Results 41 to 50 of about 291 (173)

High Geomagnetic Reversal Frequency During the Middle to Late Ediacaran (∼570 Ma) Constrained by Integrated Magneto‐ and Cyclostratigraphy

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract The Ediacaran–Cambrian (∼635–539 Ma) geomagnetic field is characterized by unusually high reversal rates and markedly weakened field strength. Estimates of these reversal frequencies can reveal key aspects of deep Earth dynamics and their potential influence on surface environments and early complex life.
J. W. L. Afonso, R. M. Rocha, D. R. Franco, N. B. Dos Santos, C. G. Leandro, P. Franceschinis, A. E. Rapalini, M. J. Arrouy, L. E. Gómez‐Peral, D. G. Poiré, S. Caetano‐Filho, H. D. Brito, R. I. F. Trindade   +12 more
wiley   +1 more source

Internal and External Modulation of Folding Rates With 104 to 105 Year Time Resolutions From Growth Strata, Pico del Aguila, Spain

Geochemistry, Geophysics, Geosystems, 2021
High‐resolution cyclostratigraphy in growth strata are used to reconstruct unsteady folding rates at the regional‐scale Pico del Aguila anticline, southern Pyrenees, to evaluate deformation modulation. Magnetic polarity stratigraphy was used to calibrate
David J. Anastasio, Kenneth P. Kodama, Josep M. Parés, Linda A. Hinnov, Bruce D. Idleman   +4 more
doaj   +1 more source

Pacing Early Mars Sedimentary Rock Formation

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract Mars' sedimentary rock record documents past surface and/or near‐surface liquid water. However, paleoclimate models struggle to explain conditions warm enough for past liquid water. One hypothesis is transient warming by H2 ${\mathrm{H}}_{2}$‐CO2 ${\text{CO}}_{2}$ collision‐induced absorption (CIA) (H2 ${\mathrm{H}}_{2}$‐CO2 ${\text{CO}}_{2 ...
M. L. Turner, E. S. Kite
wiley   +1 more source

Aligning and synchronization of MIS5 proxy records from Lake Ohrid (FYROM) with independently dated Mediterranean archives: implications for DEEP core chronology [PDF]

Biogeosciences, 2016
The DEEP site sediment sequence obtained during the ICDP SCOPSCO project at Lake Ohrid was dated using tephrostratigraphic information, cyclostratigraphy, and orbital tuning through the marine isotope stages (MIS) 15-1. Although this approach is suitable
G. Zanchetta, E. Regattieri, B. Giaccio, B. Wagner, R. Sulpizio, A. Francke, H. Vogel, L. Sadori, A. Masi, G. Sinopoli, J. H. Lacey, M. J. Leng, N. Leicher   +12 more
doaj   +1 more source

Iron–Phosphorus–Carbon Coupled Cycling in Lacustrine System of Ordos Basin During the Middle Triassic

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 2, February 2026.
Abstract Widespread organic‐rich shales are associated with perturbations in productivity or preservation conditions; however, the major controlling factors, especially the phosphorus (P) and iron (Fe) interactions and their impacts on organic carbon burial in the paleolake ecosystem remain poorly understood.
Bo Wang, Rukai Zhu, Pengcheng Ju, Quanyou Liu, Weiming Xu, Peng Li, Wang Zhang, Xinping Liang   +7 more
wiley   +1 more source

The regional evolution of a dryland fluvio‐aeolian and lacustrine succession in response to allocyclic forcing: insights from the Early Permian Cutler Group, Utah, USA

Sedimentology, Volume 73, Issue 2, Page 297-354, February 2026.
ABSTRACT Preserved allocyclic signatures in the rock record often reflect basin‐scale climatic variability and serve as key proxies for correlating ancient dryland successions. The notion of climate cyclicity, however, remains largely untested on regionally constrained, outcrop‐calibrated studies.
Oliver Button, Jack G. Connor, Ross P. Pettigrew, Ben A. Kilhams, John A. Howell   +4 more
wiley   +1 more source

A >70‐Myr‐Long Geomagnetic Field Reversal Hyperactivity Across the Ediacaran‐Cambrian Transition

Geophysical Research Letters, Volume 52, Issue 23, 16 December 2025.
Abstract The long‐term variation of the geomagnetic field is a key constraint for unraveling the geodynamo processes and the evolution of Earth's deep interior. However, the geomagnetic reversal pattern during the Ediacaran–Cambrian transition remains elusive. Here we present an integrated magneto‐ and cyclo‐stratigraphic study of a ∼1.8‐Myr‐long, late
Fuyun Shen, Bin Wen, Phil J. A. McCausland, Zheng Gong, Zongmin Zhu, Fangzheng Liu, Jingyi Wang   +6 more
wiley   +1 more source

Disentangling Continental Weathering During the Late Paleozoic Ice Age

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract The consumption of atmospheric CO2 through continental weathering played a critical role in shaping the evolution of the late Paleozoic Ice Age (LPIA), presumably driven by the Hercynian orogeny and the evolution of terrestrial plants. However, the relative impacts of these two major drivers to continental weathering remain poorly constrained.
Biao Gao, Guozhen Xu, Wenli Yang, Jitao Chen   +3 more
wiley   +1 more source

Reconstructing Early Cenozoic Paleodrainage and Tectonic Evolution in the Southeastern Tibetan Plateau: Evidence From Detrital Zircon and Tourmaline Provenance

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 10, October 2025.
Abstract The Paleogene sedimentary basins of southeastern Tibet record sediment dispersal patterns associated with crustal deformation during the early stages of the India–Asia collision. We present detrital zircon U–Pb geochronology, tourmaline geochemistry, and petrographic data from the Gonjo and Mangkang basins that suggest a reginal interconnected
Yuquan Jiang, Linlin Li, Yingying Li, Xiangjiang Yu, Zhongtai He, Dewen Li   +5 more
wiley   +1 more source

Astronomically forced lake-level fluctuations with impact on sand-body distribution of the oligocene Huagang Formation in the Xihu Depression, east China sea shelf basin

Frontiers in Earth Science
The Late Oligocene Huagang Formation in the Xihu Depression, East China Sea Shelf Basin, records typical braided river delta deposits. However, the influence of astronomical forcing on sand-body distribution remains unclear.
Yueli Liang, Xiaoming Zhao, Xiaoming Zhao, Xi Zhang, Xi Zhang, Jiawang Ge, Jiawang Ge, Guofeng Yin, Kun Qi, Kun Qi, Massine Bouchakour, Massine Bouchakour, Minxin Yang, Jianwei Wang   +13 more
doaj   +1 more source