Results 41 to 50 of about 8,056 (240)

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

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

PALEOZOIC GRANITOID MAGMATISM OF THE URALS: THE REFLECTION OF THE STAGES OF THE GEODYNAMIC AND GEOCHEMICAL EVOLUTION OF A COLLISIONAL OROGEN

Геодинамика и тектонофизика, 2021
The Ural mobile belt is an intracontinental epioceanic orogen that has already gone through all stages of the geodynamic development. Igneous rocks formed during each stage are important indicators for understanding the evolution of this belt and ...
V. V. Kholodnov, G. Yu. Shardakova, V. N. Puchkov, G. A. Petrov, E. S. Shagalov, D. N. Salikhov, A. V. Korovko, S. V. Pribavkin, I. R. Rakhimov, N. S. Borodina   +9 more
doaj   +1 more source

Resolving Micrometre‐Scale Zircon Growth in Silicic Systems by 7 μm LA‐MC‐ICP‐MS U‐Pb Dating: Linking Petrology and Geochronology in Silicic Volcanic and Granitic Rocks from Victoria, Australia

Geostandards and Geoanalytical Research, EarlyView.
Key Points 7 μm spot‐diameter LA‐MC‐ICP‐MS analyses yield accurate zircon U‐Pb ages. 1013 Ω amplifier resistors improve low‐signal Pb measurements. Saturn correction protocols minimise down‐hole fractionation effects. We present a systematic evaluation of high spatial‐resolution zircon U‐Pb dating using a Thermo Scientific Neoma multi‐collector ICP‐MS ...
Cristiano Lana, John D. Clemens
wiley   +1 more source

A reactive assimilation model for regional-scale cordierite-bearing granitoids: geochemical evidence from the Late Variscan granites of the Central Iberian Zone, Spain [PDF]

, 2008
Regional scale biotite and cordierite-bearing granites (s.l.) in the Variscan of the Central Iberian Zone (CIZ) are spatially closely associated with cordierite-rich nebulites and cordierite-bearing two-mica granites, and with cordierite-rich high grade ...
Ellam, R.M., Ugidos, J. M., Stephens, W. E., Carnicero, A., Stephens, W.E., Ellam, R. M., Ugidos, J.M.   +6 more
core   +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

New data on geochemical features, fluid mode, age and potential ore content of granitoids of Isherim anticlinorium (North Ural)

Литосфера, 2018
Granitoids of Ishirim anticlinorium which is one of the major Precambrian structures of the North Urals, are poorly studied by modern geochemical and isotope-geochronological methods that led to the existence of different points of view on formation ...
Georg A. Petrov, Vladimir V. Holodnov, Yurii L. Ronkin   +2 more
doaj   +1 more source

Radiogenic heat production in granitoids from the Sierras de Córdoba, Argentina

Geothermal Energy, 2021
One of the most important processes of heat generation from the Earth's interior is the radioactive decay of isotopes. The main hosts of the major radiogenic elements U, Th and K in the crust are granitoids.
M. Pleitavino, M. E. Carro Pérez, E. García Aráoz, M. A. Cioccale   +3 more
doaj   +1 more source

Static recrystallization of shocked calcite in Ries impact breccias

Meteoritics &Planetary Science, EarlyView.
Abstract Calcite is prone to chemical and microstructural modifications, especially after having been strained at high stresses and strain rates, as during hypervelocity impact events. These modifications include precipitation from pore fluid as well as replacement of strained volumes by recrystallization. In calcite aggregates of a metagranite breccia
Claudia A. Trepmann, Fabian Dellefant, Lina Seybold, Wolfgang W. Schmahl, Elena Sturm, Daniel Weidendorfer, Sandro Jahn, Iuliia V. Sleptsova, Stuart A. Gilder   +8 more
wiley   +1 more source

Central Asian Orogenic Belt Granitoids Geochemistry Dataset

, 2019
The dataset includes Table S1 to S7 of the granitoids from the Central Asian Orogenic ...
Jingao Liu (7861952)
core   +1 more source