Results 11 to 20 of about 411 (170)

Buoyant decompression melting: A possible mechanism for intraplate volcanism [PDF]

open access: yesJournal of Geophysical Research: Solid Earth, 2002
Volcanic activity away from plate boundaries occurs in a variety of settings. Linear, age‐progressive volcanic chains have been explained as the manifestation of fixed hot spots, possibly generated by plumes originating deep in the mantle. However, important examples of oceanic intraplate volcanism cannot be explained in this way, including short‐lived
M. Jordan Raddick   +2 more
openaire   +3 more sources

The Warnie volcanic province: Jurassic intraplate volcanism in Central Australia [PDF]

open access: yesGondwana Research, 2019
Abstract The Cooper and Eromanga Basins of South Australia and Queensland are the largest onshore hydrocarbon producing region in Australia. Igneous rocks have been documented infrequently within end of well reports over the past 34 years, with a late Triassic to Jurassic age determined from well data.
Hardman, Jonathon P.A.   +4 more
openaire   +2 more sources

The Atlas of Morocco: A Plume‐Assisted Orogeny

open access: yesGeochemistry, Geophysics, Geosystems, 2023
We explore the connections between crustal shortening, volcanism, and mantle dynamics in the Atlas of Morocco. In response to compressional forces and strain localization, this intraplate orogen has evolved far from convergent plate margins.
R. Lanari   +9 more
doaj   +1 more source

Hafnium isotopic variations in East Atlantic intraplate volcanism [PDF]

open access: yesContributions to Mineralogy and Petrology, 2010
The broad belt of intraplate volcanism in the East Atlantic between 25° and 37° N is proposed to have formed by two adjacent hotspot tracks (the Madeira and Canary tracks) that possess systematically different isotopic signatures reflecting different mantle source compositions.
Geldmacher, Jörg   +6 more
openaire   +4 more sources

THE BOOK BY G.R. FOULGER: FROM MELTING ANOMALIES TO HYPOTHESES ON PLATES OR PLUMES?

open access: yesГеодинамика и тектонофизика, 2015
The book «Plates vs. plumes: a geological controversy» (Fig. 1) is intended for the advanced student who is not satisfied by the presentday interpretation of intraplate volcanism.
Sergei V. Rasskazov
doaj   +1 more source

A Plate‐Mantle Convection System in the West Pacific Revealed by Tertiary Ultramafic‐Mafic Volcanic Rocks in Southeast China

open access: yesEarth and Space Science, 2021
Cenozoic volcanic rocks in the East Asian continental margin usually form because of asthenosphere upwelling and resultant decompression melting, and their origins are important in deciphering mantle geodynamics attributed to intraplate volcanism.
Fa‐Bin Pan   +4 more
doaj   +1 more source

Asthenospheric Flow From East Asia to the Philippine Sea Plate Revealed by Rj‐MCMC Inversion of Surface Waves

open access: yesGeochemistry, Geophysics, Geosystems, 2022
The Pacific and Philippine Sea Plate subductions have resulted in and controlled the development of a typical trench‐arc‐back‐arc system in NE Asia since the Cenozoic.
Yanzhe Zhao, Zhen Guo, Yanbin Wang
doaj   +1 more source

Mexican Volcanic Belt: an intraplate transform?

open access: yesGeofísica Internacional, 1987
La evidencia temporal y "geométrica" sugiere que varios eventos regionales tectónicos fueron contribuyentes de mucha importancia durante la evolución del Cinturón Volcánico Mexicano (CVM). Estos incluyen (1) el desarrollo de una zona tectónica de debilidad en el área del actual CVM, seguido durante la época cenozoica por (2) actividad tectónica en la ...
S. E. Cebull, D. H. Shurbet
openaire   +3 more sources

The role of edge-driven convection in the generation of volcanism – Part 1: A 2D systematic study [PDF]

open access: yesSolid Earth, 2021
The origin of intraplate volcanism is not explained by plate tectonic theory, and several models have been put forward for explanation. One of these models involves edge-driven convection (EDC), in which cold and thick continental lithosphere is ...
A. Manjón-Cabeza Córdoba   +2 more
doaj   +1 more source

Dating volcanic materials through biochronostratigraphic methods applied to hosting strata (example from the Iberian Chain, eastern Spain)

open access: yesComptes Rendus. Géoscience, 2023
Volcaniclastic accumulations in shallow marine environments are prone to be eroded and transported by sedimentary agents and then resedimented either on contemporaneous or younger substrates. Therefore, dating of the volcanic events through the sediments
Cortés, José Emilio
doaj   +1 more source

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