Bralower, Timothy J; Kump, Lee R; Self-Trail, Jean; Robinson, Marci M; Lyons, Shelby; Babila, Tali L; Ballaron, Edward; Freeman, Katherine H; Hajek, Elizabeth; Rush, William; Zachos, James C (2018): Carbonate, stable isotope data, abundance of pyrite and siderite, pyrite alteration and nannofossil Whole Shield Index during the PETM [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.896839, Supplement to: Bralower, TJ et al. (2018): Evidence for shelf acidification during the onset of the Paleocene-Eocene Thermal Maximum. Paleoceanography and Paleoclimatology, https://doi.org/10.1029/2018PA003382
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Abstract:
A transect of paleoshelf cores from Maryland and New Jersey contains an ~0.19 m to 1.61 m thick interval with reduced percentages of carbonate during the onset of the Paleocene‐Eocene Thermal Maximum (PETM). Outer paleoshelf cores are barren of nannofossils and correspond to two minor disconformities. Middle paleoshelf cores contain a mixture of samples devoid of nannofossils and those with rare specimens characterized by significant dissolution (i.e., etching). The magnitude of the decrease in carbonate cannot be explained by dilution by clastic material or dissolution resulting from the oxidation of organic matter during early diagenesis. The observed preservation pattern implies a shoaling of the calcite compensation depth (CCD) and lysocline to the middle shelf. This reduced carbonate interval is observed during the onset of the PETM on other continental margins raising the possibility that extreme shoaling of the CCD and lysocline was a global signal, which is more significant than in previous estimates for the PETM. An alternative scenario is that shoaling was restricted to the northwest Atlantic, enhanced by regional and local factors (eutrophication from rivers, microbial activity associated with warming) that exacerbated the impact of acidification on the shelf.
Coverage:
Median Latitude: 39.023439 * Median Longitude: -75.680074 * South-bound Latitude: 38.260000 * West-bound Longitude: -77.076000 * North-bound Latitude: 39.655800 * East-bound Longitude: -74.436700
Date/Time Start: 1996-10-18T00:00:00 * Date/Time End: 2007-10-01T00:00:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
8 datasets
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Datasets listed in this publication series
- Bralower, TJ; Kump, LR; Self-Trail, J et al. (2018): Carbonate, abundance of pyrite and siderite and nannofossil Whole Shield Index during the PETM at Bass River Site. https://doi.org/10.1594/PANGAEA.896831
- Bralower, TJ; Kump, LR; Self-Trail, J et al. (2018): Carbonate, stable isotopes, abundance of pyrite and siderite and nannofossil Whole Shield Index during the PETM at CamDor. https://doi.org/10.1594/PANGAEA.896832
- Bralower, TJ; Kump, LR; Self-Trail, J et al. (2018): Carbonate, stable isotopes, abundance of pyrite and siderite and nannofossil Whole Shield Index during the PETM at Howards Tract core 2. https://doi.org/10.1594/PANGAEA.896834
- Bralower, TJ; Kump, LR; Self-Trail, J et al. (2018): Nannofossil Whole Shield Index during the PETM at MCBR. https://doi.org/10.1594/PANGAEA.896835
- Bralower, TJ; Kump, LR; Self-Trail, J et al. (2018): Carbonate, abundance of pyrite and siderite and nannofossil Whole Shield Index during Pthe PETM at Millville. https://doi.org/10.1594/PANGAEA.896836
- Bralower, TJ; Kump, LR; Self-Trail, J et al. (2018): Carbonate, abundance of pyrite and siderite and nannofossil Whole Shield Index during the PETM at South Dover Bridge. https://doi.org/10.1594/PANGAEA.896837
- Bralower, TJ; Kump, LR; Self-Trail, J et al. (2018): Abundance of pyrite and siderite and nannofossil Whole Shield Index during the PETM at Wilson Lake. https://doi.org/10.1594/PANGAEA.896838
- Bralower, TJ; Kump, LR; Self-Trail, J et al. (2018): Compilation of PETM carbonate and isotope data from PETM sections. https://doi.org/10.1594/PANGAEA.896840