Results 51 to 60 of about 1,861 (213)

Impact of Upward Oxygen Diffusion From the Oceanic Crust on the Magnetostratigraphy and Iron Biomineralization of East Pacific Ridge-Flank Sediments

Frontiers in Earth Science, 2021
Recent measurements of pore-water oxygen profiles in ridge flank sediments of the East Pacific Rise revealed an upward-directed diffusive oxygen flux from the hydrothermally active crust into the overlying sediment.
Adrian Felix Höfken, Adrian Felix Höfken, Tilo von Dobeneck, Tilo von Dobeneck, Thomas Kuhn, Sabine Kasten, Sabine Kasten, Sabine Kasten   +7 more
doaj   +1 more source

A 2.14‐Myr astronomically tuned record of relative geomagnetic paleointensity from the western Philippine Sea [PDF]

Journal of Geophysical Research: Solid Earth, 2003
We present a 2.14‐Myr astronomically tuned relative geomagnetic paleointensity record from the western Philippine Sea. Pseudosingle‐domain titanomagnetite is the only magnetic mineral identified and variations in titanomagnetite concentration fall well within the accepted limits for relative paleointensity variations.
Horng, C-S., Roberts, A.P., Liang, W-T.
openaire   +3 more sources

Archeointensity Database and Geomagnetic Field Reference Curves for South America Over the Past 5 Millennia

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract The study of variations in geomagnetic field intensity over time and space is crucial to understand the evolution of the geodynamo and its interactions with the Earth's surface. In this work, we introduce the SAGEOMAG (South America GEOMAGnetic) database, a comprehensive and updated repository of geomagnetic field intensity records derived ...
Victor J. O. Marum, Filipe Terra‐Nova, Gelvam A. Hartmann, Erwan Thébault, Plinio Jaqueto, Wilbor Poletti, Ricardo I. F. Trindade   +6 more
wiley   +1 more source

Expedition 306 summary

, 2006
The overall aim of the North Atlantic paleoceanography study of Integrated Ocean Drilling Program Expedition 306 is to place late Neogene–Quaternary climate proxies in the North Atlantic into a chronology based on a combination of geomagnetic ...
Aboud, Essam, Acton, Gary D., Akimoto, Kazumi, Alvarez Zarikian, Carlos A., Bailey, Ian, Bjørklund, Kjell R., Evans, Helen, Fang, Nianqiao, Ferretti, Patrizia, Gruetzner, Jens, Guyodo, Yohan J.B., Hagino, Kyoko, Harris, Robert, Hatakeda, Kentaro, Hefter, Jens Norbert, Higgins, Sean M., Judge, Shelley A., Kanamatsu, Toshiya, Kulhanek, Denise K., Nanayama, Futoshi, Nielsen, Simon H.H., Ohno, Masao, Rashid, Harunur, Sierro Sanchez, Francisco J., Stein, Ruediger, Voelker, Antje, Zhai, Qiumin   +26 more
core   +1 more source

Distance‐Dependent Stray Field Decay in Magnetically Stable Remanence Carriers: Implications for Magnetic Microscopy

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 3, March 2026.
Abstract Micropaleomagnetic analysis offers a path to high‐precision reconstructions of ancient magnetic fields from terrestrial and space‐returned samples by inverting the vertical stray field of individual particles to recover their magnetic moments through the use of magnetic microscopes.
U. D. Bellon, G. F. Souza‐Junior, W. Williams, L. Uieda, A. R. Muxworthy, L. Nagy, G. A. Paterson, C. S. Moraes, R. Fu, R. I. F. Trindade   +9 more
wiley   +1 more source

Records of geomagnetic reversals from volcanic islands of French Polynesia : 1. Paleomagnetic study of a polarity transition in a lava sequence from the island of Huahine [PDF]

, 1990
Présentation d'une étude paléomagnétique concernant une transition du champ magnétique terrestre enregistrée par les laves de l'île de ...
Duncan, R.A., Roperch, Pierrick
core   +1 more source

Evidence for Missing Geomagnetic Reversals From Geomagnetic Reversal Frequency Model Using Adaptive Kernel Density Estimation

Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.
Abstract The existence of missing geomagnetic reversals has been proposed, with potential for new magnetostratigraphic age controls. We estimate geomagnetic reversal frequency from 0 to 155 Ma using adaptive‐bandwidth kernel density estimation (AKDE) to evaluate data sparseness and to assess how reversal frequency changes when recently identified ...
Yutaka Yoshimura, Masakazu Fujii, Hideitsu Hino, Shotaro Akaho, Satoshi Kuriki, Osamu Ishizuka, Toshitsugu Yamazaki, Hyeon‐Seon Ahn, Tesfaye Kidane, Yuhji Yamamoto, Yo‐ichiro Otofuji   +10 more
wiley   +1 more source

Derivation of Del180 from sediment core log data\u27 Implications for millennial-scale climate change in the Labrador Sea [PDF]

, 2001
Sediment core logs from six sediment cores in the Labrador Sea show millennial-scale climate variability during the last glacial by recording all Heinrich events and several major Dansgaard-Oeschger cycles.
A. E. Aksu, Andrews, Best, Bond, Bond, Broecker, C. Hillaire-Marcel, Dansgaard, Dowdeswell, F. Rack, Francois, G. Bilodeau, Grootes, Hagelberg, Hamilton, Hamilton, Harris, Heinrich, Hillaire-Marcel, Hillaire-Marcel, Hiscott, Holler, Kissel, L. A. Mayer, Lazier, M. E. Weber, Mayer, Mayer, Mayer, McAyeal, McCave, Mienert, Moros, Oppo, Paillard, Pisias, R. N. Hiscott, Rasmussen, Schön, Shackleton, Stoner, Stoner, Sy, Weber, Weber, Wood   +45 more
core   +2 more sources

Behavior of Greigite‐Bearing Marine Sediments During AF and Thermal Demagnetization and Its Significance

Geochemistry, Geophysics, Geosystems, 2020
Gyro‐remanent magnetization (GRM) is a frequently occurring yet unwanted remanence contamination for certain samples during alternating field (AF) demagnetization of the natural remanent magnetization.
Zongqi Duan, Qingsong Liu, Huafeng Qin, Xixi Zhao, Xing Gao   +4 more
doaj   +1 more source

Reconstructing Late Pleistocene to Prehistorical Holocene Geomagnetic Field Variations From La Palma Lava Flows (Canary Islands, Spain): Unraveling Viscous Components

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract We present new vector paleomagnetic data from 13 radiometrically dated lava‐flows in southern La Palma (Canary Islands) spanning from 1 to 56 ka, which covers most of the Late Pleistocene to prehistoric Holocene volcanic record in the island.
Eva Vernet, Manuel Calvo‐Rathert, Ángel Carrancho, Yuhji Yamamoto, Lidia Rodríguez‐Méndez, Josep M. Parés, Vicente Soler   +6 more
wiley   +1 more source