Results 161 to 170 of about 1,193 (219)

Orogen styles in the East African Orogen: A review of the Neoproterozoic to Cambrian tectonic evolution.

J Afr Earth Sci, 2013
Fritz H, Abdelsalam M, Ali KA, Bingen B, Collins AS, Fowler AR, Ghebreab W, Hauzenberger CA, Johnson PR, Kusky TM, Macey P, Muhongo S, Stern RJ, Viola G.   +13 more
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Emplacement age of leucogranite in the Kampa Dome, southern Tibet

Tectonophysics, 2016
Abstract Himalayan leucogranite is an important rock to decipher the orogenic evolution of the Himalayan orogen. It has been recognized that the leucogranite occurred as two separate, but parallel belts within Himalaya. Leucogranite in the north belt is mainly exposed an intrusion component within the gneissic dome.
Xiao-Chi Liu, Fu-Yuan Wu, Zhi-Chao Liu   +2 more
exaly   +2 more sources

San Pedro Leucogranite from a Coruña, Northwest of Spain: Uses of a Heritage Stone

Energy Procedia, 2016
Trabajo presentado en la EGU General Assembly 2016 (European Geosciences Union), celebrada en Viena del 17 al 22 de abril de 2016.Place names often provide examples of the importance that a heritage stone has had with the foundation of cities and ...
David Martin Freire-Lista, Rafael Fort
exaly   +4 more sources

Identifying xenocrystic tourmaline in Himalayan leucogranites

American Mineralogist, 2023
Abstract Tourmaline is a common autocrystic mineral in granitic and pegmatitic rocks that records valuable information on the physicochemical evolution of magmas. However, xenocrystic tourmaline that does not crystallize from host magmas is also common but seldom reported and notoriously difficult to identify.
Jinsheng Han, Huayong Chen, Haijun Xu, Olivier Nadeau, Chang Xu   +4 more
openaire   +1 more source

Geochemistry and Ar–Ar muscovite ages of the Daraban Leucogranite, Mawat Ophiolite, northeastern Iraq: Implications for Arabia–Eurasia continental collision

Journal of Asian Earth Sciences, 2014
Daraban Leucogranite dykes intruded discordantly into the basal serpentinized harzburgite of the Mawat Ophiolite, Kurdistan region, NE Iraq. These coarse grained muscovite-tourmaline leucogranites are the first leucogranite dykes identified within the ...
Yousif O Mohammad, D H Cornell
exaly   +2 more sources

Petrochemical characteristics of leucogranite and a case study of Bengbu leucogranites

Science Bulletin, 2009
Leucogranites have a relatively narrow variation in SiO2 content (70.5%–75.5%). Giving similar SiO2 content, leucogranites have relatively higher Al2O3 (>13.5%) and lower TFeO + MgO (
SuShu Guo, ShuGuang Li
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Experimental Crystallization of Leucogranite Magmas

Journal of Petrology, 1995
Abstract Both crystallization and melting experiments have been carried out on two natural, biotite-muscovite (DK) and tourmaline-muscovite (GB) High Himalayan leucogranites (HHL) at 4 kbar, logfO2 = FMQ−0·5, aH2O = 1−0⋅03, and at five temperatures between 803 and 663°C H2O contents of the quenched glasses were analysed by ion ...
BRUNO SCAILLET, MICHEL PICHAVANT, JACQUES ROUX   +2 more
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Crustal generation of the Himalayan leucogranites

Tectonophysics, 1987
Abstract Detailed studies of the Himalayan two-mica leucogranites, such as the Manaslu pluton, indicate that they have very uniform mineralogical, petrological and structural characteristics. One can relate their occurrence to the thickest zones of the underlying Tibetan Slab.
P. Le Fort, M. Cuney, C. Deniel, C. France-Lanord, S.M.F. Sheppard, B.N. Upreti, P. Vidal   +6 more
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Two-mica and tourmaline leucogranites from the Everest-Makalu region (Nepal-Tibet). Himalayan leucogranite genesis by isobaric heating?.

Lithos, 2002
In the Higher Himalaya of the region from Cho Oyu to the Arun valley northeast of Makalu, the Miocene leucogranites are not hosted only in the upper High Himalayan Crystallines (HHC); a network of dykes also cuts the lower HHC and the Lesser Himalayan Crystallines (LHC).
VISONA', DARIO, LOMBARDO B.
openaire   +3 more sources

Himalayan Leucogranites: A Geochemical Perspective

Elements
The geochemical characterization of Himalayan leucogranites offers important insights into both their petrogenesis and Himalayan orogenic processes. Himalayan leucogranites are characterized by strongly peraluminous compositions that are comparable to melts derived from anatexis of sedimentary rocks.
Ze-Zhou Wang, Fang-Zhen Teng, Lingsen Zeng, Zhi-Chao Liu   +3 more
openaire   +1 more source