Results 91 to 100 of about 21,832 (251)
Slab Gap‐Related Intraplate Magmatism as a Proxy of Maximum Flat Slab Extent in Patagonia
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.Abstract Establishing the frontal extent of ancient flat subduction events from the geologic record can be challenging. This difficulty arises because magmatic activity in the arc typically ceases during complete slab flattening, and other meaningful proxies are usually absent. To address this issue, we examine early Paleocene intraplate magmatic units
C. R. Navarrete +3 more
wiley +1 more source
, 1995 This guide is designed to be used by teachers as an aid for teaching principles of fossils and past life to elementary school students. The activities and labs provided include topics such as fossilization, sedimentation, trace fossils, the importance of
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Модель генерации сейсмического электрического поля в атмосфере
Vestnik KRAUNC: Fiziko-Matematičeskie NaukiВ ряде публикаций, освещалось уникальное событие, произошедшее на Кавказе в период 01-02.09.2019. В нём, в районе Центрального Кавказа, в хорошую погоду, по вариациям вторичных частиц космических лучей, регистрируемых комплексной установкой «Ковёр» БНО ...
Хаердинов, Н.С.
doaj +1 more source
Tectonics, Volume 45, Issue 3, March 2026.Abstract We determine the first P‐wave azimuthal and radial anisotropy tomography beneath the Caribbean and its adjacent regions. The Cocos and Atlantic Plates are imaged as high‐velocity (high‐V) zones down to ∼1,600 km depth and they have subducted independently beneath the Caribbean Plate.
Qingyu Qiao +3 more
wiley +1 more source
Crustal deformation, the earthquake cycle, and models of viscoelastic flow in the asthenosphere [PDF]
The crustal deformation patterns associated with the earthquake cycle can depend strongly on the rheological properties of subcrustal material. Substantial deviations from the simple patterns for a uniformly elastic earth are expected when viscoelastic ...
Cohen, S. C., Kramer, M. J.
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Deep lithospheric dynamics beneath the Sierra Nevada during the Mesozoic and Cenozoic as inferred from xenolith petrology [PDF]
, 2001 Peridotite xenoliths erupted in late Miocene basalts (~8 Ma) in the central Sierra Nevada sample a lithosphere that is vertically stratified in terms of age and thermal history.
Brimhall, George H., Jr. +2 more
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Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.Abstract The formation of wide, magma‐starved continent–ocean transition (COT) zones remains incompletely understood. We use 2‐D thermo‐mechanical numerical experiments, coupling hydrous mantle melting with parameterized crustal accretion, to explore controls on magmatic lag: the delay between continental crustal break‐up and steady oceanic crustal ...
Yuan Wang, Zhonglan Liu
wiley +1 more source
The Role of Volatiles in Reactive Melt Transport in the Asthenosphere [PDF]
, 2015 Experimental studies of mantle petrology find that small concentrations of water and carbon dioxide have a large effect on the solidus temperature and distribution of melting in the upper mantle.
T. Keller, R. Katz
semanticscholar +1 more source
New Insights Into the Cooling of the Oceanic Lithosphere From Surface‐Wave Tomographic Inferences
Geophysical Research Letters, Volume 53, Issue 4, 28 February 2026.Abstract How oceanic plates cool and thicken with age remains a subject to debate, with several thermal models supported by apparently contradictory data. Combining a novel imaging technique that balances resolution and uncertainty with finite‐frequency surface‐wave measurements, we build tomographic model SS3DPacific to revisit the cooling style of ...
Franck Latallerie +5 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, 2020 Long‐period magnetotelluric (MT) data can be used to interpret upper mantle temperature, hydrogen content, and the presence of partial melt, all of which strongly influence mantle viscosity. We have collected the first long‐period MT data in Svalbard and
Kate Selway +7 more
doaj +1 more source