Results 41 to 50 of about 43,211 (183)

Biostratigraphy and Paleoecological Inferences Based on Oligocene Calcareous Nannofossils from the Ceará Rise (ODP Leg 154, Site 929A): Equatorial Atlantic Ocean [PDF]

Anuário do Instituto de Geociências, 2020
The Ceará Rise is an aseismic feature located in the Equatorial Atlantic Ocean, between the Amazon Cone, Demerara Abyssal Plain and the Ceará Abyssal Plain, which represents a key area for the understanding of deep ocean facies. In the oil and gas field,
Anaiza Claudia Meira Devellard Fionda, André Luiz Gatto Motta, Claudia Maria Magalhães-Ribeiro, Flávia Azevedo Pedrosa Lemos, Maria Dolores Wanderley   +4 more
doaj   +1 more source

Calcareous nannofossils absolute abundance and accumulation rates from Dotterhausen, Germany

, 2019
Calcareous nannofossils absolute abundance and accumulation rates from Dotterhausen ...
Fabienne Giraud (2840888), Bernard Pittet (7184771), Emanuela Mattioli (7184768), Giraud, Fabienne, Pittet, Bernard, Julien Plancq (6974549), Baptiste Suchéras-Marx (6982523), Allemand, Pascal, Plancq, Julien, Pascal Allemand (6982526), Suchéras-Marx, Baptiste, Gilles Escarguel (7184774), Mattioli, Emanuela, Escarguel, Gilles   +13 more
core   +1 more source

Life After Impact: Paleobathymetric Gradients in Post‐K/Pg Nannoplankton Boom‐Bust Successions

Paleoceanography and Paleoclimatology, Volume 41, Issue 10, October 2026.
Abstract The Cretaceous/Paleogene (K/Pg) bolide impact ∼66 Ma caused the near‐demise of calcareous nannoplankton–key primary producers and major components of the biological pump that exports organic and inorganic carbon to the deep sea. Despite their ecological significance, resolving the exact impact of nannoplankton's mass extinction on ecosystem ...
Heather L. Jones, Lorna E. Kearns, Julio Sepúlveda, Christopher M. Lowery, Laia Alegret, Thomas Westerhold, M. Hedi Negra, Michael J. Henehan, Jessica H. Whiteside, Johan Vellekoop, Mark E. Patzkowsky, Timothy J. Bralower   +11 more
wiley   +1 more source

Calcareous nannofossils absolute abundance and accumulation rates from Blieux, France

, 2019
Calcareous nannofossils absolute abundance and accumulation rates from Blieux ...
Fabienne Giraud (2840888), Bernard Pittet (7184771), Emanuela Mattioli (7184768), Giraud, Fabienne, Pittet, Bernard, Julien Plancq (6974549), Baptiste Suchéras-Marx (6982523), Allemand, Pascal, Plancq, Julien, Pascal Allemand (6982526), Suchéras-Marx, Baptiste, Gilles Escarguel (7184774), Mattioli, Emanuela, Escarguel, Gilles   +13 more
core   +1 more source

New Constraints on the Onset of Antarctic Glaciation From Combined Radiogenic Hafnium and Neodymium Isotopes

Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.
Abstract The drawdown of atmospheric CO2 likely triggered Antarctic glaciation during the Eocene‐Oligocene Transition (34 Ma). Accurately constraining this shift from “greenhouse” to an “icehouse” climate is essential for understanding global carbon cycle dynamics.
Keehwan Lee, Franco Marcantonio, Michael Bizimis, Howie D. Scher, Brian W. Romans, Lucien Nana Yobo   +5 more
wiley   +1 more source

Calcareous nannofossils absolute abundance and accumulation rates from Plettenberg, Germany

, 2019
Calcareous nannofossils absolute abundance and accumulation rates from Plettenberg ...
Fabienne Giraud (2840888), Bernard Pittet (7184771), Emanuela Mattioli (7184768), Giraud, Fabienne, Pittet, Bernard, Julien Plancq (6974549), Baptiste Suchéras-Marx (6982523), Allemand, Pascal, Plancq, Julien, Pascal Allemand (6982526), Suchéras-Marx, Baptiste, Gilles Escarguel (7184774), Mattioli, Emanuela, Escarguel, Gilles   +13 more
core   +1 more source

DINOFLAGELLATE CYSTS AND CALCAREOUS NANNOFOSSILS FROM THE UPPER CRETACEOUS SARACENO FORMATION (CALABRIA, ITALY): IMPLICATIONS ABOUT THE HISTORY OF THE LIGURIDE COMPLEX

Rivista Italiana di Paleontologia e Stratigrafia, 2003
Organic-walled dinoflagellate cysts and calcareous nannofossils recovered from the turbidites of the Saraceno Formation outcropping in the type area (north-eastern Calabria, Italy) are presented. They provide new information about the age of the Saraceno
STEFANO TORRICELLI, MARIA ROSA AMORE
doaj   +1 more source

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

Publicación Electrónica de la Asociación Paleontológica Argentina, 2020
Foraminifera and calcareous nannofossils were studied in washed drill-cuttings of three wells from the Chilean sector of the Magallanes Basin. This contribution aims to identify, characterize and illustrate microfossil assemblages throughout the ...
Jens Michael Thissen, Juan Pablo Pérez Panera   +1 more
doaj   +1 more source

Northern Adriatic Runoff During Pliocene Sapropel Deposition: Implications for Mediterranean Deoxygenation

Paleoceanography and Paleoclimatology, Volume 41, Issue 9, September 2026.
Abstract The Piacenzian (Pliocene) warm period featured extreme low‐oxygen conditions and organic‐rich (sapropel) sedimentation in the Mediterranean Sea, yet the processes operating along northern borderlands and marginal basins remain poorly constrained.
A. M. Mancini, F. Caridi, G. Marino, R. Capozzi, C. Morigi, F. Dela Pierre, A. Negri   +6 more
wiley   +1 more source

Calcareous nannofossils absolute abundance and accumulation rates from Araas, Egypt

, 2019
Calcareous nannofossils absolute abundance and accumulation rates from Araas ...
Fabienne Giraud (2840888), Bernard Pittet (7184771), Emanuela Mattioli (7184768), Giraud, Fabienne, Pittet, Bernard, Julien Plancq (6974549), Baptiste Suchéras-Marx (6982523), Allemand, Pascal, Plancq, Julien, Pascal Allemand (6982526), Suchéras-Marx, Baptiste, Gilles Escarguel (7184774), Mattioli, Emanuela, Escarguel, Gilles   +13 more
core   +1 more source