Results 61 to 70 of about 824 (202)

Tellurium and Mercury in Late Cretaceous to Early Eocene Sediments as Proxies for Volcanic Activity in the Deccan and North Atlantic Large Igneous Provinces

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 2, February 2025.
Abstract Late Maastrichtian to Early Eocene sediments from Wadi Nukhul, Egypt were deposited between about 67 and 55.5 Ma during the eruption of the Deccan Traps and the North Atlantic Igneous Province (NAIP). We use Te and Hg as proxies for volcanism to constrain the timing of flood basalt volcanism relative to environmental perturbations and ...
Nils Björn Baumann, Marcel Regelous, Thierry Adatte, Anette Regelous, Karsten M. Haase, Hassan Khozyem   +5 more
wiley   +1 more source

Orbital-Scale Modulation of the Middle Miocene Third-Order Eustatic Sequences from the Northern South China Sea

Journal of Marine Science and Engineering
The Miocene Hanjiang Formation (HJF) is a remarkable exploration target in the Pearl River Mouth Basin (PRMB). However, challenges such as bias in current sequence stratigraphic schemes, limitations in high-resolution stratigraphic schemes, and ...
Haichun Xu, Nan Wu, Xinyan Xu, Bo Yu, Ke Xu   +4 more
doaj   +1 more source

On the duration of the Paleocene‐Eocene thermal maximum (PETM)

Geochemistry, Geophysics, Geosystems, 2007
The Paleocene‐Eocene thermal maximum (PETM) is one of the best known examples of a transient climate perturbation, associated with a brief, but intense, interval of global warming and a massive perturbation of the global carbon cycle from injection of ...
Ursula Röhl, Thomas Westerhold, Timothy J. Bralower, James C. Zachos   +3 more
doaj   +1 more source

Mercury Isotopes Track the Causes of Carbon Perturbations in the Early Permian Ocean and Continent

Geophysical Research Letters, Volume 52, Issue 2, 28 January 2025.
Abstract The Early Permian witnessed the first icehouse‐to‐greenhouse turnover of the vegetated Earth, yet its climate dynamics remain enigmatic. Here, we used mercury (Hg) isotopes from pelagic and continental successions at low paleo‐latitudes to track the perturbations of the global carbon (C) cycle and the climatic impact. Our results indicate that
Qiang Fang, Huaichun Wu, Jiubin Chen, Stephen E. Grasby, Wang Zheng, Shu‐zhong Shen, Wentao Huang, Junjie Xu, Shihong Zhang   +8 more
wiley   +1 more source

MEDITERRANEAN PLIOCENE BIOCHRONOLOGY: AN HIGH RESOLUTION RECORD BASED ON QUANTITATIVE PLANKTONIC FORAMINIFERA DISTRIBUTION

Rivista Italiana di Paleontologia e Stratigrafia, 2017
Quantitative analysis of planktonic foraminiferal assemblages from Mediterranean Pliocene sections evidenced several fluctuations in abundance which for 4 taxonomic units (Globorotalia inflata group, Globigerinoides ruber, Globigerinoides obliquus and ...
RODOLFO SPROVIERI
doaj   +1 more source

Southern Ocean and Southern African Monsoon Forcing of the Subtropical Indian Ocean Early Pliocene “Biogenic Bloom”

Paleoceanography and Paleoclimatology, Volume 39, Issue 12, December 2024.
Abstract The Pliocene epoch emerges as a pivotal juncture in Earth's climatic evolution, characterized by pronounced warmth and elevated atmospheric carbon dioxide compared to contemporary levels. While the broader climatic context of the Pliocene has garnered attention, there remains an outstanding gap in detailed paleoclimate reconstructions of the ...
D. N. Tangunan, J. A. Flores, L. J. LeVay, F. J. Jimenez‐Espejo, J. J. Coenen, M. A. Berke, A. Q. de Azevedo, M. A. Fuertes, J. Gruetzner, A. Starr, I. R. Hall   +10 more
wiley   +1 more source

Integrated bio- and cyclostratigraphy of Middle Triassic (Anisian) ramp deposits, NW Bulgaria

Geologica Carpathica, 2019
A cyclostratigraphic interpretation of peritidal to shallow-marine ramp deposits of the early Middle Triassic (Anisian) Opletnya Member exposed in outcrops along the Iskar River gorge, NW Bulgaria, is presented.
Ajdanlijsky George, Strasser André, Götz Annette E.   +2 more
doaj   +1 more source

SPECTRAL ANALYSIS BASED ON DATA OF DIFFERENT GEOCHEMICAL PARAMETERS OF A CORE FROM SEBKHA ENNOUAL, SOUTHEASTERN TUNISIA: HOLOCENE SUN-DRIVEN CYCLOSTRATIGRAPHY

, 2022
Elhoucine Essefi, Soumaya Hajji, Sana Bedoui   +2 more
openalex   +1 more source

Middle Pleistocene chronology of the sediment sequence from Rodderberg, Germany, Numerical dating versus wiggle matching: A reply

Journal of Quaternary Science, Volume 40, Issue 5, Page 916-921, July 2025.
Bernd Zolitschka, Frank Preusser, Junjie Zhang, Felix Bittmann   +3 more
wiley   +1 more source

High resolution cyclostratigraphy of the early Eocene – new insights into the origin of the Cenozoic cooling trend [PDF]

, 2009
Thomas Westerhold, Ursula Röhl
openalex   +2 more sources