Results 31 to 40 of about 1,684 (203)

Noble Gases in Mantle Plumes

Science, 2001
Trieloff et al . ([1][1]) provided neon isotope data to argue that mantle neon originates as a trapped component in meteorites rather than having a pristine solar composition. That finding, if true, has important consequences for understanding the mechanism of volatile input into the mantle ...
Ballentine, C, Porcelli, D, Wieler, R
openaire   +3 more sources

Long‐Distance Asthenospheric Transport of Plume‐Influenced Mantle From Afar to Anatolia

Geochemistry, Geophysics, Geosystems, 2023
The origin of widespread volcanism far from plate boundaries and mantle plumes remains a fundamental unsolved question. An example of this puzzle is the Anatolian region, where abundant intraplate volcanism has occurred since 10 Ma, but a nearby ...
J. Hua, K. M. Fischer, E. Gazel, E. M. Parmentier, G. Hirth   +4 more
doaj   +1 more source

Mantle roots of the Emeishan plume: an evaluation based on teleseismic P-wave tomography [PDF]

Solid Earth, 2017
The voluminous magmatism associated with large igneous provinces (LIPs) is commonly correlated to upwelling plumes from the core–mantle boundary (CMB). Here we analyse seismic tomographic data from the Emeishan LIP in southwestern China.
C. He, M. Santosh, M. Santosh
doaj   +1 more source

Evidence From Microscopy and U–Pb Geochronology as a Clue to the Influence of the Cretaceous Magmatism in the Diagenesis of Pre‐Salt Carbonate Reservoirs in the Santos Basin (Brazil)

Geological Journal, EarlyView.
Carbonates from Santos Basin revealed U–Pb ages correlated with basalt ages (A), suggesting that they were formed during magmatic events. These events placed hot CO2 in the reservoir, which, when mixed with carbonate‐rich cold water (B), led to thermal convection, enabling the formation of the U contained in the carbonates.
Marco António Ruivo de Castro e Brito, Cristiano Leite Sombra, Davy Raeder Brandão, Cleverson Guizan Silva, Sidney Luiz de Matos Mello, Eugênio Vaz dos Santos Neto, Rui Jorge Fernandes Baptista, Ramsés Capilla, Luiz Antônio Pierantoni Gambôa   +8 more
wiley   +1 more source

Large volcanic eruptions are mostly sourced above mobile basal mantle structures

Communications Earth & Environment
Most deep mantle plumes rise from hot basal mantle structures, creating large volcanic eruptions at Earth’s surface. In previous studies, mantle plumes were the implicit process connecting volcanic eruptions to hot basal mantle structures.
Annalise Cucchiaro, Nicolas Flament, Maëlis Arnould, Noel Cressie   +3 more
doaj   +1 more source

Influence of mantle plume on continental rift evolution: A case study of the East African rift system

Petroleum Research
Mantle plume is an essential component of the mantle convection system, and its influence on the geodynamics of continental rifts is of great significance for understanding the crust–mantle interaction.
Haixuan Xu, Jianghai Li, Lijie Wang, Xiaoyu Zhang, Bo Feng   +4 more
doaj   +1 more source

Petrogenesis and tectonic significance of mafic–ultramafic rocks from Southwest Yunnan, China

Comptes Rendus. Géoscience, 2020
This study focuses on the mafic–ultramafic lavas of the Early Carboniferous outcrop in Mangxin, southwestern Yunnan, China. Picrites with 26–32 wt% MgO and a quenched texture are the most significant components of this rock association.
Shi, Qing, Fang, Nianqiao
doaj   +1 more source

Characterization of a Portable Computed Tomography System for In Situ Analysis of Wooden Sculptures in Cultural Heritage

X-Ray Spectrometry, EarlyView.
ABSTRACT Portable X‐ray computed tomography (portable CT) has become an important tool for the non‐destructive investigation of cultural heritage objects, particularly when in situ analysis is required. This work presents the experimental characterization and application of a transportable cone‐beam CT system designed for the inspection of large and ...
Anderson de Paula, Isis Franzi, Roberta Borges, Josiane Cavalcante, Olga Araujo, Alessandra Machado, Ricardo Tadeu Lopes, Davi Ferreira de Oliveira   +7 more
wiley   +1 more source

Corn syrup mantle plumes [PDF]

Proceedings of the National Academy of Sciences, 2014
In the dark, microscopic plastic beads in the 200-gallon tank of corn syrup glow and sparkle when light from a projector shines at them in geophysical fluid dynamicist Christopher Kincaid’s laboratory at the University of Rhode Island. Experiments with this goo could help explain whether columns of magma rising up from near the Earth’s core might ...
openaire   +2 more sources

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, EarlyView.
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