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Title: Integrated stratigraphy of the Oligocene pelagic sequence in the Umbria-Marche basin (northeastern Apennines, Italy): A potential Global Stratotype Section and Point (GSSP) for the Rupelian/Chattian boundary
Authors: Coccioni, R ×
Marsili, A
Montanari, A
Bellanca, A
Neri, R
Bice, DM
Brinkhuis, H
Church, N
Macalady, A
McDaniel, A
Deino, A
Lirer, F
Sprovieri, M
Maiorano, P
Monechi, S
Nini, C
Nocchi, M
Pross, J
Rochette, P
Sagnotti, L
Tateo, F
Touchard, Y
Van Simaeys, Stefaan
Williams, GL #
Issue Date: Mar-2008
Series Title: Geological Society of America bulletin vol:120 issue:3/4 pages:487-511
Abstract: The Oligocene represents an important time period from a wide range of perspectives and includes signifi cant climatic and eustatic variations. The pelagic succession of the Umbria-Marche Apennines (central Italy) includes a complete and continuous sequence of marly limestones and marls, with volcaniclastic layers that enable us to
construct an integrated stratigraphic framework for this time period. We present here a synthesis of detailed biostratigraphic, magnetostratigraphic, and emostratigraphic studies, along with geochronologic results from several biotite-rich volcaniclastic layers,
which provide the means for an accurate and precise radiometric calibration of the Oligocene time scale. From this study, the interpolated ages for the Rupelian/Chattian
stage boundary, located in the upper half of Chron 10n at meter level 188 in the Monte Cagnero section, and corresponding to the O4/O5 planktonic foraminiferal zonal
boundary, are 28.36 Ma (paleomagnetic interpolation), 28.27 ± 0.1 Ma (direct radioisotopic dating), and 27.99 Ma (astrochronological interpolation). These ages appear
to be slightly younger than those reported in recent chronostratigraphic time scale compilations. The Monte Cagnero section is a potential candidate for defi ning the Chattian Global Stratotype Section and Point
(GSSP) and some reliable criteria are here proposed for marking the Rupelian/Chattian boundary according to International Union of Geological Sciences (IUGS) recommendations.
ISSN: 0016-7606
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Department of Earth and Environmental Sciences
Division of Geology
× corresponding author
# (joint) last author

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