ABSTRACT: The Oligo-Miocene Transition (OMT) is one of the most important climatic transitions of the last 30 million years. This short period of climate warming coincides with a few biotic turnovers, which are well known in deeper marine settings where stratigraphic successions yield a detailed record; in shallowmarine environments they have been proved difficult to recognize as the occurrence and absence of certain taxa due to ecological preferences hamper the study. This study focuses on the Case CnÃ© section in the late Oligocene of the Tertiary Piedmont Basin (TPB) as it represents a gradual transgressive event, which shows the drowning of a locally developed reef complex and development of a deeper marine sedimentary setting influenced by gravity flow mechanics. Larger foraminifera biostratigraphy was used to date the section to the late Oligocene (SBZ23); preliminary strontium isotope data confirms this result. Using sedimentological, semi-quantitative microfacies and geochemical analysis the sedimentary history of the section was reconstructed and divided into four major phases: the drowning of the reef complex, a short prograding phase of the fluvial system, the onset of gravity flow mechanics and a final transgressive phase with an initial turbiditic influence which continues regionally into the Miocene.

Antonino Briguglio

Simone Crobu

Eleni Lutaj

Michele Piazza

Stratigraphy

该杂志的使命是发表使用现代地层学工具（生物地层学、化学地层学、磁地层学、旋回地层学、序列地层学、气候地层学、岩石地层学、GSSP 等）的同行评议论文，以探索地球历史上的广泛思想。

The journal "Stratigraphy" is dedicated to publishing peer-reviewed papers that utilize modern stratigraphic tools, such as biostratigraphy, chemostratigraphy, magnetostratigraphy, cyclostratigraphy, sequence stratigraphy, climate stratigraphy, lithostratigraphy, and GSSP, to explore a wide range of ideas in Earth history.

《Stratigraphy》杂志致力于发表使用现代地层学工具（如生物地层学、化学地层学、磁地层学、旋回地层学、序列地层学、气候地层学、岩石地层学、GSSP等）进行的同行评审论文，旨在探索地球历史中的广泛主题。

Category	Quartile
地球科学	3
地球科学, 地质学	2
地球科学, 古生物学	3

Integrated stratigraphy from a transgressive upper Oligocene section in NW Italy

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