Results 71 to 80 of about 220,175 (263)

A Gravity Study of the Crustal Structure Beneath the Young Amagmatic Rukwa‐Tanganyika Rift Zone

Tectonics, Volume 44, Issue 8, August 2025.
Abstract The Rukwa‐Tanganyika Rift Zone (RTRZ), experiencing multiphase rifting, forms the nonvolcanic southern part of the Western Branch of the East African Rift. We investigate the crustal structure beneath the RTRZ to understand how strain migrates beneath multiphase rifts.
Emmanuel A. Njinju, Estella A. Atekwana
wiley   +1 more source

An atlas of apatite and merrillite in martian meteorites: REE Geochemistry and a new tool for shergottite classification

Meteoritics &Planetary Science, Volume 60, Issue 8, Page 1894-1920, August 2025.
Abstract The phosphates, apatite and merrillite, are accessory phases in all martian meteorites. Although apatite is commonly used to assess volatile content and speciation in martian meteorites, merrillite is at least twice as abundant in most samples, but poorly understood. Given that shergottites are divided into enriched, intermediate, and depleted
Tahnee Burke, Andrew G. Tomkins, Zsanett Pinter, Andrew D. Langendam, Laura A. Miller   +4 more
wiley   +1 more source

About interrelation of structure of an anomalous geochemical field with the mechanism of formation of hydrothermal system [PDF]

, 2006
The model of formation of anomalous structures of geochemical fields during formation of thermo-fluidic ore-forming system is proposed. The morphology of these fields is caused by the combination of diverged mineral zonation in relation to a power source
Voroshilov, V. G.
core   +2 more sources

Multi-Scale Geophysics and Chemistry-Based Investigation of Alteration Evolution Mechanisms in Buried Hills of the Northern South China Sea

Journal of Marine Science and Engineering
Alteration is a common metamorphic process in igneous formations and recorded geological information in different times and spaces. Owing to its unique location, the igneous rocks of the buried hills in the northern South China Sea exhibit complex ...
Xinru Wang, Baozhi Pan, Yuhang Guo, Julin Zhang, Xun Yu, Pengji Zhang   +5 more
doaj   +1 more source

Protoliths and phase petrology of whiteschists [PDF]

, 2018
Whiteschists appear in numerous high- and ultrahigh-pressure rock suites and are characterized by the mineral assemblage kyanite+talc (+-quartz or coesite).
de Capitani, Christian, Franz, Leander, Romer, Rolf   +2 more
core  

Oxide Gabbros: Transformation From Oceanic Ridge‐Transform Systems to Subduction

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 7, July 2025.
Abstract Fluid composition and fluxes in subduction zones are primarily governed by the nature and degree of hydrothermal alteration of the subducting oceanic lithosphere. However, spatial and temporal heterogeneities inherited from mid‐ocean ridge and oceanic transform fault (OTF) systems introduce significant uncertainties in constraining these fluid
Thomas Gyomlai, Cécile Prigent, Sampriti Mukherjee, Alexandre Janin, Mathilde Cannat, Saskia Erdmann   +5 more
wiley   +1 more source

The importance of talc and chlorite "hybrid” rocks for volatile recycling through subduction zones; evidence from the high-pressure subduction mélange of New Caledonia [PDF]

, 2018
The transfer of fluid and trace elements from the slab to the mantle wedge cannot be adequately explained by simple models of slab devolatilization. The eclogite-facies mélange belt of northern New Caledonia represents previously subducted oceanic crust ...
Arculus, Richard, Faure, Kevin, Hermann, Jörg, Mavrogenes, John, Spandler, Carl   +4 more
core  

Metasomatism and Melting of Cordilleran Lithosphere Resulting From Sediment Relamination During Shallow Subduction

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 7, July 2025.
Abstract Mantle xenoliths recovered from the modern backarc region of the northern Altiplano Plateau record metasomatism by slab‐derived silicic melts, and a suite of Quaternary volcanics suggest that melting of accreted crustal material has persisted since shallow subduction in the Oligocene.
C. D. Hiett, D. L. Newell, J. W. Shervais   +2 more
wiley   +1 more source

Contact Metamorphism in Southern California [PDF]

, 1954
A highly condensed introduction to "Contact metamorphism in southern California" is obviously not the place in which to indulge in semantic niceties nor to engage in terminological tussles, and thus the title is not intended to reflect a carefully ...
Campbell, Ian
core  

The structure and petrology of the Cnoc nan Cuilean Intrusion, Loch Loyal Syenite Complex, NW Scotland [PDF]

, 2013
In NW Scotland, several alkaline intrusive complexes of Silurian age intrude the Caledonian orogenic front. The most northerly is the Loch Loyal Syenite Complex, which is divided into three separate intrusions (Ben Loyal, Beinn Stumanadh and Cnoc nan ...
Goodenough, Kathryn M., Gunn, A. Gus, Hughes, Hannah S.R., Lacinska, Alicja, McCormac, Michael, Walters, Abigail S.   +5 more
core   +3 more sources