Results 81 to 90 of about 1,479 (206)

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

Late Mesoproterozoic Rapid True Polar Wander Recorded in the Jingeryu Formation, North China Craton

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 8, August 2025.
Abstract Disentangling short‐duration (≤10 Ma) true polar wander (TPW) events in the Precambrian presents a significant challenge, necessitating the acquisition of high‐resolution and ‐quality paleomagnetic data and well‐determined age relations. This study reports new paleomagnetic results from carbonate sequences of the Jingeryu Formation in the ...
Hanqing Zhao, Shihong Zhang, Jikai Ding, Qiang Ren, Jianping Qu, Kunkun Yang, Haiyan Li, Tianshui Yang, Huaichun Wu   +8 more
wiley   +1 more source

Palaeogeography of a shallow carbonate platform: The case of the Middle to Late Oxfordian in the Swiss Jura Mountains

Journal of Palaeogeography, 2015
The Oxfordian (Late Jurassic) carbonate-dominated platform outcropping in the Swiss Jura Mountains offers a good biostratigraphic, sequence-stratigraphic, and cyclostratigraphic framework to reconstruct changes in facies distribution at a time-resolution
André Strasser, Bernard Pittet, Wolfgang Hug   +2 more
doaj   +1 more source

AstroGeoFit. A Genetic Algorithm and Bayesian Approach for the Astronomical Calibration of the Geological Timescale

Paleoceanography and Paleoclimatology, Volume 40, Issue 8, August 2025.
Abstract Variations in Earth's orbit and axial tilt induce climatic changes which are recorded in sedimentary deposits. The frequencies of these cyclical variations are integer combinations of the main secular frequencies of the solar system. Analyzing these cycles in sedimentary records can help establish an astronomical time scale for the geological ...
N. Hoang, J. Laskar, N. C. Hara, Y. Wu, A. Sultanov, M. Sinnesael, T. Westerhold, P. Bujons   +7 more
wiley   +1 more source

Unraveling the late Permian evolution of the Paraná Basin: a revised stratigraphic and sedimentological framework [PDF]

Brazilian Journal of Geology
Since its definition over 120 years ago, several key sedimentological and stratigraphic questions have emerged regarding the Estrada Nova succession (Serra Alta and Teresina/Corumbataí formations) of the Paraná Basin.
Beatriz Christofoletti, Mariza Gomes Rodrigues, Lucas Veríssimo Warren, Filipe Giovanini Varejão, Marcello Guimarães Simões, Jaísa Barbieri de Mello, Mario Luis Assine   +6 more
doaj   +2 more sources

Magnetostratigraphy and cyclostratigraphy of the Rainstorm Member of the Johnnie Formation, Desert Range, Nevada [PDF]

, 2019
Presented at the 2019 Santa Fe Conference on Rock MagnetismKodama, Kenneth P. (2019). Magnetostratigraphy and cyclostratigraphy of the Rainstorm Member of the Johnnie Formation, Desert Range, Nevada.
Kodama, Kenneth P
core  

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

, 2022
The aim of this work is to investigate the sedimentary cycles recorded along a 160 cm core carried out at the Ennoual wetland. Sampling had taken place every 2 cm in order to reucperate 80 samples.
ESSEFI, ELHOUCINE, SOUMAYA HAJJI, SANA BEDOUI, ELHOUCINE ESSEFI, HAJJI, SOUMAYA, BEDOUI, SANA   +5 more
core   +1 more source

Astronomical Chronology Framework of the Lingshui Formation (Oligocene) in the Northern South China Sea

Journal of Marine Science and Engineering
This study has determined the period of sedimentation of the Lingshui Formation as the Oligocene (Rupelian-Chattian) through biostratigraphic data, including planktonic foraminifera zonation.
Jianhao Liang, Yaning Wang, Shangfeng Zhang, Yubing Liang, Gaoyang Gong, Rui Han   +5 more
doaj   +1 more source

Astronomical Orbital Cycle-Driven Coevolution of Paleoclimate and Sea Level with Sedimentary Response: A Case Study from the Upper Member of the Miocene Zhujiang Formation in the Enping Depression, South China Sea

Applied Sciences
This study focuses on the upper section of the Zhujiang Formation in the Enping Sag of the Zhujiangkou Basin in the South China Sea, investigating the mechanisms by which astronomical orbital cycles drive paleoclimate, sea-level fluctuations, and ...
Shangfeng Zhang, Chenjun Zeng, Enze Xu, Yaning Wang, Rui Zhu, Rui Han, Gaoyang Gong   +6 more
doaj   +1 more source

EVALUATING REPETITION IN SEDIMENTARY SUCCESSIONS USING HIGH RESOLUTION INTEGRATED STRATIGRAPHY: AN EXAMPLE IN THE LOWER PLIOCENE SEQUENCE OF ODP HOLE 975B

Rivista Italiana di Paleontologia e Stratigrafia, 2010
The Lower Pliocene succession recovered at ODP Hole 975B (Balearic Basin, western Mediterranean) displays a sudden increase in sedimentation rate, in disagreement with the lithological homogeneity that characterizes the succession.
AGATA DI STEFANO
doaj   +1 more source