Results 41 to 50 of about 11,069 (182)

Reworking of the Tarim Craton by underplating of mantle plume-derived magmas: Evidence from Neoproterozoic granitoids in the Kuluketage area, NW China

, 2011
Most Neoproterozoic granitoids in the Kuluketage area, northern Tarim Craton are characterized by strongly depleted HREE abundances and high Sr/Y and (La/Yb) N ratios, showing typical geochemical features of adakitic rocks.
Chao Yuan, Xiaoping Long, Yuan, C., Long, X., Zhao, GC, Zhao, G, Sun, M, Long, X, Kröner, A, Long, XP, Wilde, S, Hu, A, Alfred Kröner, Hu, A., Kröner, A., Wilde, Simon, Sun, M., Guochun Zhao, Hu, AQ, Min Sun, Aiqin Hu, Yuan, C, Simon Wilde, Zhao, G.   +23 more
core   +1 more source

Heterogeneous Exhumation Mechanisms in Neoproterozoic Collisional Metamorphism: P–T Constraints From Pelotas and Punta del Este Terranes, Southern Brazil and Uruguay

Geological Journal, EarlyView.
Petrography, thermobarometry, and pseudosection modelling reveal peak metamorphic conditions of 3–7.5 kbar and 520°C–800°C in Tonian‐Cryogenian orthogneisses of the Dom Feliciano Belt. Metamorphic field gradients of 27°C/km–39°C/km and variable exhumation mechanisms support correlation of these units as remnants of a Himalayan‐type Piratini Orogeny ...
Thaiane Niederauer‐Santos, Carla Cristine Porcher, Daniel Triboli Vieira, Edinei Koester, Diego Jaldín, Karina Luengo, Luisa Caon   +6 more
wiley   +1 more source

Geochemistry of granitoids from Castelo Branco, Central Portugal [PDF]

, 2004
Só está disponível o resumoGeochemistry of granitoids from Castelo Branco, Central ...
Silva, M.M.V.G., Neiva, A.M.R., Antunes, I.M.H.R.   +2 more
core   +1 more source

Tab. 2.4-1. Whole rock and trace element analysis of Muehlig-Hofmannfjella granitoids, Central Dronning Maud Land, East Antarctica

, 2007
Tab. 2.4-1. Whole rock and trace element analysis of Muehlig-Hofmannfjella granitoids, Central Dronning Maud Land, East ...
Prasad, A V Keshava, Rasik Ravindra (6965288), Mervin D'Souza (6965282), Ravindra, Rasik, A V Keshava Prasad (6965285), D'Souza, Mervin   +5 more
core   +1 more source

Petrogenesis and Tectonic Setting of Late Mesozoic Felsic Magmatic Rocks in the Wangmushan Mining District, Northern Fujian, South China

Geological Journal, EarlyView.
The rhyolitic ignimbrite and K‐feldspar granite porphyry from the Wangmushan mining district, northern Fujian yield ages of 173.8 ± 0.8 and 102.6 ± 0.4 Ma, respectively. Geochemical data, zircon trace elements, whole‐rock Sr–Nd–Pb isotope data, and zircon Hf isotopic compositions indicate that the rhyolitic ignimbrite originated from partial remelting ...
Wei Shaogang, Hong Wentao, Xiao Fan, Jin Guodong, Shi Hongyang, Ma Zhiwang, Wu Chen, Xue Yujingyang   +7 more
wiley   +1 more source

Petrogenesis and geological significance of the Mesozoic granitoids in the Mangzhang-Jiucheng area, Tengchong terrane, Yunnan province: evidence from petrology, geochemistry and zircon U-Pb geochronology

Frontiers in Earth Science
The Mangzhang-Jiucheng granitoids of the Tengchong Terrane offers critical insights into the Mesozoic tectono-magmatic evolution of the eastern Tethyan Tectonic Domain.
Wei Liu, Wei Liu, Jinglong Wu, Yuelei Ruan, Chen Gong, Yan Shang, Geng Chen, Yuan Liu, Jialing Wu, Xiaojun Li, Xiaofeng Wang, Xu Kong, Xiong Mo   +12 more
doaj   +1 more source

Geochemical characteristics of the Granitoids of Mikir Hills Massif of Shillong Plateau, Northeast India: Implication for Pan-African Magmatic Activity

, 2009
Mikir Hills massif (MHM) of the Shillong plateau, in northeastern India extends over an area of about 7000 km2. MHM vis-à-vis Shillong plateau record granite magmatism from 881 to 479 Ma related to Pan-African magmatic event.
Ahmad, Talat, M. Faruque Hussain, Talat Ahmad, Faruque Hussain, M.   +3 more
core   +1 more source

An approach to geochemical characterization of productive versus barren granitoids in terms of iron in Central Turkey [PDF]

, 2004
The granitoids associated with, and without skarn type mineralizations in central Anatolia are termed as productive and barren granitoids, respectively. The study of the relationships between plutonic rocks in the Central Anatolian Crystalline Complex in
Sarac, C, Gencalioglu-Kuscu, G, Saraç, Cem, Kuşçu, İlkay, Kuscu, I, Meinert, LD, Kuşçu, Gonca Gençalioğlu, Meinert, Lawrence D.   +7 more
core   +1 more source

Neural Networks and Multivariate Analysis Based on Geochemical Data to Determine Stone Provenance From Ancient Calabrian Quarries (Southern Italy)

Archaeometry, EarlyView.
ABSTRACT This study shows an innovative approach to determine the origin of some Calabrian rocks quarried used in ancient times. Twenty‐five quarries, distributed in all the Calabrian provinces (Southern Italy), were studied and sampled. Ten samples were taken from each quarry, for a total of 250 samples.
Domenico Miriello, Stefano Columbu, Raffaella De Luca, Marco Lezzerini, Mirco Taranto, Fabrizio Antonelli   +5 more
wiley   +1 more source

On the genetic classification and tectonic implications of the Early Yanshanian granitoids in the Nanling Range, South China

, 2007
Early Yanshanian (Jurassic) granitoids are widespread in the Nanling Range of South China, and are associated with numerous non-ferrous and rare metal mineral deposits.
Li, Zheng-Xiang, Li, W., Li, X., Li WX, Li XH, Li ZX   +5 more
core   +1 more source