Comment Objective utilization of data from DSDP Site 380 (Black Sea)

Speranta-Maria Popescu (1) , Mihaela Carmen Melinte-Dobrinescu (2) , Jean-Pierre Suc (3)

1 GeoBioStratData.Consulting
2 GeoEcoMar - National Institute for Marine Geology and Geo-ecology
3 iSTeP - Institut des Sciences de la Terre de Paris

van Baak et al. provide magnetostratigraphy for DSDP Hole 380A along a 175 m interval and a 40Ar/39Ar date at 706.8 mbsf. The biostratigraphic basis for their interpretation is the first consistent occurrence (FCO) of the dinoflagellate cysts Galeacysta etrusca and Caspidinium rugosum at 841 and 850 mbsf, respectively (Groothe et al., 2014), instead of at least 1009.36 mbsf as demonstrated by Suc et al. (2015) (Fig. 1A). Grothe et al. (2014) proposed an age of 6.1 Ma for this event from the Taman Peninsula. We repeat that the placement of this bioevent at 6.1 Ma is significantly lower in the sedimentary succession of Site 380 (Fig. 1A).

Domaines: Sciences de la Terre

Speranta-Maria Popescu, Mihaela Carmen Melinte-Dobrinescu, Jean-Pierre Suc. Comment Objective utilization of data from DSDP Site 380 (Black Sea). Terra Nova, 2016, 28 (3), pp.228-229. ⟨10.1111/ter.12209⟩. ⟨hal-01312909⟩