Results 21 to 30 of about 476,528 (304)

The Early Miocene Provenance Shift of ODP Site 1177 and Implications for the Tectonic Evolution of the Shikoku Basin, Philippine Sea Plate

Frontiers in Earth Science, 2022
The Ocean Drilling Program Site 1177 recovered the oldest (∼23 Ma) sedimentary records in the Shikoku Basin, northeastern part of the Philippine Sea Plate.
Wei Liu, Wei Liu, Wanyi Feng, Congcong Gai, Yang Zhou, Yi Zhong, Wei Cao, Yuanjie Li, Xixi Zhao, Qingsong Liu, Qingsong Liu   +10 more
doaj   +1 more source

Evidence for Widespread Remagnetizations in South America, Case Study of the Itararé Group Rocks From the State of São Paulo, Brazil

Frontiers in Earth Science, 2018
Paleomagnetism of South American Jurassic/Cretaceous rocks has been troubled by elongated distributions of poles which has led to contrasting interpretations.
Dario Bilardello, William C. Callebert, William C. Callebert, Joshua R. Davis   +3 more
doaj   +1 more source

The magnetic record of the Late Glacial-Holocene transition in sediments from Grandfather Lake (Southwest Alaska)

Geofísica Internacional, 1999
Las mediciones preliminares de propiedades magnéticas en muestras de un núcleo de 8.5 m. de longitud del lago Granfather (suroeste de Alaska), indican que la magnetización remanente de estos sedimentos reside en magnetita con comportamiento de ...
Pieter A. Vlag, Subir K. Banerjee
doaj   +1 more source

Rock magnetism

Eos, Transactions American Geophysical Union, 1971
Work in rock magnetism during the last 4 years in the United States has been concentrated on several important intrinsic problems, the solutions of which are needed to answer some of the larger questions now being raised in paleomagnetism. The questions include whether it is feasible to measure variations in geomagnetic field intensity in rocks as old ...
Subir Banerjee, Allan Cox
openaire   +1 more source

Variations in the Magnetic Properties of Meteoritic Cloudy Zone

Geochemistry, Geophysics, Geosystems, 2020
Iron and stony‐iron meteorites form the Widmanstätten pattern during slow cooling. This pattern is composed of several microstructures whose length‐scale, composition and magnetic properties are dependent upon cooling rate.
Claire I. O. Nichols, James F. J. Bryson, Roberts Blukis, Julia Herrero‐Albillos, Florian Kronast, Rudolf Rüffer, Aleksandr I. Chumakov, Richard J. Harrison   +7 more
doaj   +1 more source

Magnetic Vortex States in Small Octahedral Particles of Intermediate Titanomagnetite

Geochemistry, Geophysics, Geosystems, 2018
Fine particles of titanomagnetites (Fe3‐xTixO4, x > 0.5) in the pseudo‐single‐domain (PSD) size (0.5–20 μm) are important carriers of natural remanent magnetization in basalts.
E. Khakhalova, B. M. Moskowitz, W. Williams, A. R. Biedermann, P. Solheid   +4 more
doaj   +1 more source

Remagnetization of Marcellus Formation in the Plateau Province of the Appalachian Basin

Frontiers in Earth Science, 2019
An integrated paleomagnetic, magnetic fabric, and petrographic study of two cores (EC, oriented; DB, unoriented) in the Devonian Marcellus Formation from the Plateau Province (PA) indicates the presence of chemical remanent magnetizations (CRMs) and ...
Alex Kayla Steullet, R. Douglas Elmore, Matt Hamilton, Gerhard Heij   +3 more
doaj   +1 more source

Separating Geometry‐ From Stress‐Induced Remanent Magnetization in Magnetite With Ilmenite Lamellae From the Stardalur Basalts, Iceland

Geochemistry, Geophysics, Geosystems, 2020
Realistic geometries of magnetite grains from the Stardalur volcano, Iceland, were obtained by Focused Ion Beam Scanning Electron Microscopy nanotomography. These magnetite grains are subdivided by oxidation‐exsolution lamellae of ilmenite.
G. W. terMaat, K. Fabian, N. S. Church, S. A. McEnroe   +3 more
doaj   +1 more source

Investigating the utility of a high-temperature Thellier-style paleointensity experimental protocol

Earth, Planets and Space, 2021
High-quality data are vital to the research field of paleointensity, which has long suffered from poor-quality and/or sparse data. Previous paleointensity work has established that repeatedly heating specimens increases the opportunity for thermochemical
J. Michael Grappone, James M. Russell, Andrew J. Biggin   +2 more
doaj   +1 more source

Rock Magnetism in Iceland [PDF]

Nature, 1955
RECENT studies by J. Hospers1 have revealed that Icelandic basalts fall into two groups with respect to their remanent magnetization. In one group the direction of magnetization is close to the present direction of the geomagnetic field. In the other group the magnetization has the opposite direction. Intermediate directions are rarely found.
TRAUSTI EINARSSON, THORBJÖRN SIGURGEIRSSON   +1 more
openaire   +1 more source