Results 91 to 100 of about 2,212 (217)

A stacked record of relative paleointensity for the past 500 ka in the western equatorial Indian Ocean

, 2023
<p>High-quality relative paleointensity (RPI) is important for the study of Earth Interior and sediments dating. Many existing high-resolution RPI curves have been obtained from the North Atlantic and Pacific Ocean.
Zhou Liang
core   +1 more source

(Fig. 11) Pseudo-Thellier relative paleointensity (PT-RPI) estimates of sediment core GeoB8601-3

, 2010
(Fig. 11) Pseudo-Thellier relative paleointensity (PT-RPI) estimates of sediment core GeoB8601-
Bleil, Ulrich, Dillon, Melanie, Ulrich Bleil (6962114), Melanie Dillon (6965366)   +3 more
core   +1 more source

Archeointensity estimates of a tenth-century kiln: first application of the Tsunakawa–Shaw paleointensity method to archeological relics

Earth, Planets and Space, 2018
Paleomagnetic information reconstructed from archeological materials can be utilized to estimate the archeological age of excavated relics, in addition to revealing the geomagnetic secular variation and core dynamics.
Yu Kitahara, Yuhji Yamamoto, Masao Ohno, Yoshihiro Kuwahara, Shuichi Kameda, Tadahiro Hatakeyama   +5 more
doaj   +1 more source

A paleointensity technique for multidomain igneous rocks

Geochemistry, Geophysics, Geosystems, 2013
We developed a paleointensity technique to account for concave‐up Arai diagrams due to multidomain (MD) contributions to determine unbiased paleointensities for 24 trial samples from site GA‐X in Pleistocene lavas from Floreana Island, Galapagos Archipelago.
Wang, Huapei, Kent, Dennis V.
openaire   +4 more sources

Evidence for an Exceptionally Weak Cambrian Geomagnetic Field: New Paleointensity Estimates From the Florida Mountains, New Mexico

Geochemistry, Geophysics, Geosystems
The timing of the formation of the Earth's inner core remains a major mystery in the history of Earth's deep interior, with estimates ranging from >1 billion years to
J. Michael Grappone, Annique van der Boon, Roger R. Fu, Andrew J. Biggin   +3 more
doaj   +1 more source

(Fig. 11) Pseudo-Thellier relative paleointensity (PT-RPI) estimates of sediment core GeoB6007-2

, 2010
(Fig. 11) Pseudo-Thellier relative paleointensity (PT-RPI) estimates of sediment core GeoB6007-
Bleil, Ulrich, Dillon, Melanie, Ulrich Bleil (6962114), Melanie Dillon (6965366)   +3 more
core   +1 more source

Paleointensity estimates from oceanic gabbros: Effects of hydrothermal alteration and cooling rate [PDF]

, 2013
Gabbros recovered by previous ocean drillings were investigated in paleointensity and rock magnetic experiments. The young ages of the samples (ca. 0.78-1.3 Ma) enable a direct comparison between the plutonic paleointensity and volcanic data. Microscopic
Yoichi Usui, Usui, Yoichi, 106521, 20609862, 臼井, 洋一   +4 more
core   +1 more source

Brunhes Paleomagnetic Directions and Paleointensities From Northern Hainan Island

Geochemistry, Geophysics, Geosystems
Paleomagnetic studies typically assume that the long‐term, time‐averaged geomagnetic field behaves as a geocentric axial dipole (GAD). While paleodirectional data over the past five million years generally agree with GAD predictions, mid‐to‐low latitude ...
Mengqing Wang, Huapei Wang, Huafeng Qin, Jian Luo, Chen Wen, Fei Han, Yiming Ma, Jiabo Liu   +7 more
doaj   +1 more source

A comparison of different techniques for relative paleointensity

Geophysical Research Letters, 1998
Parallel relative paleointensity records that are supposed to display the same geomagnetic variations often show discrepancies. We compared various techniques of normalization with different parameters involving alternating fields (a.f.) and thermal demagnetization of sediment samples spanning the same period from the Indian and the Pacific oceans. The
Jean‐Pierre Valet, Laure Meynadier
openaire   +1 more source

The intensity of the geomagnetic field from 2.4 Ga old Indian dykes

Geochemistry, Geophysics, Geosystems, 2014
Precambrian paleomagnetic records from dyke swarms provide a unique source of information regarding the Archean geomagnetic field and more specifically the average field strength produced by the early dynamo.
Jean‐Pierre Valet, Jean Besse, Anil Kumar, Sayoob Vadakke‐Chanat, Edouard Philippe   +4 more
doaj   +1 more source