Results 51 to 60 of about 41,370 (230)

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

Fluid Pathways and Sources Driving Recurring Pockmark Formation on the Chatham Rise, New Zealand

Basin Research, Volume 38, Issue 5, September‐October 2026.
Quasi‐3D seismic data interpretation and spatial pattern analysis indicate that pockmark formation on the SW Chatham Rise is likely driven by a combination of compaction‐related dewatering during polygonal faulting and silica diagenesis, coupled with deeply‐sourced, possibly CO2‐rich fluids from subducted limestones migrating along prominent basement ...
Fynn Warnke, Ingo A. Pecher, Lorna J. Strachan, Jess I. T. Hillman, Gareth Crutchley   +4 more
wiley   +1 more source

Calcareous nannofossils absolute abundance and accumulation rates from Chionistra, Greece

, 2019
Calcareous nannofossils absolute abundance and accumulation rates from Chionistra ...
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

First record of Gitolampas subrotundus (Cotteau, 1856) (Echinoidea) from the Late Paleocene of Iran [PDF]

Geološki Anali Balkanskoga Poluostrva, 2019
In this paper we present the first record of well preserved specimens of Gitolampas subrotundus (Cotteau, 1856) from the Late Paleocene of Iran (Jorasan Razavi county, northeast Iran).
Carrasco Jose Francisco, Taherpour-Khalilabad Morteza, Taheri Jafar, Ahmadi-Kooshki Maryam, Majidifard Mahmoud Reza   +4 more
doaj   +1 more source

THE DISTRIBUTION RANGE OF CALCAREOUS NANNOFOSSIL SPECIES RETICULOFENESTRA PSEUDOUMBILICUS IN THE MIOCENE: AN EXAMPLE OF ECOLOGICAL INFLUENCE ON EVOLUTIONARY DEVELOPMENT

Rivista Italiana di Paleontologia e Stratigrafia, 2023
Reticulofenestra pseudoumbilicus is a Neogene calcareous nannofossil species whose highest stratigraphic occurrence (Top) is a reliable biohorizon in the Pliocene, calibrated at 3.82 Ma.
Amalia Notaro, ISABELLA RAFFI, DANIELE REGHELLIN   +2 more
doaj   +1 more source

Event Deposits Recorded Over the Past 800 kyr in IODP Hole U1433A (South China Sea): Implications of a Revised Methodology for Chronology and Paleoclimate Reconstruction

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract Instantaneous event deposits such as turbidites, debrites, and slumps are common and frequently occur in marginal seas. These instantaneous deposits represent seconds to days in duration, and can therefore significantly impact age‐depth models and interpretation of paleoclimate history based on thick sedimentary sequences recovered in deep ...
Xunpeng Li, Shuang Sun, Yuwei Zhang, Ziqiang Mao, Lina Jin, Yulong Zhao, G. Ian Alsop, Zhifei Liu, Yin Lu   +8 more
wiley   +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

Hydrothermal Manganese‐Oxide Mineralization of a Carbonate Ooze, Samoan Hotspot Region, South Pacific Ocean

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract Low‐temperature hydrothermal manganese oxides occur throughout the global oceans. However, the hydrothermal replacement of a carbonate ooze by manganese oxides is described here for the first time. The 24 samples dredged from three locations around the Territory of American Samoa in the South Pacific Ocean include six samples with remnant ...
James R. Hein, Amy Gartman, Kira Mizell, Mark Baskaran, Anthony Koppers, Hubert Staudigel   +5 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

Climate conditions on the South‐Iberian Palaeomargin during the latest Pliensbachian to early Toarcian: A mineralogical and geochemical study from hemipelagic deposits

Sedimentology, Volume 73, Issue 5, Page 1631-1663, August 2026.
ABSTRACT The integrated analysis of lithofacies, mineralogy and geochemistry of the hemipelagic marine succession exposed in La Cerradura section (South‐Iberian Palaeomargin) provides new information to characterise the palaeoenvironmental conditions during the latest Pliensbachian to early Toarcian, including the Jenkyns Event.
Chaima Ayadi, Isabel Abad, Elisa Laita, Ali Mokhtar Samet, Matías Reolid   +4 more
wiley   +1 more source