Results 61 to 70 of about 519 (182)

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

Energy regime of the geodynamo during the Cretaceous Normal Superchron via paleosecular variation and paleointensity [PDF]

, 2012
The Earth's magnetic field underwent hundreds of reversals during its history. But within a ~40 Myr span (84-125 Ma) during the Cretaceous no reversal happened. For comparison, the second longest chron length during the last 167 Ma is ~5 Myr. Thus, the ~
Kollofrath, Julia
core  

Depopulation of the Northern Border of Mesoamerica during the Early Postclassic: Evidence from the Reappraisal of Archaeomagnetic Data

Land, 2022
The Mesoamerican Postclassic and Epiclassic were periods of drastic change and transformation related to social, political and economic aspects as well as settlement patterns.
Alejandra García Pimentel, Avto Goguitchaichvili, Carlos Torreblanca, Vadim Kravchinsky, Miguel Cervantes, Rafael García, Rubén Cejudo, Francisco Bautista, Juan Morales   +8 more
doaj   +1 more source

Geomagnetic paleosecular variation recorded in Plio‐Pleistocene volcanic rocks from Possession Island (Crozet Archipelago, southern Indian Ocean)

, 2001
International audiencePossession Island, in the Crozet Archipelago, consists of volcanic units erupted mainly between ~5 and 0.5 Ma. A paleomagnetic sampling was carried out along several sections distributed near the northern, eastern, and southeastern ...
Camps, Pierre, Pierre Camps, Bernard Henry, Michel Prévot, Henry, Bernard, Liliane Faynot, Faynot, Liliane, Prevot, Michel   +7 more
core   +1 more source

Very high resolution paleosecular variation record for the last ∼ 1200 years from the Aral Sea

, 2020
A record of geomagnetic paleosecular variation (PSV) spanning the last ∼1200 years has been obtained from two lacustrine sediment cores from the north part of Aral Sea (Kazakhstan). Magnetic susceptibility and NRM intensity have been used for correlating
Bonani G., Hajdas I., Borisov A., Iassonov P., Heller F., Oberhänsli H., Nourgaliev D.   +6 more
core  

Paleosecular variation and absolute geomagnetic paleointensity records retrieved from the Early Cretaceous Posadas Formation (Misiones, Argentina) [PDF]

, 2011
The Early Cretaceous may be considered a key period for understanding the evolution of the Earth's magnetic field. Some still unsolved problems are related to the mode of paleosecular variation (PSV) of the Earth's magnetic field before and during the ...
Vilas, Juan Francisco A., Juan Francisco Vilas, Solano, Miguel Cervantes, Mena, Mabel, Goguitchaichvili, Avto, Miguel Cervantes Solano, Mabel Mena, Avto Goguitchaichvili   +7 more
core   +1 more source

New Insights Into the Proposed Geomagnetic Excursion Hilina Pali From High‐Resolution Lake Sediment Cores From the Polar Ural Mountains, Arctic Russia

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 11, November 2025.
Abstract This study presents paleomagnetic records from three 24 m‐long sediment cores from the neighboring lakes Bolshoye Shchuch'ye and Maloye Shchuch'ye, located about 10 km apart in the Polar Urals in northern Russia. The age model, based on radiocarbon dating and varve counting, shows that the sediment sequences reach back up to about 23.5 ka cal.
S. Scheidt, S. Ólafsdóttir, J. Brendryen, N. R. Nowaczyk, M. M. Lenz, J. I. Svendsen, H. Haflidason   +6 more
wiley   +1 more source

Global relative paleointensity and regional paleosecular variation: High resolution signals in New Zealand marine sediments [PDF]

, 2015
Advancement in understanding paleosecular variation and its driving mechanisms is hindered by the current paucity of paleomagnetic records from the Southern Hemisphere.
Robbins, Jessie Louise
core   +1 more source

Paleomagnetic constraint of the age and duration of the Taupō Eruption, New Zealand

Earth, Planets and Space, 2023
We have carried out paleomagnetic analyses of tephras from the Taupō eruption, one of the most violent eruptions on Earth in the past 5000 years. Pyroclastic deposits were collected with 7 cm3 cubes pushed into each unit of the Taupō eruption sequence ...
Takeshi Hasegawa, Annika Greve, Darren M. Gravley, Chie Kusu, Yasuaki Kaneda, Shohei Shibata, Makoto Okada, Szabolcs Kósik, Nobutatsu Mochizuki, Gillian Turner   +9 more
doaj   +1 more source

Bending the Sierra Madre Oriental: A Paleocene Orocline

Tectonics, Volume 44, Issue 11, November 2025.
Abstract The Sierra Madre Oriental belt of the Mexican thin‐skinned fold‐and‐thrust belt, which formed during the Late Cretaceous due to the subduction of the Farallon Plate beneath North America, exhibits a pronounced curvature of approximately 100°, concave to the southwest.
Rafael Guerra Roel, Gabriel Chávez‐Cabello, José Jorge Aranda Gómez, Mark J. Dekkers, Gerardo Patiño Méndez, Daniel Pastor‐Galán   +5 more
wiley   +1 more source