Etourneau, Johan; Martinez, Philippe; Blanz, Thomas; Schneider, Ralph R (2009): (Figure DR1) Age model and linear sedimentation rates of ODP SIte 175-1082 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.729402, In supplement to: Etourneau, J et al. (2009): Pliocene–Pleistocene variability of upwelling activity, productivity, and nutrient cycling in the Benguela region. Geology, 37(10), 871-874, https://doi.org/10.1130/G25733A.1
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Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: -21.094194 * Longitude: 11.820556
Date/Time Start: 1997-09-13T00:00:00 * Date/Time End: 1997-09-13T00:00:00
Minimum DEPTH, sediment/rock: 0.00 m * Maximum DEPTH, sediment/rock: 380.80 m
Event(s):
175-1082 * Latitude: -21.094194 * Longitude: 11.820556 * Date/Time: 1997-09-13T00:00:00 * Elevation: -1280.6 m * Penetration: 929.6 m * Recovery: 853 m * Location: Benguela Current, South Atlantic Ocean * Campaign: Leg175 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 102 cores; 929.6 m cored; 0 m drilled; 91.8% recovery
Comment:
The Brunhes/Matuyama (0.75 Ma) and Matuyama/Gauss (2.54 Ma) paleomagnetic boundaries were established using shipboard measurements of natural remanent magnetization (NRM) such as inclination reconstructions (Wefer et al., 1998 doi:10.2973/odp.proc.ir.175.110.1998). An existing age model based on oxygen isotope (delta18O) records from planktonic (Globorotalia inflata) and benthic (Cibicoides wuellerstorfi) foraminifera (Dupont et al., 2005 doi:10.1130/G21401.1) was compared to the alkenone record and the LR04 benthic foraminifera oxygen isotope stack (Lisiecki and Raymo, 2005 doi:10.1029/2004PA001071). Through graphical correlations of peaks obtained from Analyseries 1.2 software (Paillard et al., 1996 doi:10.1029/96EO00259), we improved the previous age model for the past 3.5 Ma at Site 1082. The Pleistocene high resolution alkenone record (1.5-0 Ma) clearly revealed the last fifty glacial/interglacial stages. Patterns of change (3.5-2.8 Ma) in delta18O from benthic foraminifera (Site 1082 and LR04 stack) showed outstanding similarities for the oldest part of the record. For the intermediate period (2.8-1.5 Ma), strong cooling events (Marine Isotopic Stages 58, 78, 82, 96, 100, G6 and G14) were identified in our SST record in agreement with a high resolution alkenone record from the Eastern Equatorial Pacific (Lawrence et al., 2006 doi:10.1126/science.1120395).
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 2 | Depth, composite | Depth comp | mcd | Etourneau, Johan | Intercore correlation | |
| 3 | Age model | Age model | ka | Etourneau, Johan | Age model according to Lisiecki & Raymo (2005) [LR04] | |
| 4 | Sedimentation rate | SR | cm/ka | Etourneau, Johan | Calculated |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
759 data points