Petrizzo, Maria Rose; Huber, Brian T; Wilson, Paul A; MacLeod, Kenneth G (2008): Late Albian foraminiferal carbon and oxygen isotope data and biostratigraphic datums from ODP holes 171-1050C and 171-1052E [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.748728, Supplement to: Petrizzo, MR et al. (2008): Late Albian paleoceanography of the western subtropical North Atlantic. Paleoceanography, 23(1), PA1213, https://doi.org/10.1029/2007PA001517
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Abstract:
A late Albian-early Cenomanian record (~103.3 to 99.0 Ma), including organic-rich deposits and a d13C increase associated with oceanic anoxic event 1d (OAE 1d), is described from Ocean Drilling Program sites 1050 and 1052 in the subtropical Atlantic. Foraminifera are well preserved at these sites. Paleotemperatures estimated from benthic d18O values average ~14°C for middle bathyal Site 1050 and ~17°C for upper bathyal Site 1052, whereas surface temperatures are estimated to have ranged from 26°C to 31°C at both sites. Among planktonic foraminifera, there is a steady balance of speciation and extinction with no discrete time of major faunal turnover. OAE 1d is recognized on the basis of a 1.2 per mill d13C increase (~100.0-99.6 Ma), which is similar in age and magnitude to d13C excursions documented in the North Atlantic and western Tethys. Organic-rich "black shales" are present throughout the studied interval at both sites. However, deposition of individual black shale beds was not synchronous between sites, and most of the black shale was deposited before the OAE 1d d13C increase. A similar pattern is observed at the other sites where OAE 1d has been recognized indicating that the site(s) of excess organic carbon burial that could have caused the d13C increase has (have) yet to be found. Our findings add weight to the view that OAEs should be chemostratigraphically (d13C) rather than lithostratigraphically defined.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 30.025605 * Median Longitude: -76.430885 * South-bound Latitude: 29.951300 * West-bound Longitude: -76.626800 * North-bound Latitude: 30.099910 * East-bound Longitude: -76.234970
Date/Time Start: 1997-02-01T02:00:00 * Date/Time End: 1997-02-08T19:30:00
Event(s):
171-1050C * Latitude: 30.099910 * Longitude: -76.234970 * Date/Time: 1997-02-08T19:30:00 * Elevation: -2296.5 m * Penetration: 606 m * Recovery: 200.19 m * Location: Blake Nose, North Atlantic Ocean * Campaign: Leg171B * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 31 core; 288.5 m cored; 317.5 m drilled; 69.4 % recovery
171-1052E * Latitude: 29.951300 * Longitude: -76.626800 * Date/Time: 1997-02-01T02:00:00 * Elevation: -1343.5 m * Penetration: 684.8 m * Recovery: 327.9 m * Location: Blake Nose, North Atlantic Ocean * Campaign: Leg171B * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 58 cores; 544.6 m cored; 140 m drilled; 60.2 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets
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Datasets listed in this publication series
- Petrizzo, MR; Huber, BT; Wilson, PA et al. (2008): (Table S1) Late Albian foraminiferal carbon and oxygen isotope data from ODP Hole 171-1050C. https://doi.org/10.1594/PANGAEA.748478
- Petrizzo, MR; Huber, BT; Wilson, PA et al. (2008): (Table S2) Late Albian foraminiferal carbon and oxygen isotope data from ODP Hole 171-1052E. https://doi.org/10.1594/PANGAEA.748726
- Petrizzo, MR; Huber, BT; Wilson, PA et al. (2008): (Table 1) Biostratigraphic datums for ODP holes 171-1050C and 171-1052E. https://doi.org/10.1594/PANGAEA.753077