Astronomical duration of polarity Chron C31r (lower Maastrichtian); cyclostratigraphy of ODP Site 762 (Indian Ocean) and the Contessa highway section (Gubbio, Italy)

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doi: 10.1017/S0016756811000999
Author(s): Husson, Dorothee; Galbrun, Bruno; Thibault, Nicolas; Gardin, Silvia; Huret, Emilia; Coccioni, Rodolfo
Author Affiliation(s): Primary:
Université Pierre et Marie Curie, Paris, France
University of Copenhagen, Denmark
Universita d'Urbino, Italy
Volume Title: Geological Magazine
Source: Geological Magazine, 149(2), p.345-351. Publisher: Cambridge University Press, London, United Kingdom. ISSN: 0016-7568 CODEN: GEMGA4
Note: In English. 56 refs.; illus.
Summary: 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.
Year of Publication: 2012
Research Program: ODP Ocean Drilling Program
Key Words: 03 Geochronology; 12 Stratigraphy, Historical Geology and Paleoecology; Algae; Assemblages; Chronostratigraphy; Contessa Italy; Cretaceous; Cyclostratigraphy; Eccentricity; Europe; Exmouth Plateau; Geochronology; Gubbio Italy; Indian Ocean; Italy; Leg 122; Lower Maestrichtian; Maestrichtian; Magnetic properties; Magnetic susceptibility; Mesozoic; Microfossils; Nannofossils; ODP Site 762; Ocean Drilling Program; Paleogeography; Paleomagnetism; Perugia Italy; Plantae; Relative age; Senonian; Southern Europe; Umbria Italy; Upper Cretaceous
Coordinates: S195315 S195314 E1121515 E1121514
N422000 N434000 E0131500 E0115000
Record ID: 2012030421
Copyright Information: GeoRef, Copyright 2017 American Geosciences Institute. Abstract, Copyright, Cambridge University Press, Reference includes data from GeoScienceWorld, Alexandria, VA, United States