Results 41 to 50 of about 4,906 (222)

Short Note: A simple, alternative presentation of paleomagnetic demagnetization data [PDF]

Geofísica Internacional, 1999
Most research articles on paleomagnetism and rock-magnetism published since 1967 use vector component diagrams (known as Zijderveld diagrams) to describe and investigate the directional stability and intensity decay of remanent magnetization during ...
Avto Goguitchaichvili
doaj  

Detecting and correcting for paleomagnetic inclination shallowing of sedimentary rocks: A review

Frontiers in Earth Science, 2016
Magnetic anisotropy and the elongation/inclination (E-I) approaches have been increasingly employed as two important means for detecting and correcting the paleomagnetic inclination shallowing in sedimentary rocks that was first recognized sixty years ...
Yong-Xiang eLi, Kenneth P. Kodama
doaj   +1 more source

Understanding Nonideal Paleointensity Recording in Igneous Rocks: Insights From Aging Experiments on Lava Samples and the Causes and Consequences of “Fragile” Curvature in Arai Plots

Geochemistry, Geophysics, Geosystems, 2021
The theory for recording of thermally blocked remanences predicts a quasilinear relationship between low fields like the Earth's in which rocks cool and acquire a magnetization.
L. Tauxe, C.N. Santos, B. Cych, X. Zhao, A.P. Roberts, L. Nagy, W. Williams   +6 more
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High-Resolution Petrographic Evidence Confirming Detrital and Biogenic Magnetites as Remanence Carriers for Zongpu Carbonates in the Gamba Area, South Tibet

Frontiers in Earth Science, 2021
Paleocene carbonates from the Gamba area of South Tibet provide the largest paleomagnetic dataset for constraining the paleogeography of the India-Asia collision in the early stage.
Qian Zhao, Baochun Huang, Zhiyu Yi, Pengfei Xue   +3 more
doaj   +1 more source

Problems With Net Tectonic Rotation for Dikes and Suggestions for Alternative Approaches

Geochemistry, Geophysics, Geosystems, 2021
The net tectonic rotation method is an alternative to paleomagnetic tilt corrections. The method was originally developed for sedimentary rocks and lavas, which have paleohorizontal indicators, but was later adapted for dikes by assuming that dikes ...
Sarah J. Titus, Joshua R. Davis
doaj   +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

ADRIA AS PROMONTORY OF AFRICA AND ITS CONCEPTUAL ROLE IN THE TETHYS TWIST AND PANGEA B TO PANGEA A TRANSFORMATION IN THE PERMIAN

Rivista Italiana di Paleontologia e Stratigrafia, 2018
It has been almost 60 years since the first results from the Early Permian Bolzano Quartz Porphyries from the Trento Plateau of northern Italy (Southern Alps) showed paleomagnetic inclinations steeper than inclinations from broadly coeval units from ...
GIOVANNI MUTTONI, DENNIS V. KENT
doaj   +1 more source

Vanadium Isotopic Compositions of the High‐3He/4He Baffin Island Lavas

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 8, August 2026.
Abstract The isotopic composition of vanadium (V) in hotspot lavas provides new insight into the source of deep mantle heterogeneities. We measured V isotopic compositions in Paleogene Baffin Island lavas, which erupted above the Iceland plume head, to constrain the mantle plume source. These lavas have V isotopic compositions that are lighter (−0.96 ± 
Jonas Kaare‐Rasmussen, Forrest Horton, Maureen Auro, Andy W. Heard, Sune G. Nielsen   +4 more
wiley   +1 more source

Low Geomagnetic Field Intensity in Southern China 6,000 Years Ago

Geophysical Research Letters
The West Pacific Anomaly (WPA), a low geomagnetic field anomaly observed in the 16th to 18th centuries, represents a recently recognized and complex feature of Earth's magnetic field.
Xin Luo, Jiabo Liu, Huapei Wang, Maximilian Schanner, Yuan Zhang, Peng Xie, Jigen Tang, Peng Han, Quan Li, Fei Han, Xiaowei Chen, Chen Wen, Wen Zhong, Yufan Hu, Qingsong Liu   +14 more
doaj   +1 more source

A Relative Paleointensity (RPI)-Calibrated Age Model for the Corinth Syn-rift Sequence at IODP Hole M0079A (Gulf of Corinth, Greece)

Frontiers in Earth Science, 2022
The Corinth basin (Greece) is a young continental rift that recorded cyclic basin paleoenvironment variations (i.e., marine to lacustrine) caused by glacio-eustatic sea level fluctuations during its initial connection to the global oceans.
Marco Maffione, Emilio Herrero-Bervera
doaj   +1 more source