Results 91 to 100 of about 4,431,213 (212)

Paleomagnetic Pole Positions and Geomagnetic Secular Variation from the Cretaceous Ponta Grossa Dike Swarm (Brazil)

Geofísica Internacional, 2015
A detailed paleomagnetic and rock magnetic investigation has been carried out on the Early Cretaceous Ponta Grossa dike swarm in southern Brazil. This formation seems an excellent target for paleomagnetic study.
Miguel Cervantes Solano, Avto Goguitchaichvili, Mabel Mena, Luis Alva-Valdivia, Juan Morales Contreras, Ruben Cejudo Ruiz, Héctor López–Loera, Ana María Sole, Jaime Urrutia-Fucugauchi   +8 more
doaj   +1 more source

A new Holocene record of geomagnetic secular variation from Windermere, UK [PDF]

, 2017
Paleomagnetic secular variation (PSV) records serve as valuable independent stratigraphic correlation and dating tools for marine and terrestrial sediment sequences, and enhance knowledge of geomagnetic field dynamics.
Avery, Rachael S., Bull, Jonathan M., Cotterill, Carol J., Croudace, Ian W., Fielding, J. James, Kemp, Alan E.S., Pearce, Richard B., Xuan, Chuang   +7 more
core   +1 more source

Termination of Laurentia's Rapid Plate Motion at the Start of the Grenvillian Orogeny

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 8, August 2025.
Abstract Late Mesoproterozoic to Neoproterozoic sedimentary sequences within the Lake Superior region preserve critical paleogeographic records of the position of Laurentia spanning from the end of Midcontinent Rift extension through to the end of the Grenvillian Orogeny.
Anthony J. Fuentes, Luke M. Fairchild, Eben B. Hodgin, Tadesse Alemu, Nicholas Swanson‐Hysell   +4 more
wiley   +1 more source

Pliocene–Pleistocene Paleomagnetic Secular Variation and Time‐Averaged Field From the Northern Volcanic Zone of the Andes, Colombia

Earth and Space Science
Paleomagnetic results obtained from 38 Pliocene—Pleistocene volcanic flows from the Knot of the Pastos and surroundings of Puracé volcano and Popayán (southwestern Colombia) are presented.
A. Sánchez‐Duque, V. Mejia, M. P. Torres, A. Pinilla   +3 more
doaj   +1 more source

Sensitivity of the Geomagnetic Octupole to a Stably Stratified Layer in the Earth's Core

, 2018
Current "Earth-like" numerical dynamo simulations are able to reproduce many characteristics of the observed geomagnetic field. One notable exception is the geomagnetic octupolar component. Here we investigate whether a stably stratified layer at the top
Stanley, Sabine, Yan, Chi
core   +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

A Lake Record of Geomagnetic Secular Variations for the Last 23 ka From Lake Chala: Toward a Composite Directional Lake Record of the Earth's Magnetic Field for Equatorial East Africa

Geochemistry, Geophysics, Geosystems
The documentation and understanding of variations in the Earth's magnetic field through time is fundamental for several disciplines, but current geomagnetic models rely on datasets heavily biased toward the mid‐ and high northern latitudes.
A. Di Chiara, M. W. Hounslow, B. A. Maher, V. Karloukovski, M. Van Daele, M. Blaauw, D. Verschuren   +6 more
doaj   +1 more source

Paleomagnetic and rock-magnetic survey of Brunhes lava flows from Tancitaro volcano, Mexico [PDF]

Geofísica Internacional, 2009
This study presents paleomagnetic results from Tancitaro volcanism in the Michoacan Guanajuato Volcanic Field, western Mexico, as a contribution to the time averaged field global database. Detailed paleomagnetic and rock-magnetic studies were carried out
C. Caballero Miranda, J. Urrutia Fucugauchi, L. Alva Valdivia, J. Morales, B. Aguilar Reyes, V. C. Ruíz Martínez, V. H. Garduño Monroy, A. Goguitchaichvili, R. Maciel Peña, A. Goguitchaichvili, V. H. Garduño Monroy, V. C. Ruiz Martinez, B. Aguilar, Reyes, J. Morales L. Alva-Valdivia, C. Caballero Miranda and J. Urrutia-Fucugauchi   +8 more
doaj  

Magnetic alteration of zero-age oceanic basalt [PDF]

, 1996
The youngest sampled submarine lava flow, which erupted June 1993 on the Juan de Fuca Ridge, provides the basis for a tight constraint on the initial or zero-age magnetization state of MORB.
Gee, Jeffrey S., Kent, Dennis V.
core   +2 more sources

Toward a More Stable Supercontinent Columbia in the Statherian

Geophysical Research Letters, Volume 52, Issue 12, 28 June 2025.
Abstract During the mid‐Proterozoic, nearly all of Earth's continents collided to form supercontinent Columbia. However, the exact timing of its formation is still debated, with estimates ranging from 1.8 to 1.6 Ga. This period, known as the Statherian, is also debated for its affinity to either the Paleoproterozoic or Mesoproterozoic eras.
Chong Wang, Peng Peng, Ross N. Mitchell, Chenglong Deng, Johanna Salminen, Yebo Liu, Uwe Kirscher   +6 more
wiley   +1 more source