Results 41 to 50 of about 511 (177)

Tracing the Migration of Fronts in the Pacific Southern Ocean Across the Mid‐Pleistocene Transition

Paleoceanography and Paleoclimatology, Volume 41, Issue 7, July 2026.
Abstract The Southern Ocean is a key driver of global climate variability, yet its dynamics during the Mid‐Pleistocene Transition (MPT; ∼1.25–0.7 Ma) remain poorly understood, especially in the South Pacific sector. The Polar Frontal Zone (PFZ) underwent significant latitudinal shifts during this critical period of climate reorganization.
V. M. Sinnen, O. Esper, M. Duffy, C. R. Riesselman, F. Lamy, T. Frederichs, C. B. Lange   +6 more
wiley   +1 more source

Sea‐Level and Frontal Controls on Diatom Deposition During the Mid‐Pleistocene Transition, Southern Cape Basin

Paleoceanography and Paleoclimatology, Volume 41, Issue 7, July 2026.
Abstract The Indian‐Atlantic Ocean Gateway modulates interocean exchange and influences large‐scale ocean circulation, including the Atlantic Meridional Overturning Circulation. Site U1479 (Cape Basin; IODP Expedition 361) lies at the Benguela‐Agulhas transition and records interactions among the Indian, Atlantic, and Southern Ocean basins during the ...
Jason J. Coenen, Francisco J. Jimenez‐Espejo, Erin L. McClymont, Deborah Tangunan, Justin Dodd, Rebecca S. Robinson, Ian R. Hall, Richard Norris, Melissa A. Berke, Leah LeVay, Eduardo Ruiz‐Marin, Reed Scherer   +11 more
wiley   +1 more source

Late Campanian (74–71 Ma) Arabia–Eastern Anatolia Collision and Its Geodynamic Implications

Tectonics, Volume 45, Issue 7, July 2026.
Abstract The East Anatolian Plateau is a major collisional feature within the Tethyan realm formed as a late‐stage result of the collision between East Anatolia and the Arabian Platform. The timing of this collision is highly debated, with estimates from the Late Cretaceous to the Miocene.
Remziye Akdoğan, Xiumian Hu, Gültekin Topuz, Aynur Hakyemez, Rita Catanzariti, Anlin Ma, Yalçın E. Ersoy, İbrahim Uysal   +7 more
wiley   +1 more source

Integrated stratigraphy of the Upper Barremian–Aptian sediments from the south-eastern Crimea

Geologica Carpathica, 2018
Previous studies made in different parts of the world have shown that Barremian–Aptian times imply many difficulties in deciphering the biostratigraphy, microfossil evolution and correlation of bioevents.
Karpuk Maria S., Shcherbinina Ekaterina A., Brovina Ekaterina A., Aleksandrova Galina N., Guzhikov Andrey Yu., Shchepetova Elena V., Tesakova Ekaterina M.   +6 more
doaj   +1 more source

Timing of the Albano‐Hellenic Paleomagnetic Rotation

Tectonics, Volume 45, Issue 7, July 2026.
Abstract The Aegean arc is the most prominent Mediterranean salient, characterized by significant paleomagnetic rotations along its limbs. Although it is well‐established that the external Ionian and Kruja zones of the Albano‐Hellenides underwent a ∼40° post‐Oligocene clockwise (CW) rotation relative to Africa/Adria, the rotation timing remains debated.
F. Feriozzi, F. Speranza, G. Siravo, P. Cipollari, L. Spagnuolo   +4 more
wiley   +1 more source

Minimal Perturbation of the Global Mercury Cycle by the Paraná–Etendeka Large Igneous Province (PE–LIP) During the Onset of the Valanginian Weissert Event

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract The Valanginian positive carbon isotope excursion (Weissert Event, ca. 135 million years ago) documents a major global carbon cycle and climate perturbation. Radioisotopic dating suggests that this event was broadly contemporaneous with an interval of profoundly enhanced volcanic activity during the emplacement of the Paraná–Etendeka Large ...
K. Krishnaswamy, J. Frieling, L. M. E. Percival, K. Littler, S. Reboulet, I. M. Fendley, T. A. Mather, S. A. Robinson   +7 more
wiley   +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

Osmium Isotope and Highly Siderophile Element Constraints on the Cretaceous/Paleogene Boundary in Western Pacific Pelagic Clay

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract The Cretaceous/Paleogene (K/Pg) Chicxulub impact produced globally synchronous enrichments of highly siderophile elements (HSEs) and a pronounced decline in marine osmium isotope ratios (187Os/188Os), forming a key geochemical marker of the boundary.
Honami Sato, Yoichi Usui, Kazuhide Mimura, Akira Ishikawa, Kazutaka Yasukawa, Junichiro Ohta, Yasuhiro Kato   +6 more
wiley   +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

Commentary: Reframing Massive Carbon Input During the PETM and a Grand 66 Million Year Geoscience Puzzle

Geophysical Research Letters, Volume 53, Issue 12, 28 June 2026.
Abstract Despite decades of research, hundreds of peer‐reviewed papers, and considerable relevance to Earth's future, the rapid global warming and tremendous CO2 input at the start of the Paleocene‐Eocene Thermal Maximum (PETM) remain highly debated.
Gerald R. Dickens
wiley   +1 more source