Results 41 to 50 of about 1,861 (213)

Sedimentation rates in the Makarov Basin, central Arctic Ocean: A paleomagnetic and rock magnetic approach [PDF]

, 2001
Three long sediment cores from the Makarov Basin have been subjected to detailed paleomagnetic and rock magnetic analyses. Investigated sediments are dominated by normal polarity including short reversal excursions, indicating that most of the sediments ...
Aksu, Bleil, Bleil, Bonhommet, Channell, Channell, Channell, Clark, Coles, Darby, Denham, Dominik Weiel, Frederichs, Gard, Gillot, Grantz, Gubbins, Guyodo, Hayashida, Heidi Kassens, Jackson, Jakobsson, Jokat, Kirschvink, Knies, Laj, Langereis, Liddicoat, Lovlie, Lund, Mangerud, Merril, Mienert, Morris, Nils Nørgaard-Pedersen, Norbert R. Nowaczyk, Nowaczyk, Nowaczyk, Nowaczyk, Nowaczyk, Nowaczyk, Nowaczyk, Quidelleur, Reimnitz, Robert F. Spielhagen, Rüdiger Stein, Schneider, Schubert, Scott, Smith, Spielhagen, Stein, Stein, Stoner, Stuiver, Stuiver, Sweeney, Tauxe, Tauxe, Thomas W. Frederichs, Volker, Weber   +61 more
core   +1 more source

Oriented Magnetite Inclusions in Plagioclase: Implications for the Anisotropy of Magnetic Remanence

Geochemistry, Geophysics, Geosystems, 2022
Micron to sub‐micron sized ferromagnetic inclusions in rock forming silicate minerals may give rise to particularly stable remanent magnetizations. When a population of inclusions have a preferred crystallographic or shape orientation in a rock, the ...
O. Ageeva, G. Habler, S. A. Gilder, R. Schuster, A. Pertsev, O. Pilipenko, G. Bian, R. Abart   +7 more
doaj   +1 more source

Correlation of peat sections of the Lower Priamurye based on the results of calculation of relative paleointensity

Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле
The paper considers the possibility of determining the age and correlating peat sections by solving the inverse problem of magnetostratigraphy based on the findings of comprehensive (palaeomagnetic, petromagnetic, microprobe, and radiocarbon) studies on ...
A.Yu. Peskov, A.N. Didenko, A.S. Karetnikov, M.A. Klimin, A.I. Tikhomirova, M.V. Arkhipov, N.V. Kozhemyako   +6 more
doaj   +1 more source

Speleothems as Magnetic Archives: Paleosecular Variation and a Relative Paleointensity Record From a Portuguese Speleothem

Geochemistry, Geophysics, Geosystems, 2018
We provide a high‐resolution and complete paleomagnetic study from a middle‐Holocene (~4,100–3,300 years Before Common Era, BCE) dome‐shaped speleothem (SPAIV) from Algarve, Portugal.
J. M. Ponte, E. Font, C. Veiga‐Pires, C. Hillaire‐Marcel   +3 more
doaj   +1 more source

Consistent and Contrasting Aspects of the Geomagnetic Field Across Epochs With Distinct Reversal Frequencies Revealed by Modeling the Kiaman Superchron

Geochemistry, Geophysics, Geosystems, 2021
This work presents an extensive directional paleomagnetic database of the Kiaman reversed superchron. It is composed of 1,459 paleomagnetic directions from igneous rocks corresponding to 91 data sets (or paleomagnetic poles).
Daniele Brandt, Marcia Ernesto, Catherine Constable   +2 more
doaj   +1 more source

Revisiting the Jurassic Geomagnetic Reversal recorded in the Lesotho Basalt (Southern Africa)

, 2003
We carried out a detailed and continuous paleomagnetic sampling of the reversed to normal geomagnetic transition recorded by some 60 consecutive flow units near the base of the Lesotho Basalt (183  1 Ma).
Camps, Cox, Hoffman, John Thompson, Laj, Liliane Faynot, Michel Prévot, Mireille Perrin, Morgan, Neil Roberts, Pierre Camps, Prévot, Prévot   +12 more
core   +2 more sources

Chronological Assessment of the Balta Alba Kurgan Loess-Paleosol Section (Romania) – A Comparative Study on Different Dating Methods for a Robust and Precise Age Model

Frontiers in Earth Science, 2021
Loess-paleosol sequences (LPSs) are important terrestrial archives of paleoenvironmental and paleoclimatic information. One of the main obstacles for the investigation and interpretation of these archives is the uncertainty of their age-depth ...
Stephanie Scheidt, Sonja Berg, Ulrich Hambach, Ulrich Hambach, Nicole Klasen, Stephan Pötter, Alexander Stolz, Daniel Veres, Christian Zeeden, Dominik Brill, Helmut Brückner, Stephanie Kusch, Christian Laag, Christian Laag, Frank Lehmkuhl, Martin Melles, Florian Monnens, Lukas Oppermann, Janet Rethemeyer, Janina J. Nett   +19 more
doaj   +1 more source

Rock‐magnetic artifacts on long‐term relative paleointensity variations in sediments

Geochemistry, Geophysics, Geosystems, 2013
Long‐term changes of geomagnetic field intensity, including possible dependence on lengths of polarity intervals, provide fundamentally important information for understanding the geodynamo. A positive correlation between paleointensity and polarity interval length was previously suggested from an Oligocene (ca. 23–34 Ma) relative paleointensity record
Toshitsugu Yamazaki, Yuhji Yamamoto, Gary Acton, Emily P. Guidry, Carl Richter   +4 more
openaire   +1 more source

On the use of calibrated relative paleointensity records to improve millennial‐scale geomagnetic field models [PDF]

Geochemistry, Geophysics, Geosystems, 2006
Current millennial‐scale time‐varying global geomagnetic field models suffer from a lack of intensity data compared to directional data, because only thermoremanently magnetized material can provide absolute information about the past field strength. The number of archeomagnetic artifacts that can provide such data diminishes rapidly prior to 3000 B.C.
Korte, M., Constable, C.
openaire   +4 more sources

A full sequence of the Matuyama–Brunhes geomagnetic reversal in the Chiba composite section, Central Japan

Progress in Earth and Planetary Science, 2020
Geological records of the Matuyama–Brunhes (M–B) geomagnetic reversal facilitate the development of an age model for sedimentary and volcanic sequences and help decipher the dynamics of the Earth’s magnetic field.
Yuki Haneda, Makoto Okada, Yusuke Suganuma, Takahiro Kitamura   +3 more
doaj   +1 more source