Results 101 to 110 of about 3,139 (203)

LATE NEOPROTEROZOIC RARE-METAL LEUCOGRANITE FROM THE KHARIUSIKHA MASSIF OF YENISEI RIGDE: GENESIS AND RELATIONSHIP TO MAGMATISM OF A LARGE IGNEOUS PROVINCE

Геодинамика и тектонофизика
The paper deals with the petrogeochemical composition and U-Pb (SHRIMP-II) age (753±6 Ma) of subalkaline leucogranites and syenites from the Khariusikha massif of the Yenisei Ridge, which contain rare-metal mineralization.
A. D. Nozhkin, O. M. Turkina
doaj   +1 more source

Late orogenic carboniferous extensions in the Variscan French Massif Central

, 1995
International audienceThe Variscan French Massif Central experienced two successive stages of extension from Middle Carboniferous to Early Permian. In the northern Massif Central, the first stage began in the late Visean, immediately after nappe stacking,
Alabouvette, Arthaud, Audrain, Barbarin, Bayer, Becq-Giraudon, Bernard-Griffiths, Berthe, Berthier, Binon, Blès, Blès, Bogdanoff, Bonijoly, Bonnion, Bouchez, Boutin, Broutin, Brun, Burg, Burg, Burg, Caen-Vachette, Carmignani, Carpena, Cassard, Cheilletz, Costa, Couturié, De Waard, Demange, Deroin, Dewey, Dewey, Didier, Dumas, Dupraz, Duthou, Duthou, Duthou, Délénin, Echtler, Echtler, Fabre, Faure, Faure, Faure, Faure, Faure, Faure, Faure, Fayol, Feist, Feix, Fernandez, Feybessse, Feys, Floc'h, Forestier, Freytet, Gagny, Gapais, Gibbs, Gras, Grolier, Grolier, Gélard, Hamet, Hollinger, Hutton, Labernardière, Lafont, Lagarde, Lameyre, Lameyre, Ledru, Ledru, Ledru, Legrand, Leistel, Lerouge, Lespinasse, Malavieille, Malavieille, Maluski, Mattauer, Matte, Mollier, Mollier, Montel, Mouctar, Ménard, Paterson, Paterson, Petitpierre, Pin, Pons, Prager, Quenardel, Rey, Robert, Rolin, Santallier, Schuilling, Thompson, Turland, Vallé, Van den Driessche, Van den Driessche, Vasseur, Vetter, Vialette, Vigneresse, Vissers, Vivier   +114 more
core   +3 more sources

U-Pb zircon and monazite geochronology of Variscan magmatism related to syn-convergence extension in Central Northern Portugal [PDF]

, 2005
The Viseu area is located in the Central Iberian Zone of the Iberian Variscan Belt and hosts numerous post-thickening, collision-related granitoids intruded into upper and middle crustal levels.
Acciaioli, Azevedo, B. Valle Aguado, Behr, Behrmann, Black, Burg, Burg, Carrington da Costa, Chaminé, Dallmeyer, Davies, Dias, Díez Balda, Díez Balda, Escuder Viruete, Farias, Ferreira, Finger, Holdaway, Iglesias, J. Nolan, J.R. Martínez Catalán, Julivert, Krogh, Krogh, Luth, M.R. Azevedo, Noronha, Pinto, Priem, Rey, Ribeiro, Ribeiro, Rottura, Schaltegger, Schulmann, Stacey, Sylvester, Teixeira, Thirlwall, Thompson, U. Schaltegger, Valle Aguado, Valle Aguado, Watkins, Watkins, Wickham, Yardley, Ábalos   +49 more
core   +2 more sources

Magmatic surge requires two-stage model for the Laramide orogeny. [PDF]

Nat Commun, 2023
Schwartz JJ, Lackey JS, Miranda EA, Klepeis KA, Mora-Klepeis G, Robles F, Bixler JD.   +6 more
europepmc   +1 more source

Mantle and crustal sources in the genesis of late-hercynian granitoids (NW Portugal) : geochemical and Sr-Nd isotopic constraints [PDF]

, 2002
Large volumes of granitoids were emplaced in the Hercynian Central Iberian Zone during the last ductile deformation phase (D3, 300-320 Ma). The biotite-rich granitoids are the most abundant: (1) syn-D3 granodiorites-monzogranites (313-319 Ma) with calc ...
Allègre, Azevedo, Bea, Boher, Castro, Cocherie, Collins, Conrad, D'Lemos, De Paolo, Dias, Dias, Dias, Dias, Dias, Didier, Downes, Evensen, Ferreira, Ferreira, G. Dias, Galán, Gebauer, Gerdes, Holden, Holtz, J. Leterrier, Jacobsen, Janousek, Janousek, Jayananda, Johannes, La Roche, Leake, Liew, Macera, Martins, Menéndez, Michard, Moreno-Ventas, N. Ferreira, Nachit, P.P. Simões, Pagel, Pankhurst, Patiño Douce, Pearce, Peucat, Pin, Pupin, Pupin, Pupin, Pupin, Shaw, Silva, Turpin, Veloso, Vielzeuf, Villaseca, Villaseca, Wenzel   +60 more
core   +1 more source

Assessing environmental and radiological impacts and lithological mapping of beryl-bearing rocks in Egypt using high-resolution sentinel-2 remote sensing images. [PDF]

Sci Rep, 2023
Khaleal FM, El-Bialy MZ, Saleh GM, Lasheen ESR, Kamar MS, Omar MM, El-Dawy MN, Abdelaal A.   +7 more
europepmc   +1 more source

EARLY NEOPROTEROZOIC GRANITOIDS IN THE RYAZANOVSKY MASSIF OF THE YENISEI RIDGE AS INDICATORS OF THE GRENVILLE OROGENY AT THE WESTERN MARGIN OF THE SIBERIAN CRATON

Геодинамика и тектонофизика
Studies of the geological history of the Yenisei Ridge are important not only for understanding the tectonic evolution of mobile belts at the boundaries of ancient cratons but also for problem solving whether the Siberian craton was a part of the Rodinia
A. D. Nozhkin, O. M. Turkina, I. I. Likhanov, Yu. L. Ronkin   +3 more
doaj   +1 more source

"Geological Setting/Cadre Géologique" in English and French Petrology Articles: Muted Indications of Explored Places [PDF]

, 2000
There has been considerable interest over the past 15 years in the scientific research article, its schematic structure and how it responds to discourse community expectations.
Dressen-Hammouda, Dacia, M. Swales, John
core   +1 more source

Petrography and geochemistry of pegmatite and leucogranite of Ntega-Marangara area, Burundi, in relation to rare metal mineralisation

Open Geosciences
The Ntega-Marangara area, part of the Kanyaru supergroup, Western Domain of Karagwe Ankole Belt, hosts numerous pegmatite veins related to the leucogranite. This investigation aims to characterise the granitoids, their alteration products, and rare metal
Akabahinga Quesnay de Jésus, Bolarinwa Anthony Temidayo, Ntiharirizwa Seconde   +2 more
doaj   +1 more source

The Mata Azul pegmatitic field, Tocantins/Goiás, central Brazil: geology, genesis and mineralization

Brazilian Journal of Geology
: In Goiás and Tocantins States, Central Brazil, several granitic pegmatites were characterized and grouped for the first time. These pegmatites had been intensely explored by hand in the past, producing mainly gemstone varieties of tourmaline and beryl.
Hudson de Almeida Queiroz, Nilson Francisquini Botelho   +1 more
doaj   +1 more source