Results 51 to 60 of about 49,268 (212)

Tellurium, magmatic fluids and orogenic gold: An early magmatic fluid pulse at Cononish gold deposit, Scotland [PDF]

Ore Geology Reviews, 2018
Significant tellurium enrichment occurs in many orogenic gold deposits but the factors causing this are little understood; some authors suggest this demands a magmatic input whereas others suggest it need not. Fractionation of Te from Se and S could offer insight into source/pathway processes of auriferous fluids.
Spence-Jones, CP, Jenkin, GRT, Boyce, AJ, Hill, NJ, Sangster, CJS   +4 more
openaire   +4 more sources

Diachronous post-orogenic magmatism within a developing orocline in Iberia, European Variscides [PDF]

, 2011
U-Pb (zircon) crystallization ages of 52 late-Variscan granitoid intrusions from NW Iberia (19 from new data, 33 from previous studies) constrain the lithospheric evolution of this realm of the Variscan belt of Western Europe and allow assessment of the ...
Gutiérrez-Alonso, G., Javier Fernández-Suárez, Gonzalo, J. Carlos, Pastor-Galán, Daniel, Gabriel Gutiérrez-Alonso, J. Carlos Gonzalo, J. Brendan Murphy, Jeffries, T. E., Stephen T. Johnston, Franco, M. Piedad, Fernández-Suárez, Javier, Murphy, J. Brendan, Daniel Pastor-Galán, M. Piedad Franco, Johnston, Stephen T., Teresa E. Jeffries, Jeffries, Teresa E., Fernández Suárez, Javier, Gutiérrez Alonso, Gabriel   +18 more
core   +3 more sources

Transition from orogenic-like to anorogenic magmatism in the Southern Alps during the Early Mesozoic: Evidence from elemental and Nd-Sr-Hf-Pb isotope geochemistry of alkali-rich dykes from the Finero Phlogopite Peridotite, Ivrea–Verbano Zone [PDF]

The Ivrea-Verbano Zone (IVZ) in the westernmost sector of the Southern Alps is an iconic upper mantle to lower continental crust sequence of the Adriatic Plate and provides a geological window into the tectono-magmatic events that occurred at the ...
Ogunyele, Abimbola C., Giovanardi, Tommaso, Mazzucchelli, Maurizio, Salters, Vincent J. M., Decarlis, Alessandro, Zanetti, Alberto, Sanfilippo, Alessio, Bonazzi, Mattia, Giovanardi T., Sanfilippo A., Mazzucchelli M., Bonazzi M., Ogunyele A. C., Zanetti A., Decarlis A., Salters V. J. M.   +15 more
core   +1 more source

The Cordon del Portillo Permian magmatism, Mendoza, Argentina, plutonic and volcanic sequences at the western margin of Gondwana [PDF]

, 2013
The Cerro Punta Blanca, Cerro Bayo and Cerro Punta Negra stocks, parts of the Cordillera Frontal Composite Batholith, cropping out in the Cordón del Portillo, records the Gondwana magmatic development of the Cordillera Frontal of Mendoza, in western ...
Benedini, Leonardo, Gregori, Daniel Alfredo   +1 more
core   +1 more source

Geodynamic Significance of Intraplate Basaltic Magmatism From the Western Mediterranean Region

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Dynamic topography changes as mantle convection evolves, making its past surface expression difficult to reconstruct. Widespread Neogene‐Quaternary intraplate basaltic magmatism across the Western Mediterranean Region allows us to test whether dated basalts preserve the mantle thermal structure responsible for regional dynamic support.
Chia‐Yu Tien, Nicky White, Megan Holdt, John Maclennan, Benedict Conway‐Jones   +4 more
wiley   +1 more source

On the crystallization conditions of the Neoproterozoic, high-K calc-alkaline, Bragança Paulista-type magmatism, southern Brasília Orogen, SE Brazil

Brazilian Journal of Geology
: Syn-orogenic Neoproterozoic granitic magmatism (ca. 630-600 Ma) in southern Brasília Orogen includes large batholiths of compositionally expanded high-K calc-alkaline granites (lato sensu) and small occurrences constituted by anatetic leuco-granites ...
Andrés Fabián Salazar-Naranjo, Silvio Roberto Farias Vlach   +1 more
doaj   +1 more source

The Borrachudos Granitic Suite: Paleo- to Mesoproterozoic A-type Magmatism in the Southeastern São Francisco Craton (SE Brazil) [PDF]

Anais da Academia Brasileira de Ciências
The Borrachudos Granitic Suite (BGS) comprises an acid magmatism that occurred in the west edge of Araçuaí orogen (Late Neoproterozoic), southeastern Brazil.
IVO ANTONIO DUSSIN, MARIO LUIZ S.C. CHAVES, TANIA MARA DUSSIN, PHILLIPPE ROSSI, JACQUES CHARVET   +4 more
doaj   +1 more source

Paleomagnetism of the Scourie Dykes, Lewisian Foreland, NW Scotland: Constraints on Early Paleoproterozoic Paleogeography of Kenorland

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.
Abstract The Scourie dyke swarm in the Lewisian foreland of northwest Scotland provides key constraints on the Paleoproterozoic evolution of the North Atlantic craton. High‐precision U‐Pb geochronology identifies two distinct intrusive phases at ∼2.41–2.38 Ga and ∼2.00 Ga.
M. Mirzaei, V. A. Kravchinsky, F. Alizadeh, L. Heaman, A. Goguitchaichvili   +4 more
wiley   +1 more source

Continental extension of northern Gondwana margin in the Eastern Himalaya: Constraints from geochemistry and U–Pb zircon ages of mafic intrusives in the Siang window, Arunachal Himalaya, India

Comptes Rendus. Géoscience, 2020
We report new U–Pb zircon age and whole-rock geochemical data from the Pangin mafic intrusive rocks of the Siang window, eastern Himalayas. These mafic rocks are medium to coarse-grained gabbros, consisting mainly of plagioclase and clinopyroxene with ...
Oinam, Govind, Singh, A. Krishnakanta, Joshi, Mallickarjun, Dutt, Amrita, Singh, M. Rajanikanta, Singh, N. Lakhan, Singh, R. K. Bikramaditya   +6 more
doaj   +1 more source

Full‐Waveform Seismic Tomography of the Upper Mantle Beneath the Arabia‐Eurasia Collision Zone

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.
Abstract Despite being one of the most recent major orogenic events, the timing of the Arabia‐Eurasia collision is still debated. Much of the discrepancy arises due to uncertainties over the amount of continental subduction of the Arabian passive margin and the timing of a hard collision of cratonic Arabian lithosphere with Eurasia.
Edward J. Clennett, Chujie Liu, Stephen P. Grand, Thorsten W. Becker   +3 more
wiley   +1 more source