
| 14 | Rectuvigerina spinea, δ18O | R. spinea δ18O | ‰ PDB | Boersma, Anne | ||
| 15 | Rectuvigerina spinea, δ13C | R. spinea δ13C | ‰ PDB | Boersma, Anne | ||
| 16 | Uvigerina spp., δ18O | Uvigerina spp. δ18O | ‰ PDB | Boersma, Anne | ||
| 17 | Uvigerina spp., δ13C | Uvigerina spp. δ13C | ‰ PDB | Boersma, Anne |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
318 data points