New age constraints for the Salamanca Formation and lower Rio Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for Cretaceous-Paleogene extinction recovery and land mammal age correlations
2014; Geological Society of America; Volume: 126; Issue: 3-4 Linguagem: Inglês
10.1130/b30915.1
ISSN1943-2674
AutoresWilliam C. Clyde, Peter Wilf, Ari Iglesias, Rudy Slingerland, Timothy Barnum, Peter K. Bijl, Timothy J. Bralower, Henk Brinkhuis, Emily Elizabeth Comer, Brian T. Huber, Mauricio Ibáñez‐Mejia, Brian R. Jicha, J. Marcelo Krause, Jonathan D. Schueth, Brad S. Singer, M. Sol Raigemborn, Mark D. Schmitz, Appy Sluijs, María del Carmen Zamaloa,
Tópico(s)Pleistocene-Era Hominins and Archaeology
ResumoResearch Article| March 01, 2014 New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for Cretaceous-Paleogene extinction recovery and land mammal age correlations William C. Clyde; William C. Clyde † 1Department of Earth Sciences, University of New Hampshire, 56 College Road, Durham, New Hampshire 03824, USA †E-mail: will.clyde@unh.edu Search for other works by this author on: GSW Google Scholar Peter Wilf; Peter Wilf 2Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Search for other works by this author on: GSW Google Scholar Ari Iglesias; Ari Iglesias 3División Paleontología, Universidad Nacional del Comahue, Instituto de Investigaciones en Biodiversidad y Ambiente INIBIOMA-CONICET, San Carlos de Bariloche 8400, Río Negro, Argentina Search for other works by this author on: GSW Google Scholar Rudy L. Slingerland; Rudy L. Slingerland 2Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Search for other works by this author on: GSW Google Scholar Timothy Barnum; Timothy Barnum 1Department of Earth Sciences, University of New Hampshire, 56 College Road, Durham, New Hampshire 03824, USA Search for other works by this author on: GSW Google Scholar Peter K. Bijl; Peter K. Bijl 4Department of Earth Sciences, Faculty of Geosciences, Utrecht University Laboratory of Palaeobotany and Palynology, Budapestlaan 4, 3584 CD Utrecht, The Netherlands Search for other works by this author on: GSW Google Scholar Timothy J. Bralower; Timothy J. Bralower 2Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Search for other works by this author on: GSW Google Scholar Henk Brinkhuis; Henk Brinkhuis 4Department of Earth Sciences, Faculty of Geosciences, Utrecht University Laboratory of Palaeobotany and Palynology, Budapestlaan 4, 3584 CD Utrecht, The Netherlands Search for other works by this author on: GSW Google Scholar Emily E. Comer; Emily E. Comer 2Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Search for other works by this author on: GSW Google Scholar Brian T. Huber; Brian T. Huber 5Department of Paleobiology, MRC NHB-121, National Museum of Natural History, Smithsonian Institution, Washington, District of Columbia 20560, USA Search for other works by this author on: GSW Google Scholar Mauricio Ibañez-Mejia; Mauricio Ibañez-Mejia 6Department of Geosciences, University of Arizona, 1040 E. 4th Street, Tucson, Arizona 85721, USA Search for other works by this author on: GSW Google Scholar Brian R. Jicha; Brian R. Jicha 7Department of Geoscience, University of Wisconsin–Madison, 1215 W. Dayton Street, Madison, Wisconsin 53706, USA Search for other works by this author on: GSW Google Scholar J. Marcelo Krause; J. Marcelo Krause 8Museo Paleontológico Egidio Feruglio (CONICET-UNPSJB), Av. Fontana 140, 9100 Trelew, Argentina Search for other works by this author on: GSW Google Scholar Jonathan D. Schueth; Jonathan D. Schueth 2Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Search for other works by this author on: GSW Google Scholar Bradley S. Singer; Bradley S. Singer 7Department of Geoscience, University of Wisconsin–Madison, 1215 W. Dayton Street, Madison, Wisconsin 53706, USA Search for other works by this author on: GSW Google Scholar María Sol Raigemborn; María Sol Raigemborn 9Centro de Investigaciones Geológicas (CONICET-UNLP), Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, La Plata 1900, Argentina Search for other works by this author on: GSW Google Scholar Mark D. Schmitz; Mark D. Schmitz 10Department of Geosciences, Boise State University, 1910 University Drive, Boise, Idaho 83725, USA Search for other works by this author on: GSW Google Scholar Appy Sluijs; Appy Sluijs 4Department of Earth Sciences, Faculty of Geosciences, Utrecht University Laboratory of Palaeobotany and Palynology, Budapestlaan 4, 3584 CD Utrecht, The Netherlands Search for other works by this author on: GSW Google Scholar María del Carmen Zamaloa María del Carmen Zamaloa 11Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires, Capital Federal, Buenos Aires C1428EHA, Argentina Search for other works by this author on: GSW Google Scholar Author and Article Information William C. Clyde † 1Department of Earth Sciences, University of New Hampshire, 56 College Road, Durham, New Hampshire 03824, USA Peter Wilf 2Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Ari Iglesias 3División Paleontología, Universidad Nacional del Comahue, Instituto de Investigaciones en Biodiversidad y Ambiente INIBIOMA-CONICET, San Carlos de Bariloche 8400, Río Negro, Argentina Rudy L. Slingerland 2Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Timothy Barnum 1Department of Earth Sciences, University of New Hampshire, 56 College Road, Durham, New Hampshire 03824, USA Peter K. Bijl 4Department of Earth Sciences, Faculty of Geosciences, Utrecht University Laboratory of Palaeobotany and Palynology, Budapestlaan 4, 3584 CD Utrecht, The Netherlands Timothy J. Bralower 2Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Henk Brinkhuis 4Department of Earth Sciences, Faculty of Geosciences, Utrecht University Laboratory of Palaeobotany and Palynology, Budapestlaan 4, 3584 CD Utrecht, The Netherlands Emily E. Comer 2Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Brian T. Huber 5Department of Paleobiology, MRC NHB-121, National Museum of Natural History, Smithsonian Institution, Washington, District of Columbia 20560, USA Mauricio Ibañez-Mejia 6Department of Geosciences, University of Arizona, 1040 E. 4th Street, Tucson, Arizona 85721, USA Brian R. Jicha 7Department of Geoscience, University of Wisconsin–Madison, 1215 W. Dayton Street, Madison, Wisconsin 53706, USA J. Marcelo Krause 8Museo Paleontológico Egidio Feruglio (CONICET-UNPSJB), Av. Fontana 140, 9100 Trelew, Argentina Jonathan D. Schueth 2Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, USA Bradley S. Singer 7Department of Geoscience, University of Wisconsin–Madison, 1215 W. Dayton Street, Madison, Wisconsin 53706, USA María Sol Raigemborn 9Centro de Investigaciones Geológicas (CONICET-UNLP), Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata, La Plata 1900, Argentina Mark D. Schmitz 10Department of Geosciences, Boise State University, 1910 University Drive, Boise, Idaho 83725, USA Appy Sluijs 4Department of Earth Sciences, Faculty of Geosciences, Utrecht University Laboratory of Palaeobotany and Palynology, Budapestlaan 4, 3584 CD Utrecht, The Netherlands María del Carmen Zamaloa 11Departamento de Ecología, Genética y Evolución, Universidad de Buenos Aires, Capital Federal, Buenos Aires C1428EHA, Argentina †E-mail: will.clyde@unh.edu Publisher: Geological Society of America Received: 25 Apr 2013 Revision Received: 03 Sep 2013 Accepted: 20 Nov 2013 First Online: 08 Mar 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 © 2014 Geological Society of America GSA Bulletin (2014) 126 (3-4): 289–306. https://doi.org/10.1130/B30915.1 Article history Received: 25 Apr 2013 Revision Received: 03 Sep 2013 Accepted: 20 Nov 2013 First Online: 08 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation William C. Clyde, Peter Wilf, Ari Iglesias, Rudy L. Slingerland, Timothy Barnum, Peter K. Bijl, Timothy J. Bralower, Henk Brinkhuis, Emily E. Comer, Brian T. Huber, Mauricio Ibañez-Mejia, Brian R. Jicha, J. Marcelo Krause, Jonathan D. Schueth, Bradley S. Singer, María Sol Raigemborn, Mark D. Schmitz, Appy Sluijs, María del Carmen Zamaloa; New age constraints for the Salamanca Formation and lower Río Chico Group in the western San Jorge Basin, Patagonia, Argentina: Implications for Cretaceous-Paleogene extinction recovery and land mammal age correlations. GSA Bulletin 2014;; 126 (3-4): 289–306. doi: https://doi.org/10.1130/B30915.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract The Salamanca Formation of the San Jorge Basin (Patagonia, Argentina) preserves critical records of Southern Hemisphere Paleocene biotas, but its age remains poorly resolved, with estimates ranging from Late Cretaceous to middle Paleocene. We report a multi-disciplinary geochronologic study of the Salamanca Formation and overlying Río Chico Group in the western part of the basin. New constraints include (1) an 40Ar/39Ar age determination of 67.31 ± 0.55 Ma from a basalt flow underlying the Salamanca Formation, (2) micropaleontological results indicating an early Danian age for the base of the Salamanca Formation, (3) laser ablation HR-MC-ICP-MS (high resolution-multi collector-inductively coupled plasma-mass spectrometry) U-Pb ages and a high-resolution TIMS (thermal ionization mass spectrometry) age of 61.984 ± 0.041(0.074)[0.100] Ma for zircons from volcanic ash beds in the Peñas Coloradas Formation (Río Chico Group), and (4) paleomagnetic results indicating that the Salamanca Formation in this area is entirely of normal polarity, with reversals occurring in the Río Chico Group. Placing these new age constraints in the context of a sequence stratigraphic model for the basin, we correlate the Salamanca Formation in the study area to Chrons C29n and C28n, with the Banco Negro Inferior (BNI), a mature widespread fossiliferous paleosol unit at the top of the Salamanca Formation, corresponding to the top of Chron C28n. The diverse paleobotanical assemblages from this area are here assigned to C28n (64.67–63.49 Ma), ∼2–3 million years older than previously thought, adding to growing evidence for rapid Southern Hemisphere floral recovery after the Cretaceous-Paleogene extinction. Important Peligran and "Carodnia" zone vertebrate fossil assemblages from coastal BNI and Peñas Coloradas exposures are likely older than previously thought and correlate to the early Torrejonian and early Tiffanian North American Land Mammal Ages, respectively. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
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