The Global Boundary Stratotype Section and Point (GSSP) for the base of the Cenomanian Stage, Mont Risou, Hautes-Alpes, France
WJ Kennedy, A.S. Gale, Jackie A. Lees, M. Caron
Abstract
WJ Kennedy, A.S. Gale, Jackie A. Lees, M. Caron
Abstract
Following the unanimous recommendation of the International Commission on Stratigraphy, the Global boundary Stratotype Section and Point (GSSP) for the base of the Cenomanian Stage is defined at a level 36 metres below the top of the Marnes Bleues Formation, a level that corresponds to the the first appearance of the planktonic for aminiferan Rotalipora globotruncanoides Sigal, 1948, on the south side of Mont Risou, east of Rosans, Haute-Alpes, France, where it can be placed in the context of a series of secondary market levels based on nannofossils, planktonic foraminifera, ammonites, and an ornate delta(13)C curve.
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Following the unanimous recommendation of the International Commission on Stratigraphy, the Global boundary Stratotype Section and Point (GSSP) for the base of the Cenomanian Stage is defined at a level 36 metres below the top of the Marnes Bleues Formation, a level that corresponds to the the first appearance of the planktonic for aminiferan Rotalipora globotruncanoides Sigal, 1948, on the south side of Mont Risou, east of Rosans, Haute-Alpes, France, where it can be placed in the context of a series of secondary market levels based on nannofossils, planktonic foraminifera, ammonites, and an ornate delta(13)C curve.
Key concepts: Global Boundary Stratotype Section and Point, Stratotype, Cenomanian, Geology, Paleontology, Foraminifera, Stage (stratigraphy), Context (archaeology)