Articles | Volume 19, issue 9
https://doi.org/10.5194/cp-19-1743-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/cp-19-1743-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
05 Sep 2023
Research article |
| 05 Sep 2023
| 05 Sep 2023
Carbon isotope chemostratigraphy, geochemistry, and biostratigraphy of the Paleocene–Eocene Thermal Maximum, deepwater Wilcox Group, Gulf of Mexico (USA)
Department of Geosciences, University of Arkansas, Fayetteville, AR
72701, USA
Eugene Szymanski
Department of Geosciences, University of Arkansas, Fayetteville, AR
72701, USA
Utah Geological Survey, 1594 W. North Temple, Suite 3110, Salt Lake
City, UT 84116, USA
Rebecca A. Hackworth
Chevron Technology Center, 1500 Louisiana St., Houston, TX 77002, USA
Alicia C. M. Kahn
Chevron Technology Center, 1500 Louisiana St., Houston, TX 77002, USA
Lawrence A. Febo
Chevron Technology Center, 1500 Louisiana St., Houston, TX 77002, USA
Jordan Oefinger
Department of Geosciences, University of Arkansas, Fayetteville, AR
72701, USA
Gunnar M. Gregory
Department of Geosciences, University of Arkansas, Fayetteville, AR
72701, USA
Related authors
Glenn R. Sharman and Matthew A. Malkowski
Geochronology, 6, 37–51, https://doi.org/10.5194/gchron-6-37-2024, https://doi.org/10.5194/gchron-6-37-2024, 2024
Short summary
Short summary
The mineral zircon is widely used to determine the age of rocks based on the radioactive decay of U to Pb, but the measured U–Pb date can be too young if the zircon loses Pb. We present a method for estimating the distribution of apparent Pb loss by mathematical convolution. Applying this approach to 10 samples illustrates contrasting patterns of apparent Pb loss. This study highlights the importance of quantifying Pb loss to better understand its potential effects on zircon U–Pb dates.
Glenn R. Sharman and Matthew A. Malkowski
Geochronology, 6, 37–51, https://doi.org/10.5194/gchron-6-37-2024, https://doi.org/10.5194/gchron-6-37-2024, 2024
Short summary
Short summary
The mineral zircon is widely used to determine the age of rocks based on the radioactive decay of U to Pb, but the measured U–Pb date can be too young if the zircon loses Pb. We present a method for estimating the distribution of apparent Pb loss by mathematical convolution. Applying this approach to 10 samples illustrates contrasting patterns of apparent Pb loss. This study highlights the importance of quantifying Pb loss to better understand its potential effects on zircon U–Pb dates.
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Short summary
This study examines deepwater deposits within the Gulf of Mexico (USA) that record an episode of pronounced global warming that occurred ∼56 million years ago. We show that the supply of sand and silt into the basin shut off after a delay of about 30 000 years, followed by an influx of clay derived from deep erosion of central North America. Our results are consistent with other studies that indicate rapid sea-level rise, ocean acidification, and decreased oxygen during this warming event
This study examines deepwater deposits within the Gulf of Mexico (USA) that record an episode of...
