Results 61 to 70 of about 41,907 (309)

The capacity of hydrous fluids to transport and fractionate incompatible elements and metals within the Earth's mantle

Geochemistry, Geophysics, Geosystems, 2014
Both silicate melts and aqueous fluids are thought to play critical roles in the chemical differentiation of the Earth's crust and mantle. Yet their relative effects are poorly constrained. We have addressed this issue by measuring partition coefficients
John Adam, Marek Locmelis, Juan Carlos Afonso, Tracy Rushmer, Marco L. Fiorentini   +4 more
doaj   +1 more source

Gravimetric structure for the abyssal mantle massif of Saint Peter and Saint Paul peridotite ridge, Equatorial Atlantic Ocean, and its relation to active uplift

Anais da Academia Brasileira de Ciências, 2014
This paper presents gravimetric and morphologic analyses based on the satellite-derived data set of EGM2008 and TOPEX for the area of the oceanic mantle massif of the Saint Peter and Saint Paul peridotite ridge, Equatorial Atlantic Ocean.
KENJI F. MOTOKI, AKIHISA MOTOKI, SUSANNA E. SICHEL   +2 more
doaj   +1 more source

Mesozoic-Cenozoic mafic magmatism in Sanandaj-Sirjan Zone, Zagros Orogen (Western Iran): geochemical and isotopic inferences from Middle Jurassic and Late Eocene gabbros [PDF]

, 2017
One of the consequences of Neo-Tethys ocean subduction beneath the Central Iranian Micro-continent (CIMC) is the development of rare gabbroic intrusions in the Malayer-Boroujerd Plutonic Complex (MBPC) located in the Sanandaj-Sirjan Zone (SaSZ) of the ...
Deevsalar, Reza, Ghaderi, Majid, Hoskin, P.W.O., Lee, Hao Yang, Murata, Mamoru, Neill, Iain, Oshiro, Shoma, Shinjo, Ryuichi, Wang, Kuo-Lung   +8 more
core   +1 more source

Reactive Transport Modeling in Porous Fractured Media: Application to Weathering Processes

Water Resources Research
Complex permeability distribution is frequently encountered in weathered rocks with inherited heterogeneities, such as networks of discontinuities that impact fluid flow and water‐rock interactions.
Sylvain Favier, Yoram Teitler, Fabrice Golfier, Michel Cathelineau   +3 more
doaj   +1 more source

GEOCHEMISTRY AND PETROGRAPHY OF METAMORPHIC SOLE AMPHIBOLITES FROM THE SLATINA QUARRY, MT. ZRINSKA GORA, CROATIA

Rudarsko-geološko-naftni Zbornik
The investigated Mt. Zrinska Gora amphibolites are a part of the metamorphic sole of the Banovina ophiolite complex. Mineral composition and other petrographic characteristics of amphibolites and adjacent peridotite were investigated by polarised ...
Marija Putak Juriček, Vesnica Garašić
doaj   +1 more source

Origin of Pyroxenite-Peridotite Veined Mantle by Refertilization Reactions: Evidence from the Ronda Peridotite (Southern Spain) [PDF]

Journal of Petrology, 2008
The Ronda orogenic peridotite (southern Spain) contains a variety of pyroxene-rich rocks ranging from high-pressure garnet granulites and pyroxenites to low-pressure plagioclase–spinel websterites. The ‘asthenospherized’ part of the Ronda peridotite contains abundant layered websterites (‘group C’ pyroxenites), without significant deformation, that ...
Bodinier, Jean-Louis, Garrido, C. J., Chanefo, I., Bruguier, Olivier, Gervilla, F.   +4 more
openaire   +3 more sources

Lithospheric Delamination Below the North American Midcontinent Ceased Subsidence in Cratonic Basins

AGU Advances, Volume 7, Issue 1, February 2026.
Abstract Cratonic lithospheres carry a long history of tectonic modifications that result in heterogeneous structures, as revealed by an increasing number of geophysical observations. The existence of cratonic basins indicates protracted periods of tectonic modification, causing subsidence within global continental interiors.
Xiaotao Yang, Lihang Peng, Andrea Stevens Goddard, Lijun Liu   +3 more
wiley   +1 more source

Evidence of ghost plagioclase signature induced by kinetic fractionation of europium in the Earth’s mantle

Nature Communications, 2023
Researchers found natural evidence of kinetic Eu anomalies caused by melt-induced diffusion in mantle peridotite clinopyroxene, providing an alternative to crustal recycling for the enigmatic ghost plagioclase signatures in oceanic basalts.
Romain Tilhac, Károly Hidas, Beñat Oliveira, Carlos J. Garrido   +3 more
doaj   +1 more source

Seismic constraints on the three-dimensional geometry of low-angle intracrustal reflectors in the Southern Iberia Abyssal Plain

, 2008
Several lines of evidence suggest that simple shear rifting of the continental crust, in the formof low-angle detachment faulting, occurred during the final stages of continental breakupbetween West Iberia and the Grand Banks.
Dean, S.M., Minshull, T.A., Whitmarsh, R.B.   +2 more
core   +1 more source

Slab‐Mantle Interaction During Subduction Initiation: Constraints From Trace Element and Sr‐Nd‐Pb Isotope Systematics of Boninite and Other Magmas and Metamorphic Sole in the Oman Ophiolite

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 2, February 2026.
Abstract The Late Cretaceous Oman ophiolite includes a series of volcanic rocks generated during the transition from spreading ridge to protoarc associated with subduction initiation. We analyzed major and trace elements and Sr, Nd, and Pb isotope compositions of lavas and dikes of the protoarc stage, especially boninites. We also analyzed amphibolites
Tsuyoshi Ishikawa, Kazuya Nagaishi, Kyoko Kanayama, Keitaro Kitamura, Shigeyuki Wakaki, Yuki Kusano, Susumu Umino   +6 more
wiley   +1 more source