Results 51 to 60 of about 1,486 (212)

Lower miocene stratigraphy of the Eastern Paratethys: Problems and state of the art [PDF]

Geološki Anali Balkanskoga Poluostrva
The Lower Miocene regional stages of the Eastern Paratethys, the Caucasian, Sakaraulian, and Kozakhurian, have been recognized in different structural facies zones of the basin and have no reliable universal stratigraphic basis for defining their ...
Golovina Larisa, Aleksandrova Galina, Popov Sergey, Bylinskaya Marina, Koiava Kakhaber, Pinchuk Tatyana   +5 more
doaj   +1 more source

Eocene belemnites from Hungary

Papers in Palaeontology, Volume 12, Issue 2, March/April 2026.
Abstract The Middle Eocene nummulitic limestone at Dudar, Transdanubian Hungary, has yielded several belemnite rostra during the last 60–70 years. The correct interpretation of these fossils was made possible by the fact that one of these specimens retained the remnants of the conotheca within the alveolus, while others preserved the conical, tapering ...
András Galácz
wiley   +1 more source

Palaeoecological change preceded the Palaeocene-Eocene Thermal Maximum by 200 kyr in the high latitude south-west Pacific Ocean

Communications Earth & Environment
The Palaeocene-Eocene Thermal Maximum ca. 55.93 Ma is considered one of the best geological analogues for worst-case, near-future climate states. During this warming interval, calcareous nannoplankton—critical marine primary producers and important ...
Heather L. Jones, Bryan Niederbockstruck, Thomas Westerhold, Ursula Röhl   +3 more
doaj   +1 more source

HIGH-RESOLUTION CALCAREOUS NANNOFOSSIL BIOSTRATIGRAPHY ACROSS THE TOARCIAN OCEANIC ANOXIC EVENT IN NORTHERN ITALY: CLUES FROM THE SOGNO AND GAJUM CORES (LOMBARDY BASIN, SOUTHERN ALPS)

Rivista Italiana di Paleontologia e Stratigrafia, 2021
Calcareous nannofossil biostratigraphy was conducted across the Toarcian Oceanic Anoxic Event (T-OAE) interval cored at Colle di Sogno and Gajum in the Lombardy Basin (Southern Alps, Northern Italy).
STEFANO VISENTIN, ELISABETTA ERBA
doaj   +1 more source

Terrestrial Ecosystem Response to Changing Temperature and Seasonality in the Paleocene‐Eocene Thermal Maximum: Shallow Marine Records From the Salisbury Embayment, USA

Paleoceanography and Paleoclimatology, Volume 41, Issue 3, March 2026.
Abstract The Paleocene‐Eocene thermal maximum (PETM, ∼56 Ma) is marked by a massive and rapid rise in atmospheric CO2 and ∼5°C of global warming. It is globally characterized by a negative carbon isotope excursion (CIE), and, at least locally, is preceded by a pre‐onset excursion (POE).
Debra A. Willard, Mei Nelissen, Appy Sluijs, Henk Brinkhuis, Tammo Reichgelt, Marci Robinson, Jean M. Self‐Trail   +6 more
wiley   +1 more source

Calcareous nannofossil communities during Late Triassic Mass Extinction and Early Jurassic recovery in the NW Tethys: evidence from Slovakia, Western Carpathians [PDF]

Acta Palaeontologica Polonica
The first calcareous nannoplankton extinction and recovery close to the Triassic/Jurassic boundary (TJB) were studied in two Tatra Mountains sections of Kardolína and Furkaska.
Katarína Holcová, Matic Rifl, Jozef Michalík   +2 more
doaj   +1 more source

Revised History of Pleistocene Vertical Motions in NE Sicily and Southern Calabria, Italy, From 40Ar/39Ar Dating and Fault Zone Morphology

Tectonics, Volume 45, Issue 2, February 2026.
Abstract Long‐term rates of crustal uplift in southern Calabria and NE Sicily are incompletely understood due to limited information about the age of marine terraces at 1.0–1.3 km above sea level (asl). This study provides a new constraint on high‐elevation terrace ages through integrated analysis of geochronology, stratigraphy, shoreline modeling, and
Rebecca J. Dorsey, Gianfranco Di Vincenzo, Marco Meschis, Sergio G. Longhitano, William Cavazza, Domenico Chiarella   +5 more
wiley   +1 more source

Stable isotope and calcareous nannofossil assemblage record of the late Paleocene and early Eocene (Cicogna section) [PDF]

Climate of the Past, 2016
We present records of stable carbon and oxygen isotopes, CaCO3 content, and changes in calcareous nannofossil assemblages across an 81 m thick section of upper Paleocene–lower Eocene marine sedimentary rocks now exposed along the Cicogna Stream in ...
C. Agnini, D. J. A. Spofforth, G. R. Dickens, D. Rio, H. Pälike, J. Backman, G. Muttoni, E. Dallanave   +7 more
doaj   +1 more source

Relationship and Source of Whitings Used as a Painting Ground in Icons From Polish Museum Collections Based on Their Calcareous Nannofossil Content

Archaeometry, Volume 68, Issue 1, Page 132-143, February 2026.
ABSTRACT In icon painting, chalk whiting is key to creating a gesso ground, providing a smooth, absorbent surface for paint. Calcareous nannofossils, tiny marine skeletons found in chalk, are an ideal tool for analyzing the origin of an icon's chalk ground, often the only reliable information about where the icon came from.
Mariusz Kędzierski, Mirosław P. Kruk
wiley   +1 more source

The 3D submicron-scale skeletal reconstruction of Nannoconus (Cretaceous calcareous nannofossil) – Insights into biomineralization [PDF]

Biogeosciences
Nannoconus (∼ 5–20 µm) was a major planktonic producer in the Early Cretaceous seas (∼ 150–120 Ma). The heavy calcitic skeletons (micaliths; ∼ 200–1400 picogram) of this extinct nannoplankton genus have contributed to massive carbonate accumulations for ...
R. Chowdhury, R. Chowdhury, R. Chowdhury, R. Boudjehem, B. Suchéras-Marx, M. Dupraz, A. Kulow, J. C. da Silva, J. L. Hazemann, M.-P. Aubry, J. Pérez, A. Fernandez-Martinez, F. Giraud   +12 more
doaj   +1 more source