Astronomical duration of polarity Chron C31r (lower Maastrichtian): cyclostratigraphy of the ODP Hole 762C (Indian Ocean) and the Contessa section (Italy)

Dorothee Husson; Bruno Galbrun; Nicolas Rudolph Thibault; Silvia Gardin; Emilia Huret; Rodolfo Coccioni

doi:10.1017/s0016756811000999

Astronomical duration of polarity Chron C31r (lower Maastrichtian): cyclostratigraphy of the ODP Hole 762C (Indian Ocean) and the Contessa section (Italy)

Dorothee Husson, Bruno Galbrun, Nicolas Rudolph Thibault, Silvia Gardin, Emilia Huret, Rodolfo Coccioni

Geology

10 Citations (Scopus)

Abstract

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.

Original language	English
Journal	Geological Magazine
Volume	149
Issue number	2
Pages (from-to)	345-351
Number of pages	7
ISSN	0016-7568
DOIs	https://doi.org/10.1017/s0016756811000999
Publication status	Published - Mar 2012

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10.1017/s0016756811000999

Astronomical duration of polarity Chron C31r (Lower Maastrichtian): cyclostratigraphy of ODP Site 762 (Indian Ocean) and the Contessa Highway section (Gubbio, Italy)Final published version, 910 KB

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Astronomical duration of polarity Chron C31r (lower Maastrichtian) : cyclostratigraphy of the ODP Hole 762C (Indian Ocean) and the Contessa section (Italy). / Husson, Dorothee; Galbrun, Bruno; Thibault, Nicolas Rudolph et al.

In: Geological Magazine, Vol. 149, No. 2, 03.2012, p. 345-351.

Research output: Contribution to journal › Journal article › Research › peer-review

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