Results 41 to 50 of about 519 (182)

Paleosecular variations during the last glacial period from Tengchong Qinghai Lake, Yunnan Province, China [PDF]

, 2022
In recent years, the evolution of the magnetic flux lobes in terms of location and intensity has been attributed to paleosecular variation of the geomagnetic field, reflecting outer-core fluid convection close to the core-mantle boundary.
Zhou, Qixian, Toney, Jaime, Jaime Toney, Qixian Zhou, Xie, Yixuan, Zhang, Enlou, Yang, Xiaoqiang, Enlou Zhang, Zhang, Tingwei, Tingwei Zhang, Yixuan Xie, Xiaoqiang Yang   +11 more
core   +1 more source

New detailed paleosecular variation record at Santa Lucía archaeological site (Corrientes province, northeastern Argentina)

Geofísica Internacional, 2011
Se reporta información paleomagnética de una sección sedimentaria del sitio arqueológico Santa Lucía, provincia de Corrientes (Nordeste de Argentina). El magnetismo remanente natural obtenido en 74 especimenes orientados mostró una remanencia magnética ...
Hugo G. Nami
doaj   +1 more source

Paleomagnetic Constraints on the Separation of the Olongbuluke Block From the North China Block During the Late Cambrian–Middle Ordovician and Its Tectonic Significance

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract The collisional evolution of the micro‐blocks in the northeastern Tibetan Plateau is relatively well constrained. However, the reason why a fragment of the North China Block, the Olongbuluke Block, became separated from North China by the Central Qilian Block (a fragment of the South China Block) remains unclear.
Teng Wang, Yanan Zhou, Ruiyang Chai, Xin Cheng, Hanning Wu   +4 more
wiley   +1 more source

Influence of Data Filters on the Position and Precision of Paleomagnetic Poles: What Is the Optimal Sampling Strategy?

Geochemistry, Geophysics, Geosystems, 2022
To determine a paleopole, the paleomagnetic community commonly applies a loosely defined set of quantitative data filters that were established for studies of geomagnetic field behavior. These filters require costly and time‐consuming sampling procedures,
Dieke Gerritsen, Bram Vaes, Douwe J. J. vanHinsbergen   +2 more
doaj   +1 more source

Paleosecular Variation Constraints on Geomagnetic Field Morphology at ca. 1100 Ma

Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.
Abstract Paleosecular variation provides a statistical test of long‐term geomagnetic field morphology, but its behavior across Precambrian polarity regimes remains poorly constrained. We compile a virtual geomagnetic pole dispersion data set spanning 1130–1070 Ma and apply nonlinear Model G fitting to evaluate field structure across the interval ...
Hanqing Zhao, Shihong Zhang, Jikai Ding, Qiang Ren, Haiyan Li, Weiwei Bian, Tianshui Yang, Huaichun Wu   +7 more
wiley   +1 more source

Rapid Changes in Strength and Direction of Earth's Magnetic Field Over the Past 100,000 Years

Geochemistry, Geophysics, Geosystems
Previous studies of rapid geomagnetic changes have highlighted the most extreme changes in direction and field strength found in paleomagnetic field models over the past 100 ky. Here we study distributions of rates of change in both time and space. Field
Catherine G. Constable, Christopher J. Davies   +1 more
doaj   +1 more source

Paleomagnetic Evidence of Internal Rotation in the Eastern Qiangtang and Its Relation to Distributed Strike‐Slip Faulting in the Southeastern Tibetan Plateau

Geophysical Research Letters, Volume 53, Issue 11, 16 June 2026.
Abstract The southeastern Tibetan Plateau has undergone complex deformation due to the India‐Eurasia collision. Although late‐stage internal rotations are documented in the Lanping‐Simao Terrane to the south, it remains unclear whether similar processes have affected the north.
Wanlong Xu, Maodu Yan, Mathew Domeier, Chong Guan, Qiang Fu, Liang Yu, Zhichao Niu, Miaomiao Shen, Bingshuai Li, Dawen Zhang, Zunbo Xu, Yuwei Zhang   +11 more
wiley   +1 more source

Paleosecular variation record from Pleistocene-Holocene lava flows in southern Colombia

, 2022
Improvements in the spatial and temporal coverage of paleomagnetic data are essential to better evaluate paleofield behaviour over the past 10 Myr, especially due to data scarcity at low latitudes in the South American region.
de Oliveira, Wellington P, Biggin, Andrew J, Hartmann, Gelvam A, Rodriguez, Giovanny N, Trindade, Ricardo IF, Parra, Mauricio, Savian, Jairo F   +6 more
core   +1 more source

Northeastern Greenland Paleomagnetic Records Indicate the Influence of Geomagnetic Flux Lobe Intensity on Virtual Geomagnetic Pole Migration During the Holocene

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract Paleomagnetic and rock magnetic analyses were conducted on sediment cores from the northeastern Greenland Shelf and Young Sound along the western edge of Fram Strait. The paleomagnetic signal in all three sediment cores is characterized by a strong and stable single component magnetization carried by low coercivity ferrimagnetic single domain ...
Juliette Girard, Guillaume St‐Onge, Christof Pearce, France Lagroix, Marit‐Solveig Seidenkrantz, Katrine Juul Andresen, Jean‐Carlos Montero‐Serrano, Pierre Francus   +7 more
wiley   +1 more source

Very high resolution paleosecular variation record for the last ∼ 1200 years from the Aral Sea [PDF]

, 2003
A record of geomagnetic paleosecular variation (PSV) spanning the last ∼1200 years has been obtained from two lacustrine sediment cores from the north part of Aral Sea (Kazakhstan). Magnetic susceptibility and NRM intensity have been used for correlating
Bonani G., Hajdas I., Borisov A., Iassonov P., Heller F., Oberhänsli H., Nourgaliev D.   +6 more
core