Bighorn Basin Coring Project (BBCP): a continental perspective on early Paleogene hyperthermals
During the summer of 2011, the Bighorn Basin Coring Project (BBCP) recovered over 900 m of overlapping core from 3 different sites in late Paleocene to early Eocene fluvial deposits of northwestern Wyoming. BBCP cores are being used to develop high-resolution proxy records of the Paleocene–Eocene Th...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2013-11-01
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| Series: | Scientific Drilling |
| Online Access: | http://www.sci-dril.net/16/21/2013/sd-16-21-2013.pdf |
| _version_ | 1818665762938683392 |
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| author | W. C. Clyde P. D. Gingerich S. L. Wing U. Röhl T. Westerhold G. Bowen K. Johnson A. A. Baczynski A. Diefendorf F. McInerney D. Schnurrenberger A. Noren K. Brady the BBCP Science Team |
| author_facet | W. C. Clyde P. D. Gingerich S. L. Wing U. Röhl T. Westerhold G. Bowen K. Johnson A. A. Baczynski A. Diefendorf F. McInerney D. Schnurrenberger A. Noren K. Brady the BBCP Science Team |
| author_sort | W. C. Clyde |
| collection | DOAJ |
| description | During the summer of 2011, the Bighorn Basin Coring Project (BBCP) recovered
over 900 m of overlapping core from 3 different sites in late Paleocene
to early Eocene fluvial deposits of northwestern Wyoming. BBCP cores are
being used to develop high-resolution proxy records of the Paleocene–Eocene
Thermal Maximum (PETM) and Eocene Thermal Maximum 2 (ETM2) hyperthermal
events. These events are short-term, large magnitude global warming events
associated with extreme perturbations to the earth's carbon cycle. Although
the PETM and ETM2 occurred ~55–52 million years ago, they are
analogous in many ways to modern anthropogenic changes to the carbon cycle.
By applying various sedimentological, geochemical, and palynological methods
to the cores, we hope to better understand what caused these events, study
the biogeochemical and ecological feedbacks that operated during them, and
reveal precisely how they impacted continental environments.
<br><br>
Core recovery was >98% in all holes and most drilling was
carried out without fluid additives, showing that continuous coring of
continental smectitic deposits like these can be achieved with minimal risk
of contamination to molecular biomarkers. Cores were processed in the Bremen
Core Repository where the science team convened for 17 days to carry out
data collection and sampling protocols similar to IODP projects. Initial
results show that the weathered horizon extends to as much as
~30 m below the surface and variations in magnetic
susceptibility within the cores record an interplay between grain size and
pedogenesis. Previous investigations of outcrops near the BBCP drill sites
allow detailed evaluation of the effects of weathering on common proxy
methods. Studies of lithofacies, organic geochemistry, stable isotope
geochemistry, calibrated XRF core scanning, paleomagnetics, and palynology
are underway and will represent the highest resolution and most integrated
proxy records of the PETM from a continental setting yet known. An extensive
outreach program is in place to capitalize on the educational value
associated with the Bighorn Basin's unusually complete record of Phanerozoic
earth history. |
| first_indexed | 2024-12-17T05:53:48Z |
| format | Article |
| id | doaj.art-d1223af10d114d198b83f3898e6fc6f2 |
| institution | Directory Open Access Journal |
| issn | 1816-8957 1816-3459 |
| language | English |
| last_indexed | 2024-12-17T05:53:48Z |
| publishDate | 2013-11-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Scientific Drilling |
| spelling | doaj.art-d1223af10d114d198b83f3898e6fc6f22022-12-21T22:01:05ZengCopernicus PublicationsScientific Drilling1816-89571816-34592013-11-0116213110.5194/sd-16-21-2013Bighorn Basin Coring Project (BBCP): a continental perspective on early Paleogene hyperthermalsW. C. Clyde0P. D. Gingerich1S. L. Wing2U. Röhl3T. Westerhold4G. Bowen5K. Johnson6A. A. Baczynski7A. Diefendorf8F. McInerney9D. Schnurrenberger10A. Noren11K. Brady12the BBCP Science TeamDepartment of Earth Sciences, University of New Hampshire, 56 College Rd., Durham, NH 03824, USADepartment of Earth and Environmental Sciences and Museum of Paleontology, University of Michigan, Ann Arbor, MI 48109, USADepartment of Paleobiology, Smithsonian Museum of Natural History, 10th Street and Constitution Avenue, NW, Washington, DC 20560, USAMARUM – Center for Marine Environmental Sciences, University of Bremen, Leobener Strasse, 28359 Bremen, GermanyMARUM – Center for Marine Environmental Sciences, University of Bremen, Leobener Strasse, 28359 Bremen, GermanyDepartment of Geology & Geophysics, University of Utah, Salt Lake City, UT 84112, USASmithsonian Museum of Natural History, 10th Street and Constitution Avenue, NW, Washington, DC 20560, USADepartment of Earth and Planetary Sciences, Northwestern University, Evanston, IL 60208, USADepartment of Geology, University of Cincinnati, Cincinnati, OH 45221, USASchool of Earth & Environmental Sciences, University of Adelaide 5005, AustraliaDepartment of Earth Sciences, University of New Hampshire, 56 College Rd., Durham, NH 03824, USALacCore, University of Minnesota, Minneapolis, MN 55455, USALacCore, University of Minnesota, Minneapolis, MN 55455, USADuring the summer of 2011, the Bighorn Basin Coring Project (BBCP) recovered over 900 m of overlapping core from 3 different sites in late Paleocene to early Eocene fluvial deposits of northwestern Wyoming. BBCP cores are being used to develop high-resolution proxy records of the Paleocene–Eocene Thermal Maximum (PETM) and Eocene Thermal Maximum 2 (ETM2) hyperthermal events. These events are short-term, large magnitude global warming events associated with extreme perturbations to the earth's carbon cycle. Although the PETM and ETM2 occurred ~55–52 million years ago, they are analogous in many ways to modern anthropogenic changes to the carbon cycle. By applying various sedimentological, geochemical, and palynological methods to the cores, we hope to better understand what caused these events, study the biogeochemical and ecological feedbacks that operated during them, and reveal precisely how they impacted continental environments. <br><br> Core recovery was >98% in all holes and most drilling was carried out without fluid additives, showing that continuous coring of continental smectitic deposits like these can be achieved with minimal risk of contamination to molecular biomarkers. Cores were processed in the Bremen Core Repository where the science team convened for 17 days to carry out data collection and sampling protocols similar to IODP projects. Initial results show that the weathered horizon extends to as much as ~30 m below the surface and variations in magnetic susceptibility within the cores record an interplay between grain size and pedogenesis. Previous investigations of outcrops near the BBCP drill sites allow detailed evaluation of the effects of weathering on common proxy methods. Studies of lithofacies, organic geochemistry, stable isotope geochemistry, calibrated XRF core scanning, paleomagnetics, and palynology are underway and will represent the highest resolution and most integrated proxy records of the PETM from a continental setting yet known. An extensive outreach program is in place to capitalize on the educational value associated with the Bighorn Basin's unusually complete record of Phanerozoic earth history.http://www.sci-dril.net/16/21/2013/sd-16-21-2013.pdf |
| spellingShingle | W. C. Clyde P. D. Gingerich S. L. Wing U. Röhl T. Westerhold G. Bowen K. Johnson A. A. Baczynski A. Diefendorf F. McInerney D. Schnurrenberger A. Noren K. Brady the BBCP Science Team Bighorn Basin Coring Project (BBCP): a continental perspective on early Paleogene hyperthermals Scientific Drilling |
| title | Bighorn Basin Coring Project (BBCP): a continental perspective on early Paleogene hyperthermals |
| title_full | Bighorn Basin Coring Project (BBCP): a continental perspective on early Paleogene hyperthermals |
| title_fullStr | Bighorn Basin Coring Project (BBCP): a continental perspective on early Paleogene hyperthermals |
| title_full_unstemmed | Bighorn Basin Coring Project (BBCP): a continental perspective on early Paleogene hyperthermals |
| title_short | Bighorn Basin Coring Project (BBCP): a continental perspective on early Paleogene hyperthermals |
| title_sort | bighorn basin coring project bbcp a continental perspective on early paleogene hyperthermals |
| url | http://www.sci-dril.net/16/21/2013/sd-16-21-2013.pdf |
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