Results 81 to 90 of about 120,010 (213)

Inferring Io's Internal Properties by Combining Gravity Measurements and Volcanic Activity

Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.
Abstract With its extreme geological activity, Io represents an archetype for tidally heated exoplanets/moons and provides insight into early stages of terrestrial planet evolution. Decades of ground‐based observations and multiple space missions have refined our understanding of Io, yet it remains debated where inside Io the tidal heating takes place.
A. Veenstra, M. Rovira‐Navarro, W. van der Wal   +2 more
wiley   +1 more source

Long‐Lived Source Heterogeneities in the Galapagos Mantle Plume

Geochemistry, Geophysics, Geosystems, 2018
Mantle plume‐derived melts provide a unique glimpse into the chemical heterogeneity of the deep mantle. However, the exact processes involved in forming and sampling lower mantle heterogeneities remain unresolved and thus, require further investigation ...
Esteban Gazel, Jarek Trela, Michael Bizimis, Alexander Sobolev, Valentina Batanova, Cornelia Class, Brian Jicha   +6 more
doaj   +1 more source

Evaluating Forced Versus Plume‐Induced Subduction Initiation for the Talkeetna‐Bonanza Arc System: Implications for Permo‐Triassic Paleogeography of the North American Cordillera

Tectonics, Volume 45, Issue 9, September 2026.
Abstract The mechanisms by which new subduction zones form remain highly debated. Here we use Permo‐Triassic strata to evaluate potential mechanisms for initiation of the Talkeetna‐Bonanza Arc of the northern North American Cordillera. New mapping and analysis of Permian and Upper Triassic strata on the Alaska Peninsula suggest a period of uplift ...
Brandon M. Keough, Michael P. Eddy, Kenneth D. Ridgway   +2 more
wiley   +1 more source

Atlas of the underworld: Slab remnants in the mantle, their sinking history, and a new outlook on lower mantle viscosity [PDF]

, 2018
Across the entire mantle we interpret 94 positive seismic wave-speed anomalies as subducted lithosphere and associate these slabs with their geological record.
Mantle dynamics & theoretical geophysics, Spakman, Wim, van der Meer, Douwe G., van Hinsbergen, Douwe J.J.   +3 more
core   +1 more source

Variations in Hawaiian Plume Flux Controlled by Ancient Mantle Depletion

AGU Advances
Mantle plumes—upwellings of buoyant rock in Earth's mantle—feed hotspot volcanoes such as Hawai‘i. The size of volcanoes along the Hawai‘i–Emperor chain, and thus the magma flux of the Hawaiian plume, has varied over the past 85 million years.
Paul Béguelin, Andreas Stracke, Maxim D. Ballmer, Shichun Huang, Michael Willig, Michael Bizimis   +5 more
doaj   +1 more source

Tomographic consistency in imaging lower-mantle plumes and their link to European Cenozoic Rift Volcanism

Earth and Planetary Physics
A wide northeast-trending belt of intraplate alkaline volcanism, exhibiting similar geochemical characteristics, stretches from the Eastern Atlantic Ocean to the Cenozoic rift system in Europe.
Chiara Civiero, Angelo De Min
doaj   +1 more source

Sources and possible causes of Paleoproterozoic magmatism in the southern part of the Karelian Craton (Baltic Shield)

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2018
There is an opinion that Paleoproterozoic magmatism in the Karelian craton of the Baltic Shield is linked solely with the influence of mantle plumes.
Наталья Ивановна Кондрашова, Natalia Kondrashova   +1 more
doaj   +1 more source

The company you keep: becoming one(self) in an Indonesian convent En bonne compagnie : devenir (quelqu’)un dans un couvent indonésien Pergaulan dalam biara di Indonesia: sebuah proses pembentukan diri*

Journal of the Royal Anthropological Institute, Volume 32, Issue 3, Page 927-945, September 2026.
This article investigates companionate processes of self‐making in a religious community of Catholic nuns in eastern Indonesia. I argue that the sociality of the convent establishes a unique context for understanding the effects of one's company on processes of self‐becoming.
Meghan Rose Donnelly
wiley   +1 more source

The composition of mantle plumes and the deep Earth [PDF]

, 2016
Highlights • Mantle plumes have broadly distinctive depleted and enriched compositions. • The Earth's lower mantle has a non-chondritic composition. • The deep mantle has large planetary-scale geochemical heterogeneity.
Hastie, Alan, Fitton, John, Hoernle, Kaj, Hastie, Alan R., Kerr, Andrew C., Fitton, J. Godfrey, Schwindrofska, Antje, Kerr, Andrew, McDonald, Iain   +8 more
core   +1 more source

Modeling Anisotropic Signature of Slab‐Induced Mantle Plumes From Thermochemical Piles in the Lowermost Mantle

Geophysical Research Letters
Seismic anisotropy, observed in the lowermost mantle near Large Low‐Shear‐Velocity Provinces (LLSVPs), is likely caused by strong deformation from mantle flow interacting with these regions and/or plume formation.
Poulami Roy, Bernhard Steinberger, Manuele Faccenda, Michaël Pons   +3 more
doaj   +1 more source