Astronomical duration of polarity Chron C31r (Lower Maastrichtian): cyclostratigraphy of ODP Site 762 (Indian Ocean) and the Contessa Highway section (Gubbio, Italy)
| Autor: | Nicolas Thibault, Bruno Galbrun, Silvia Gardin, Rodolfo Coccioni, Emilia Huret, Dorothée Husson |
|---|---|
| Přispěvatelé: | Institut des Sciences de la Terre de Paris (iSTeP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Department of Geosciences and Natural Resource Management [Copenhagen] (IGN), Faculty of Science [Copenhagen], University of Copenhagen = Københavns Universitet (KU)-University of Copenhagen = Københavns Universitet (KU), Centre de recherche sur la Paléobiodiversité et les Paléoenvironnements (CR2P), Muséum national d'Histoire naturelle (MNHN)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), University of Copenhagen = Københavns Universitet (UCPH)-University of Copenhagen = Københavns Universitet (UCPH), Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Université Pierre et Marie Curie - Paris 6 (UPMC) |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
010506 paleontology
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences Geology Cyclostratigraphy 010502 geochemistry & geophysics 01 natural sciences Paleontology Indian ocean Duration (music) Section (archaeology) Polarity chron [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology Seismology ComputingMilieux_MISCELLANEOUS 0105 earth and related environmental sciences |
| Zdroj: | Geological Magazine Geological Magazine, Cambridge University Press (CUP), 2012, 149 (2), pp.345-351. ⟨10.1017/S0016756811000999⟩ Geological Magazine, 2012, 149 (2), pp.345-351. ⟨10.1017/S0016756811000999⟩ Geological Magazine, Cambridge University Press (CUP), 2012, 149, pp.345-351 |
| ISSN: | 0016-7568 1469-5081 |
| DOI: | 10.1017/S0016756811000999⟩ |
| Popis: | The duration of polarity Chron C31r is estimated with a cyclostratigraphic approach. Two sites are investigated: ODP Site 762 (Indian Ocean) and the Contessa Highway section (Gubbio, Italy). Cyclostratigraphic analysis is performed on greyscale variations (Site 762) and magnetic susceptibility variations (Contessa section). Both sites reveal an astronomical control of the sedimentation, highlighted by the identification of all the orbital periodicities. Cyclostratigraphic signals are tuned on 405 ka eccentricity cycles extracted from the La04 astronomical solution. In both sites, cycle counting gives an estimate of the duration of polarity Chron C31r of about 2.09 ± 0.03 Ma. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|