High-precision U-Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiosperm diversification in Patagonia
The Baqueró Group is one of the most relevant units regarding the study of the early diversification of angiosperms in South America. Whereas the age of the upper part of the Group, namely the Punta del Barco Formation, has been recently dated at 114.67±0.18Ma, the rest of the unit still lacks preci...
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2013
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| LEADER | 16603caa a22013937a 4500 | ||
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| 003 | AR-BaUEN | ||
| 005 | 20230518205555.0 | ||
| 008 | 190411s2013 xx ||||fo|||| 00| 0 eng|d | ||
| 024 | 7 | |2 scopus |a 2-s2.0-84884947413 | |
| 040 | |a Scopus |b spa |c AR-BaUEN |d AR-BaUEN | ||
| 100 | 1 | |a Perez Loinaze, V.S. | |
| 245 | 1 | 0 | |a High-precision U-Pb zircon age from the Anfiteatro de Ticó Formation: Implications for the timing of the early angiosperm diversification in Patagonia |
| 260 | |c 2013 | ||
| 270 | 1 | 0 | |m Vera, E.I.; Museo Argentino de Ciencias Naturales B. Rivadavia, Av. Ángel Gallardo 470, C1405DJR Buenos Aires, Argentina; email: evera@macn.gov.ar |
| 506 | |2 openaire |e Política editorial | ||
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| 504 | |a Vera, E.I., (2010) Estudios anatómicos en paleofloras del Aptiano de Antártida y Patagonia, y su comparación, , Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ph.D. Thesis | ||
| 504 | |a Vera, E.I., Cesari, S.N., Fossil woods (Coniferales) from the Baqueró group(Aptian), Santa Cruz Province, Argentina (2012) An. Acad. Bras. Cienc., 84, pp. 617-626 | ||
| 520 | 3 | |a The Baqueró Group is one of the most relevant units regarding the study of the early diversification of angiosperms in South America. Whereas the age of the upper part of the Group, namely the Punta del Barco Formation, has been recently dated at 114.67±0.18Ma, the rest of the unit still lacks precise dating. In this contribution a CA-TIMS U-Pb zircon age of 118.23±0.09Ma for a tuff interlayered with fossiliferous rocks of the Anfiteatro de Ticó Formation (lower part of the Baqueró Group) is reported. This age constrains the duration of deposition of the Baqueró Group to approximately 4Ma and provides new evidence for the age interpretation of the previously described angiosperm flora and associated pollen assemblages from this unit, until now interpreted as early Aptian or possibly Barremian in age. The Aptian age of the Baqueró Group allows a better comparison between the paleofloras from this southernmost region. © 2013 Elsevier Ltd. |l eng | |
| 536 | |a Detalles de la financiación: Agencia Nacional de Promoción Científica y Tecnológica, PICT 2602 | ||
| 536 | |a Detalles de la financiación: Consejo Nacional de Investigaciones Científicas y Técnicas, PIP 0512 | ||
| 536 | |a Detalles de la financiación: We wish to thank Dr. S. Archangelsky, for several stimulating talks on the geology of the region. Thanks are extended to reviewers Drs. A. Folguera and M. Naipauer for their comments, which improved the final version of the manuscript. This work was supported by the ANPCyT (PICT 2602) and CONICET (PIP 0512). Appendix A | ||
| 593 | |a Museo Argentino de Ciencias Naturales B. Rivadavia, Av. Ángel Gallardo 470, C1405DJR Buenos Aires, Argentina | ||
| 593 | |a Departamento de Ciencias Geológicas, Universidad de Buenos Aires, Pabellón 2, Ciudad Universitaria, 1428 Buenos Aires, Argentina | ||
| 593 | |a Instituto de Investigaciones en Biodiversidad y Medioambiente, CONICET-UNCo, Quintral 1250, R8400FRF S.C. de Bariloche, Argentina | ||
| 593 | |a Comisión Nacional de Energía Atómica, Regional Patagonia, 26 de Noviembre s/n, 9100 Trelew, Chubut, Argentina | ||
| 593 | |a CONICET, Argentina | ||
| 593 | |a University of British Columbia, Department of Earth, Ocean and Atmospheric Sciences, Pacific Centre for Isotopic and Geochemical Research, 6339 Stores Road, Vancouver, BC V6T 1Z4, Canada | ||
| 690 | 1 | 0 | |a ANGIOSPERMS |
| 690 | 1 | 0 | |a APTIAN |
| 690 | 1 | 0 | |a BAQUERO GROUP |
| 690 | 1 | 0 | |a CRETACEOUS |
| 690 | 1 | 0 | |a GEOCHRONOLOGY |
| 690 | 1 | 0 | |a PALEOBOTANY |
| 690 | 1 | 0 | |a PALYNOLOGY |
| 690 | 1 | 0 | |a PATAGONIA |
| 690 | 1 | 0 | |a AGE DETERMINATION |
| 690 | 1 | 0 | |a ANGIOSPERM |
| 690 | 1 | 0 | |a APTIAN |
| 690 | 1 | 0 | |a FOSSIL ASSEMBLAGE |
| 690 | 1 | 0 | |a GEOCHRONOLOGY |
| 690 | 1 | 0 | |a LITHOSTRATIGRAPHY |
| 690 | 1 | 0 | |a PALEOBOTANY |
| 690 | 1 | 0 | |a PALYNOLOGY |
| 690 | 1 | 0 | |a URANIUM-LEAD DATING |
| 690 | 1 | 0 | |a ZIRCON |
| 690 | 1 | 0 | |a PATAGONIA |
| 690 | 1 | 0 | |a MAGNOLIOPHYTA |
| 650 | 1 | 7 | |2 spines |a PRECISION |
| 700 | 1 | |a Vera, E.I. | |
| 700 | 1 | |a Passalia, M.G. | |
| 700 | 1 | |a Llorens, M. | |
| 700 | 1 | |a Friedman, R. | |
| 700 | 1 | |a Limarino, C.O. | |
| 700 | 1 | |a Césari, S.N. | |
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