Calcareous nannofossils from the Santa Marta Formation (Upper Cretaceous), northern James Ross Island, Antarctic Peninsula. (September 2015)

• Record Type: Journal Article
• Authors: Guerra, Rodrigo do Monte; Concheyro, Andrea; Lees, Jackie; Fauth, Gerson; de Araujo Carvalho, Marcelo; Cabral Ramos, Renato Rodriguez
• Is Part Of: Cretaceous research. Volume 56(2015)
• Page Start: 550
• Page End: 562
• Publication Date: 2015-09
• Subjects: Calcareous nannofossils -- James Ross Island -- Antarctic Peninsula -- Cretaceous -- Early Campanian -- Gephyrobiscutum diabolum; Geology, Stratigraphic -- Cretaceous -- Periodicals; 551.77
• DOI: 10.1016/j.cretres.2015.06.009
• Languages: English
• ISSNs: 0195-6671

Abstract

Abstract: This study reports on the most stratigraphically extensive nannofloras yet recovered from the Lachman Crags Member of the Santa Marta Formation, James Ross Island, Antarctic Peninsula. The productive samples are dated as early Campanian. These ages are in accord with those provided by ammonites, foraminifera, ostracods and radiolarians from the same locality. The consistent and relatively abundant presence of Gephyrobiscutum diabolum throughout the productive part of the section, a species that has previously only been documented from the Falkland Plateau, extends its geographic distribution to higher latitudes, at least to the Antarctic Peninsula area.