Results 31 to 40 of about 2,615 (200)

Early development of anoxia prior to the main euxinic phase of the Jenkyns Event on the margin of the Western Tethys (Sachrang Basin, Eastern Alps)

Sedimentology, EarlyView.
ABSTRACT Although the global expansion of oxygen‐depleted marine environments during the Early Toarcian Jenkyns Event (or Toarcian Oceanic Anoxic Event) is primarily inferred from successions in the NW European epicontinental basins, the timing of the expansion of anoxia in Tethyan basins, where hydrography potentially played a minor role, is poorly ...
Tamás Müller, Stefan Neumeister, Jan Schlögl, Emanuela Mattioli, Hans‐Jürgen Gawlick, Thomas J. Algeo, Adam Tomašových   +6 more
wiley   +1 more source

Productivity response of calcareous nannoplankton to Eocene Thermal Maximum 2 (ETM2) [PDF]

Climate of the Past, 2012
The Early Eocene Thermal Maximum 2 (ETM2) at ~53.7 Ma is one of multiple hyperthermal events that followed the Paleocene-Eocene Thermal Maximum (PETM, ~56 Ma).
M. Dedert, H. M. Stoll, D. Kroon, N. Shimizu, K. Kanamaru, P. Ziveri   +5 more
doaj   +1 more source

Calcareous nannoplankton dating of the Late Quaternary deposits in Greece and the eastern Mediterranean: Case studies from terrestrial and marine sites

Journal of Palaeogeography, 2015
The distribution and abundance of Emiliania huxleyi (E. huxleyi) assemblages in the marine sediments of the Aravonitsa Plateau, Greece, and from the eastern Mediterranean are used (1) to evaluate the calcareous nannoplankton NN21a and NN21b biozones and ...
Maria V. Triantaphyllou
doaj   +1 more source

Scaled biotic disruption during early Eocene global warming events [PDF]

, 2012
Late Paleocene and early Eocene hyperthermals are transient warming events associated with massive perturbations of the global carbon cycle, and are considered partial analogues for current anthropogenic climate change.
Murphy, B.H., Edgar, K.M., Bown, P.R., P. R. Bown, Sluijs, A., B. H. Murphy, Pälike, H., Zachos, J. C., Bolton, Clara, Edgar, K. M.; id_orcid, Bolton, C.T., Paelike, H., Edgar, Kirsty M., Gibbs, S.J., Gibbs, Samantha J., Pälike, Heiko, Murphy, B. H., C. T. Bolton, A. Sluijs, H. Pälike, K. M. Edgar, J. C. Zachos, Zachos, J.C., S. J. Gibbs, Edgar, K. M., Marine Palynology, Marine palynology and palaeoceanography, Bown, P. R., Bown, Paul R., Murphy, Brandon H., Sluijs, Appy, Bolton, C. T., Gibbs, S. J., Zachos, James C.   +33 more
core   +3 more sources

Orbital Control of Reticulofenestra (Calcareous Nannofossils) Assemblages During the Early Pliocene

Paleoceanography and Paleoclimatology, Volume 41, Issue 9, September 2026.
Abstract Orbital changes have shaped Earth's climate system and influenced the evolution and spatial distribution of marine plankton, including coccolithophores. Some studies have assessed eccentricity's impact on the diversity and morphological evolution of Noelaerhabdaceae taxa during the Quaternary.
Laura Martín‐García, Francisco J. Jiménez‐Espejo, Diana Ochoa, Emília Salgueiro, Montserrat Alonso‐García, Timothy Herbert, Fatima Abrantes, David Hodell, José‐Abel Flores   +8 more
wiley   +1 more source

Learning From Crushing Failures: Changes in Physical Properties Reveal the Mechanics of Submarine Carbonate Landslides

Basin Research, Volume 38, Issue 5, September‐October 2026.
Changes in the physical properties of calcareous ooze between intact weak layers and glide planes within the same stratigraphy provide new constraints on the deformation processes and mechanical factors that control the mobility and erosive behaviour of submarine carbonate landslides.
Yan Li, David M. Hodgson, Jeff Peakall, Nan Wu, Mike Clare   +4 more
wiley   +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

SELANDİYEN-İPRESİYEN YAŞLI GÜNEY FORMASYONU (ULUKIŞLA BASENİ) NANNOPLANKTON BİYOSTRATİGRAFİSİ VE BU DÖNEME AİT DENİZ SUYU ISI DEĞİŞİMLERİ

Bulletin of the Mineral Research and Exploration, 2009
Bu araştırmada Ereğli-Ulukışla havzasında yüzeylenen Selandiyen-İpresiyen yaşlı kumtaşı-şeyl ardalanmasından oluşan Güney formasyonunun nannoplankton florası incelenmiştir.
Manolya SINACI, Vedia TOKER
doaj  

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

CALCAREOUS NANNOPLANKTON OF CALLOVIAN OF UKRAINE

Collection of Scientific Works of the Institute of Geological Sciences of the NAS of Ukraine, 2013
Наведені дані вивчення вапняного нанопланктону з розрізів Дніпровсько-Донецької западини, Північно-Західного Донбасу, Гірського Криму. Аналіз поширення нанофосилій з вивчених розрізів, а також з розрізів Московської синеклізи, Саратовського Поволжя та Канівських дислокацій дозволяє виділити в келовеї дві нанопланктонні зони: Stephanolithuin hexum ...
Matveyev, A.V., Bondarev, D.S.
openaire   +3 more sources