Results 21 to 30 of about 42,104 (227)

The early/middle Eocene transition at the Ésera valley (South Central Pyrenees): Implications in Shallow Benthic Zones (SBZ)

Geologica Acta, 2022
An integrated study including magnetostratigraphy, larger benthic foraminifera and calcareous nannofossil biostratigraphy is presented herein. This work was performed in shallow marine siliciclastics rich in larger foraminifera, around the Ypresian ...
Adriana Rodríguez-Pintó, Josep Serra-Kiel, Gilen Bernaola, Antonio Barnolas, Emilio L. Pueyo, Josep Tosquella, Pau Arbués, Robert Scholger   +7 more
doaj   +3 more sources

Calcareous nannofossil and ammonite integrated biostratigraphy across the Jurassic – Cretaceous boundary strata of the Kopanitsa composite section (West Srednogorie Unit, southwest Bulgaria)

Geologica Carpathica, 2018
Calcareous nannofossil, calpionellid and ammonite occurrences have been directly constrained across the Jurassic–Cretaceous boundary interval in the section of Kopanitsa, SW Bulgaria.
Stoykova Kristalina, Idakieva Vyara, Ivanov Marin, Reháková Daniela   +3 more
doaj   +1 more source

CENOZOIC MICROFOSSIL (FORAMINIFERA AND CALCAREOUS NANNOFOSSILS) ASSEMBLAGES FROM THE SUBSURFACE MAGALLANES BASIN, TIERRA DEL FUEGO ISLAND, CHILE

Publicación Electrónica de la Asociación Paleontológica Argentina, 2021
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 assemblages throughout the Cenozoic
Jens Michael Thissen, Juan Pablo Pérez Panera   +1 more
doaj   +1 more source

THE OLIGOCENE/MIOCENE BOUNDAR Y IN THE EQUATORIAL ATLANTIC DSDP SITE 354. RESULTS OF STUDIES ON PLANKTIC FORAMINIFERA AND CALCAREOUS NANNOFOSSILS

Rivista Italiana di Paleontologia e Stratigrafia, 2023
A first order correlation between planktic foraminiferal and calcareous nannofossil events o( DSDP Site 354 in the Equatorial Atlantic is presented. Within the 323 m thick, discontinuously cored section, 30 sarnples have been studied.
MILENA BlOLZI
doaj  

Biostratigraphy and Paleoenvironmental Reconstruction at the Gebel Nezzazat (Central Sinai, Egypt): A Paleocene Record for the Southern Tethys

Geosciences, 2022
The variations in assemblages of calcareous nannofossils are tracked in the Dakhla and Tarawan Formations exposed at Gebel Nezzazat (central Sinai, Egypt). Five calcareous nannofossil biozones, namely NP2/3, NP4, NP5, NP6, and NP7/8 are identified.
Atef M. Kasem, Mahmoud Faris, Luigi Jovane, Taysir Abdelhamid Ads, Fabrizio Frontalini, Amr S. Zaky   +5 more
doaj   +1 more source

Nannofossils from the Middle Eocene Sabiñánigo Sandstone Formation in the Jaca Basin (southern Pyrenees): biostratigraphy and paleoenvironmental implications [PDF]

Journal of Micropalaeontology
This study presents the first detailed data on calcareous nannofossil assemblages from the Sabiñánigo Sandstone Formation in the Jaca Basin (central south Pyrenees). This formation is mainly composed of deltaic and outer-shelf sediments.
E. R. Lasluisa, O. Oms, E. Remacha, A. González-Lanchas, H. Blanchar-Roca, J. A. Flores   +5 more
doaj   +1 more source

NEW BIOSTRATIGRAPHIC AND LITHOLOGICAL DATA ON THE NEOGENE AND QUATERNARY OF THE LIVORNO AREA (TUSCANY, CENTRAL ITALY)

Rivista Italiana di Paleontologia e Stratigrafia, 2020
Lithofacies analyses and datings using calcareous nannofossils, proved to be an excellent opportunity to understand the palaeoenvironmental evolution of the area of the Tuscan coast, washed up by the Ligurian Sea.
RITA CATANZARITI, SIMONE DA PRATO
doaj   +1 more source

TRIASSIC AND JURASSIC CALCAREOUS NANNOFOSSILS OF THE PIZZO MONDELLO SECTION: A SEM STUDY

Rivista Italiana di Paleontologia e Stratigrafia, 2012
Pizzo Mondello is a ca. 500 m thick pelagic-hemipelagic succession cropping out in Sicily consisting of a nodular cherty limestone facies association of late Carnian to late Norian age.
NEREO PRETO, MANUEL RIGO, CLAUDIA AGNINI, ANGELA BERTINELLI, CHIARA GUAIUMI, STEFANO BORELLO, HILDEGARD WESTPHAL   +6 more
doaj   +1 more source

CALCAREOUS NANNOFOSSIL TAXONOMY AND BIOSTRATIGRAPHY OF THE TOARCIAN-LOWER BAJOCIAN COLLE DI SOGNO SECTION (LOMBARDY BASIN, SOUTHERN ALPS, ITALY)

Rivista Italiana di Paleontologia e Stratigrafia, 2023
Calcareous nannofossil biostratigraphy was conducted in the Toarcian-lower Bajocian interval at Colle di Sogno (Lombardy Basin, Southern Alps, Northern Italy) where the type-section of the Sogno Formation consisting of pelagic marly limestone, marlstone
STEFANO VISENTIN, GIULIA FAUCHER, Elisabetta Erba   +2 more
doaj   +1 more source

MAASTRICHTIAN TO EOCENE CALCAREOUS NANNOFOSSIL BIOSTRATIGRAPHY FROM THE TABIAGO SECTION, BRIANZA AREA, NORTHERN ITALY

Rivista Italiana di Paleontologia e Stratigrafia, 2008
Calcareous nannofossil biostratigraphic investigations have been carried out on samples collected from the Tabiago section, Brianza, northern Italy. This section records early Maastrichtian (CC23b nannofossil zone) to early Eocene (NP10 nannofossil zone)
FABRIZIO TREMOLADA, DARIO SCIUNNACH, GIANCARLO SCARDIA, ISABELLA PREMOLI SILVA   +3 more
doaj   +1 more source