GSSP for Priabonian Stage
Definition:
The base of the Priabonian Stage of the Eocene Series is located at the
base of the Tiziano Bed, a prominent crystal tuff layer at 63.57 m level
in the Alano di Piave section, NE Italy.
Location:
The Alano di Piave section (Veneto Prealps, Belluno province, N. Italy)crops out
for ~ 500 meters along the banks of the Calcino Creek, between the small villages
of Colmirano and Campo, ~ 1 km NE of the Alano di Piave village at a Latitude of
45°54’51.10"N and a longitude of 11°55’4.87"E.
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Sedimentology:
The Alano section consists mainly of hemipelagic marls intercalated with
thin sandy-silty layers. Some of the sandy-silty layers are up to 6 cm
thick and six of those are named crystal tuff layers. The Tiziano
crystal tuff layer is designated as the GSSP level for the Priabonian.
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Primary Markers:
Tiziano crystal tuff layer at 63.57m level in the Alano section.
Secondary Markers:
Markers across the Bartonian-Priabonian Boundary:
| Markers |
level |
| Top of calcareous nannofossil Chiasmotithus
grandis |
66.47m |
| Tiziano Bed (GSSP) |
63.57m |
| Base of subchron C17n.2n |
62.96m |
| Top of foraminifer Morozovelloides |
57.52m |
| Top of large acarininid foraminifera |
57.32m |
| Base of subchron C17n.3n |
52.62m |
Correlation Events:
Foraminifer LAD of Morozovelloides, Calcareous nannofossil acme
of
Cribrocentrum erbae
References:
Agnini, C., Backman, J., Boscolo Galazzo, F., Condon, D.J., Fornaciari, E.,
Galeotti, S., et al., 2021, Proposal for the Global Boundary Stratotype Section
and Point (GSSP) for the Priabonian Stage (Eocene) at the Alano Section (Italy).
Episodes 44/2: 151-173.
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