Results 51 to 60 of about 537 (93)

Critical Zone weathering controls on the hydrogeochemistry and spatial variability of groundwater arsenic and fluoride in the Lake Victoria Basin, Northwest Tanzania

Journal of Environmental Science, Health & Sustainability
Arsenic (As) and fluoride (F⁻) in groundwater limit access to safe drinking water across East Africa, yet process-based understanding of their co-occurrence in Precambrian basement aquifers of northern Tanzania remains limited.
Fanuel Ligate, Julian Ijumulana, Regina Irunde, Vivian Kimambo, Rajabu Hamisi, Jyoti Prakash Maity, Joseph Mtamba, Felix Mtalo, Prosun Bhattacharya   +8 more
doaj   +1 more source

Post‐Collisional Evolution in the Southern Variscan Belt: Insights From Numerical Modeling of the Valpelline Series (Western Alps)

Tectonics, Volume 45, Issue 8, August 2026.
Abstract The post‐collisional evolution of orogenic belts is commonly marked by high‐temperature metamorphism and widespread magmatism, yet the processes linking collision to post‐collisional dynamics remain difficult to reconstruct due to limited exposure of deep‐crustal levels and uncertainties in the determination of pressure‐temperature conditions ...
Alessandro Regorda, Marco Filippi, Manuel Roda, Fabiola Caso, Federico Farina, Chiara Benedetta Piloni, Michele Zucali   +6 more
wiley   +1 more source

Lithology of recycled sediments controls metasomatism in the lithospheric mantle:Examples from Italian ultrapotassic volcanics

Mafic ultrapotassic rocks from central Italy exhibit enrichment in mantle incompatible trace elements, continental crust-like Sr-Nd-Pb isotope ratios, and elevated δ18O values - signatures that point to metasomatism of their mantle source by crust ...
Tonboe, Emil Akseli Koskinen, Waight, Tod Earle, Holm, Paul Martin   +2 more
core   +1 more source

Hybridization Melting Between Continent‐Derived Sediment and Depleted Peridotite in Subduction Zones

, 2018
To better constrain the processes by which subducted continent-derived sediment and the overlying mantle wedge react to produce hybrid magmas, we have performed a series of high-pressure interaction experiments involving a phyllitic metasediment and a ...
Foley, Stephen F., Wang, Yu, Yu Wang, Stephen F. Foley   +3 more
core   +1 more source

Metamorphic study of metasediment from the Kangilinaaq Peninsula, West Greenland

, 2005
The Nagssugtoqidian Orogen is represented by an approximately 300 km wide Palaeoproterozoic deformation and metamorphic belt that stretch through the southern and middle parts of west Greenland.
Åberg, Lina
core  

Geochemistry of high-temperature granulitic supracrustals from Rogaland, SW Norway [PDF]

, 1990
Were the granulite-facies metamorphic supracrustals of the Faurefjell Metasediment Formation in Rogaland, SW Norway, chemically open or closed systems?
Petrology, Bol, L.C.G.M., IVAU: Instituut voor Aardwetenschappen Utrecht   +2 more
core   +1 more source

SHRIMP U-Pb zircon dating of the host rocks of the Cannington Ag-Pb-Zn deposit, southeastern Mt Isa Block, Australia

, 2003
Copyright © 2003 Taylor and FrancisSHRIMP U-Pb zircon ages are reported from a paragneiss, a pegmatite, a metasomatised metasediment and an amphibolite taken from the upper amphibolite facies host sequence of the Cannington Ag-Pb-Zn deposit at the ...
Nutman, A., Giles, D, Giles, D., Nutman, Allen   +3 more
core   +1 more source

Detrital Zircon U-Pb Geochronology and Lu-Hf Isotopic Compositions of the Wuliangshan Metasediment Rocks in SW Yunnan (China) and Its Provenance Implications

, 2016
The Wuliangshan Group occurs to the east of the Lancang giant igneous zone in SW Yunnan, and is mainly composed of low-grade metamorphosed sedimentary rocks.
Zhang, Yuzhi, Wang, Yuejun, Xing, Xiaowan   +2 more
core   +1 more source

Volcanismo de sin-rift de la Cuenca Neuquina, Argentina: relación con la evolución Triásico Tardía-Jurásico Temprano del margen Andino Syn-rift volcanism of the Neuquén Basin, Argentina: relationships with the Late Triassic-Early Jurassic evolution of the Andean margin

Andean Geology, 2012
La Cuenca Neuquina constituye uno de los rasgos más conspicuos desarrollados durante el Mesozoico en el margen Andino de Gondwana. El relleno de sin-rift inicial (Triásico Superior-Jurásico Inferior) de esta cuenca extensional ensiálica estuvo ...
Leandro D'Elia, Martin Muravchik, Juan R Franzese, Andrés Bilmes   +3 more
doaj  

La geochimica del granato nelle granatiti della Val Fiorina (Val Grande, Ivrea-Verbano).

, 1996
In this note we consider the relationship between gabbroic sills and metasediment in a peculiar area of the Ivrea Zone, Val Fiorina, where the dominant rock type is garnetite (modal garnet > 60%).
MAZZUCCHELLI, Maurizio, BARBIERI M. A
core