Barnet, James S K; Littler, Kate; Kroon, Dick; Leng, Melanie J; Westerhold, Thomas; Röhl, Ursula; Zachos, James C (2017): Late Maastrichtian-early Paleocene benthic stable carbon and oxygen isotope records from ODP Site 208-1262, South Atlantic [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.881019, Supplement to: Barnet, JSK et al. (2017): A new high-resolution chronology for the late Maastrichtian warming event: Establishing robust temporal links with the onset of Deccan volcanism. Geology, 46(2), 147-150, https://doi.org/10.1130/G39771.1
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Published: 2017-09-26 • DOI registered: 2017-10-26
Abstract:
The late Maastrichtian warming event was defined by a global temperature increase of about 2.5-5°C, which occurred ~150-300 kyr before the K/Pg (Cretaceous/Paleogene) mass extinction. This transient warming event has traditionally been associated with a major pulse of Deccan Trap volcanism, however large uncertainties on radiogenic dating methods have long hampered a definitive correlation. Here we present a high-resolution, single-species benthic stable isotope record from the South Atlantic, calibrated to a new high resolution orbitally-tuned age model, to provide a revised chronology of the event, which we then correlate to the latest radiogenic dates of the main Deccan Trap eruption phases. The onset of deep-sea warming is synchronous with a 405-kyr eccentricity minimum, excluding a control by orbital forcing alone, although amplified carbon cycle sensitivity to orbital precession is evident during the greenhouse warming. Our data reveals that the initiation of deep-sea warming coincides, within uncertainty, with the onset of the main phase of Deccan volcanism, strongly suggesting a causal link.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: -27.185833 * Longitude: 1.577000
Date/Time Start: 2003-03-24T00:00:00 * Date/Time End: 2003-03-29T00:00:00
Minimum DEPTH, sediment/rock: 193.31 m * Maximum DEPTH, sediment/rock: 212.66 m
Event(s):
208-1262 * Latitude: -27.185833 * Longitude: 1.577000 * Date/Time Start: 2003-03-24T00:00:00 * Date/Time End: 2003-03-29T00:00:00 * Elevation: -4755.4 m * Penetration: 583.9 m * Recovery: 502.5 m * Location: Walvis Ridge, Southeast Atlantic Ocean * Campaign: Leg208 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 54 cores; 493.9 m cored; 90 m drilled; 101.7 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Barnet, James S K | DSDP/ODP/IODP sample designation | ||
| 2 | DEPTH, sediment/rock | Depth sed | m | Barnet, James S K | Geocode – mbsf | |
| 3 | Foraminifera, benthic δ13C | Foram benth δ13C | ‰ PDB | Barnet, James S K | vs. VPDB | |
| 4 | Foraminifera, benthic δ18O | Foram benth δ18O | ‰ PDB | Barnet, James S K | vs. VPDB | |
| 5 | DEPTH, sediment/rock | Depth sed | m | Barnet, James S K | Geocode – midpoint mbsf | |
| 6 | Depth, composite | Depth comp | mcd | Barnet, James S K | midpoint | |
| 7 | AGE | Age | ka BP | Barnet, James S K | Geocode – this study | |
| 8 | δ18O, adjusted/corrected | δ18O | ‰ | Barnet, James S K | corrected to Cibicidoides | |
| 9 | Bottom water temperature | BWT | °C | Barnet, James S K | Nuttallides | |
| 10 | Bottom water temperature | BWT | °C | Barnet, James S K | Cibicides |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4122 data points
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