Buscar
Mostrando ítems 1-10 de 122
The calcareous nannofossils and magnetostratigraphic results from the Upper Tithonian-Berriasian of Feodosiya region (Eastern Crimea)
(Slovak Academic Press Ltd, 2019-08)
This article is concerned with nannofossil study of Tithonian-Berriasian sediments of Eastern Crimea. The NJT 16, NJT 17a, NJT 17b, NKT, and NK 1 nannofossil zones were determined. The occurrence of Nannoconus kamptneri ...
New latitude-based nannofossil zonations for the Campanian–Maastrichtian of the South Atlantic Ocean and their paleoceanographic implications
(Elsevier Science, 2016-04)
The global evolution of calcareous nannofossils during the Campanian–Maastrichtian interval is not fully understood, and nannofossil zonations for the central and South Atlantic Ocean are yet to be constructed. Here, we ...
The calcareous nannofossil Sollasites falklandensis (Coccolithophyceae) and its biostratigraphic and palaeoceanographic importance in the Albian of the Austral Basin, Argentina
(Academic Press Ltd - Elsevier Science Ltd, 2011-12)
The presence of the calcareous nannofossil Sollasites falklandensis has been recorded in four exploration boreholes in the southeastern Austral Basin at levels assigned an Early to Middle Albian age. This study evaluates ...
Late Eocene to early Oligocene calcareous nannofossil biostratigraphy of the Cerro Colorado Formation, Austral basin, Argentina
(Pergamon-Elsevier Science Ltd, 2021-12)
This paper documents calcareous nannofossil assemblages and the bioevents recorded in the Austral basin of Tierra del Fuego, Argentina. Fifty samples from the type section of the Cerro Colorado Formation were analyzed. ...
Late Maastrichtian to Danian organic-walled dinoflagellate cysts and calcareous nannofossils from eastern Austral Basin, Patagonia, Argentina
(Elsevier Science, 2021-02-02)
Late Maastrichtian to Danian dinoflagellate cyst and calcareous nannofossil biostratigraphy was analyzed at the Sur Río Chico borehole, Austral Basin, Argentina. Two stratigraphical intervals from the 965 to 1003 m below ...
Calcareous nannofossils from the Santa Marta Formation (Upper Cretaceous), northern James Ross Island, Antarctic Peninsula
(Elsevier, 2015-07)
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 ...
Cenozoic microfossil (Foraminifera and calcareous nannofossils) assemblages from the subsurface Magallanes Basin, Tierra del Fuego Island, ChileEnsambles de microfósiles (foraminíferos y nanofósiles calcáreos) cenozoicos del subsuelo de la cuenca de Magallanes, Isla de Tierra del Fuego, Chile
(Asociación Paleontológica Argentina, 2021-05-21)
Foraminifera and calcareous nannofossils from washed drill-cuttings of three wells in the Chilean sector of the Magallanes Basin were studied. This contribution aims to identify, characterize and illustrate microfossil ...
Calcareous nannofossil assemblages and their significance in defining the of the Jurassic/Cretaceous boundary
(Asociación Paleontológica Argentina, 2021)