Results 41 to 50 of about 30,693,449 (167)

PETROLOGI GRANITOID KAPUR DI KOMPLEKS GRANITOID PADEAN [PDF]

, 2022
Batuan granitoid di Provinsi Lampung dapat ditemukan di peta geologi regional lembar Kota Agung dan Lembar Tanjungkarang. Masih sedikitnya penelitian tentang batuan granitoid Formasi Granit Kapur di Lampung mendasari penelitian ini.
Nainggolan, Lamganda, Yogi Adi Prasetya, Lamganda Nainggolan, Farishi, Bilal Al, Bilal Al Farishi, Prasetya, Yogi Adi   +5 more
core   +1 more source

PETROLOGY AND RADIOACTIVITY OF EL MAGAL GRANITOID ROCKS, QENA-SAFAGA ROAD, CENTRAL EASTERN DESERT, EGYPT [PDF]

Delta Journal of Science, 2006
The present work deals with the granitoid rocksof GabalEl Magal (35km2) which located along Qena-Safaga road, central Eastern Desert of Egypt. Petrographically, the studied granites are composed essentially of perthite, quartz, plagioclase and ...
A.A. El Nahas
doaj   +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 the Serifos calc-alkaline granodiorite pluton, Greece: constraining the crust and mantle contributions to I-type granitoids

International Journal of Earth Sciences, 2017
The Late Miocene (11.6–9.5 Ma) granitoid intrusion on the island of Serifos (Western Cyclades, Aegean Sea) is composed of syn- to post-tectonic granodiorite with quartz monzodiorite enclaves, cut by dacitic and aplitic dikes. The granitoid, a typical I-type metaluminous calcic amphibole-bearing calc-alkaline pluton, intruded the Cycladic Blueschists ...
Stouraiti, C., Baziotis, I., Asimow, P. D., Downes, H.   +3 more
openaire   +3 more sources

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

Mesoarchean charnockites from the Coorg Block, Southern India: Petrology, geochemistry and tectonic implications

Geosystems and Geoenvironment, 2023
Charnockites constitute the major rock type in the crustal blocks of Southern Granulite Terrain (SGT) in India. Here we present petrology, mineral chemistry, and geochemistry of the oldest charnockites in the SGT from the Coorg Block.
S.G. Dhanil Dev, E. Shaji, M. Santosh, T. Tsunogae, R.S. Prasanth   +4 more
doaj   +1 more source

The rise and fall of a volcanic plateau: Landscape evolution at the fringes of the former Patagonian Ice Sheet, Meseta Chile Chico, central Patagonian Andes

Journal of Quaternary Science, EarlyView.
ABSTRACT Understanding Earth‐surface processes along the fringes of large ice sheets is integral to deciphering cold‐region environmental variability and anticipating slope instability under climate change. We investigate the Meseta Chile Chico, a volcanic plateau in the central Patagonian Andes, located at the eastern margin of the former Patagonian ...
Carolina Franco, Emma‐Louise Cooper, Antonio Maldonado, María Eugenia de Porras, Amalia Nuevo‐Delaunay, César Méndez, Varyl R. Thorndycraft, Alessa Geiger, Bernd Zolitschka   +8 more
wiley   +1 more source

Quartz trace elements composition of different granitoids: case studies from the Kaboodan, Baneh and Sabzevar areas [PDF]

علوم زمین خوارزمی
In this study, the trace element composition of various types of granitoids (I-type, S-type, and plagiogranites) at different geological settings was measured using the LA-ICP-MS method, and their distribution was investigated. The amounts of elements Al,
Seyed Ali Mazhari, Kazem Aliabadi
doaj  

Petrography, geochemistry and tectonic setting of adakitic bodies in the Tighanab area and their relationship with iron skarn mineralization (southeast of Sarbisheh-east of Iran)

Journal of Economic Geology, 2021
Introduction The Tighanab area is located in the Southern Khorasan province and 104km south-east of Sarbisheh, in the eastern part of Sistan suture zone (Tirrul et al., 1983).
Malihe Nakhaei, Seyyed Saeid Mohammadi
doaj   +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