Results 11 to 20 of about 1,193 (219)

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   +2 more sources

Evidence for present-day leucogranite pluton growth in Tibet [PDF]

Geology, 2004
Several geophysical surveys carried out in southern Tibet have revealed the occurrences of bright spots of high electrical conductivity at 15–20 km depth, corresponding to zones of seismic attenuation and correlated to high heat flow at the surface.
Gaillard, Fabrice, Scaillet, Bruno, Pichavant, Michel   +2 more
openaire   +2 more sources

Sr-Nd-Hf Isotopic Disequilibrium During the Partial Melting of Metasediments: Insight From Himalayan Leucosome

Frontiers in Earth Science, 2022
Radiogenic isotopes of granitoids are widely applied to fingerprint the source of granitoids and study the magma mingling and assimilation processes, aiming to decipher the planetary differentiation.
Lei Yang, Lei Yang, Lei Yang, Jia-Min Wang, Xiao-Chi Liu, Gautam P. Khanal, Gautam P. Khanal, Fu-Yuan Wu, Fu-Yuan Wu   +8 more
doaj   +1 more source

Remote sensing-based geological mapping and petrogenesis of Wadi Khuda Precambrian rocks, South Eastern Desert of Egypt with emphasis on leucogranite

Egyptian Journal of Remote Sensing and Space Sciences, 2021
The exposed Precambrian rocks along Wadi Khuda area, South Eastern Desert of Egypt, comprise gneisses, amphibolites and migmatites associations (infrastructural rocks) which are intruded by diorite, tonalite, syenogranite and leucogranite (LG).
Asran M. Asran, S.M. Hassan
doaj   +1 more source

Hydrothermal fluid evolution in the Cuonadong Sn–W–Be polymetallic deposit, southern Tibet: indicated by the in–situ element and boron isotope compositions of tourmaline

Frontiers in Earth Science, 2023
The Cuonadong Sn–W–Be polymetallic deposit in the Himalayan leucogranite belt is a representative hydrothermal deposit. The role of fluid exsolution directly from magma and the fluid reaction with surrounding rocks for ore-forming element enrichment is ...
Guozhi Xie, Guozhi Xie, Guozhi Xie, Haibo Yan, Rongqing Zhang, Kun Wang, Kun Wang, Kun Wang, Lipeng Zhang, Lipeng Zhang, Lipeng Zhang   +10 more
doaj   +1 more source

Partial melting of amphibolitic lower crust and subsequent melt-crystal separation for generation of the Early Eocene magmatism in eastern Himalaya

Frontiers in Earth Science, 2023
The Himalayan leucogranites provide a good opportunity to investigate the crustal evolution of the southern Qinghai-Tibet Plateau. In this study, we present zircon U-Pb and monazite U-Th-Pb ages, zircon Hf isotopes and whole-rock Sr-Nd-Pb isotopes and ...
Zuowen Dai, Zhiming Yang, Zhiming Yang, Guangming Li, Yuling Xie, Lei Dong, Ke Gao, Huawen Cao   +7 more
doaj   +1 more source

A new understanding of Demala Group complex in Chayu Area, southeastern Qinghai-Tibet Plateau: Evidence from zircon U-Pb and mica 40Ar/39Ar dating

China Geology, 2021
: The Chayu area is located at the southeastern margin of the Qinghai-Tibet Plateau. This region was considered to be in the southeastward extension of the Lhasa Block, bounded by Nujiang suture zone in the north and Yarlung Zangbo suture zone in the ...
Yuan Tang, Yu-ping Liu, Peng Wang, Wen-qing Tang, Ya-dong Qin, Xiao-dong Gong, Dong-bing Wang, Bao-di Wang   +7 more
doaj   +1 more source

Âge et genèse de la coupole granitique à métaux rares (Sn, Li, Nb-Ta, W) de Montebras (Creuse, Massif central français)

BSGF - Earth Sciences Bulletin, 2021
La coupole de Montebras est un petit massif de granite à métaux rares (Sn, W, Li, Nb-Ta) situé au nord du Massif Central Français qui se met en place au Carbonifère supérieur dans un encaissant plus ancien, le granite de Chanon (357,2 ± 2,1 Ma).
Marcoux Éric, Barré Benjamin, Pichavant Michel, Poujol Marc   +3 more
doaj   +1 more source

Tectonic activity along the inner margin of the South Tibetan Detachment constrained by syntectonic leucogranite emplacement in Western Bhutan

, 2017
In Western Bhutan Himalayas leucogranite dykes emplaced in sub-vertical hybrid fractures that cut across the high-grade rocks of the upper Greater Himalayan Sequence just below to the South Tibetan Detachment.
Carosi, Rodolfo, VISONA', DARIO, Montomoli, Chiara, Rubatto, Daniela, Visoná, Dario, Iaccarino, Salvatore, Iaccarino, Stefano   +6 more
core   +3 more sources

Behavior of apatite in granitic melts derived from partial melting of muscovite in metasedimentary sources

China Geology, 2021
: Fluid-absent and fluid-fluxed melting of muscovite in metasedimentary sources are two types of crustal anatexis to produce the Himalaya Cenozoic leucogranites.
Li-E Gao, Ling-sen Zeng, Ling-hao Zhao, Jia-hao Gao, Zhen Shang   +4 more
doaj   +1 more source