The Global Boundary Stratotype Section and Point (GSSP) for the base of the Hauterivian Stage (Lower Cretaceous), La Charce, southeast France

Abstract

Following votes by the Hauterivian Working Group, the Cretaceous Subcommission and the International Commission on Stratigraphy, in December 2019 the Executive Committee of the International Union of Geological Sciences unanimously approved the proposal that the Global Stratotype Section and Point (GSSP) for the base of the Hauterivian Stage of the Lower Cretaceous be placed at the base of bed n o 189 of the La Charce section, Drôme, southeast France (Vocontian Basin). This level is marked by the first appearance of the ammonite genus Acanthodiscus, which defines the base of the Acanthodiscus radiatus ammonite Zone. Complementary data include 13 ammonite and nannofossil events, and magnetostratigraphic and carbon isotope events.

Kilometre-scale coral carpets on mixed carbonate-siliciclastic platforms; a sedimentological study from the Lower Cretaceous of northwestern Africa

“…In the Mediterranean Tethys, this genus is restricted to the lowermost part of the Hauterivian, e.g. the Acanthodiscus radiatus Zone (Mutterlose et al, 2020). It should also be noted that occurrence of Acanthodiscus in the overlying Crioceratites loryi auct.…”

Early Crioceratites (heteromorphic ammonites) from the lower Hauterivian of south-eastern France: systematics, intraspecific variation and biostratigraphic implications

“…From a structural point of view, this section belongs to the southern subalpine chains of the Arc de Castellane, which are the outermost units of the Alpine Arc. The La Charce (LCH -Hauterivian GSSP; Reboulet et al, 1992;Reboulet, 1996;Reboulet and Atrops, 1999;Mutterlose et al, 2020) and Pommerol sections (POM -Drôme department; Reboulet, 2015;Aguirre-Urreta et al, 2019) are located in the western part of the Vocontian Basin (the Vocontian through in the sense of Ferry, 2017), in the pelagic domain (Fig. 1).…”

“…All the sections studied in the Alpes de Haute-Provence and Var departments belong to the protected perimeter of the 'Réserve naturelle nationale géologique de Haute-Provence' (RNNGHP), managed by the Departmental Council of the Alpes de Haute-Provence on behalf of the French State. The section LCH is the GSSP of the Hauterivian stage; this site is protected as an 'Espace naturel sensible' (Mutterlose et al, 2020).…”

First record of late Valanginian ammonites from the Mecsek Mountains (Hungary), and their importance for regional stratigraphy

“…pachydicranus) reports from the Upper Valanginian Criosarasinella furcillata Zone of the Western Carpathians, Slovakia. Mutterlose et al (2020) reported it from the uppermost Valanginian of La Charce, SE France. Wippich (2003) reported it from the base of the Hauterivian of the Atlas Mountains, Morocco.…”