Results 31 to 40 of about 28,842 (211)

Timing of the magmatism of the paleo-Pacific border of Gondwana: U-Pb geochronology of Late Paleozoic to Early Mesozoic igneous rocks of the north Chilean Andes between 20° and 31°S [PDF]

, 2014
Indexación: Web of Science; ScieloABSTRACT. U-Pb zircon geochronological data provide record of about 130 Ma of igneous activity in the Andes of northern Chile, which extended episodically from the latest Early Carboniferous to Early Jurassic (328-194 Ma)
Maksaev, Víctor, Munizaga, Francisco, Tassinari, Colombo   +2 more
core   +1 more source

Early Cambrian U-Pb zircon age and Hf-isotope data from the Guasayán pluton, Sierras Pampeanas, Argentina: implications for the northwestern boundary of the Pampean arc [PDF]

, 2016
An Early Cambrian pluton, known as the Guasayán pluton, has been identified in the central area of Sierra de Guasayán, northwestern Argentina. A U?Pb zircon Concordia age of 533 ± 4 Ma was obtained by LA-MC-ICP-MS and represents the first report of ...
Alasino, Pablo Horacio, Baldo, Edgardo Gaspar Agustín, Basei, Miguel A. S., da Costa Campos Neto, Mario, Dahlquist, Juan Andrés, Rapela, Carlos Washington, Uran, Gimena Mariel, Verdecchia, Sebastián Osvaldo, Zandomeni, Priscila Soledad   +8 more
core   +2 more sources

U–Pb SHRIMP zircon dating and geochemistry of metapelites from the Shillong Meghalaya Gneissic Complex, NE India: Implications for nature of protolith and tectonic setting

Geosystems and Geoenvironment, 2023
The Sonapahar area of Shillong Meghalaya Gneissic Complex (SMGC) is an extension of the Central India Tectonic Zone within the Precambrian Indian shield.
Shyam Bihari Dwivedi, Pratigya Pathak, Kevilhoutuo Theunuo, Ravi Ranjan Kumar   +3 more
doaj   +1 more source

K-bentonites in the Argentine Precordillera contemporaneous with rhyolite volcanism in the Famatinian Arc [PDF]

, 2004
New U–Pb radiometric dates for K-bentonite horizons within the Lower Cambrian to Middle Ordovician platform carbonates from the Precordillera terrane of NWArgentina provide further constraints on models for the allochthonous or parautochthonous ...
Baldo, Edgardo G., Casquet, César, Fanning, C.M., Galindo Francisco, Mª del Carmen, Pankhurst, R.J., Rapela, Carlos W.   +5 more
core  

Indosinian high-strain deformation for the Yunkaidashan tectonic belt, south China : Kinematics and 40Ar/39Ar geochronological constraints [PDF]

, 2007
Structural and 40Ar/39Ar data from the Yunkaidashan Belt document kinematic and tectonothermal characteristics of early Mesozoic Indosinian orogenesis in the southern part of the South China Block.
Bureau of Geology and Mineral Resources of Guangdong Province (GDBGMR), Bureau of Geology and Mineral Resources of Guangxi Zhuang Autonomous Region (GXBGMR), Bureau of Geology and Mineral Resources of Jiangxi Province (JXBGMR), Cai, Carter, Cawood, Cawood, Cawood, Chen, Chen, Chen, Chen, Cobbold, Cruden, Deng, Deprat, Ding, Dodson, Ellis, Engebretson, Faure, Fromaget, Goodel, Gradstein, Guo, Hacker, Hames, Harrison, Hodges, Holloway, Hsû, Huang, Hunan Bureau of Geology and Mineral Resources (HNBGMR), Konopásek, Law, Lepvrier, Li, Li, Li, Li, Liang, Liang, Lin, Liu, Lo, Metcalfe, Metcalfe, Monir, Peng, Peng, Peng, Peng, Peter A. Cawood, Purdy, Qiu, Ren, Richard, Sang, Shaocheng Ji, Stevens, Thompson, Touping Peng, Tullis, Twiss, Veevers, Veevers, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Weiming Fan, Willett, Woodcock, Xinyue Chen, Xu, Xu, Xu, Yan, Yardley, Yuan, Yuejun Wang, Zhang, Zhong, Zhong, Zhou, Zhou, Zhu   +90 more
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Detrital zircons U–Pb SHRIMP ages and provenance of La Modesta Formation, Patagonia Argentina

Journal of South American Earth Sciences, 2013
Abstract This paper summarizes the geology of the Paleozoic La Modesta Formation in Patagonia, Argentina, and presents new SHRIMP U–Pb dating of detrital zircons from muscovite-chlorite schist and tourmalinite. Also complementary geochemical and lead isotopic data are presented, indicating that the protoliths were formed from upper crustal rocks by ...
Moreira, Pilar, Fernández, Raúl, Hervé Allamand, Francisco, Fanning, C. Mark, Schalamuk, Isidoro A.   +4 more
openaire   +5 more sources

Contributions to the geochronology and geological evolution of the Central African Copperbelt [PDF]

, 2006
PhD - ScienceThis thesis presents the results of a broad geochronological investigation into the nature and evolution of the Central African Copperbelt, host of world class Cu-Co deposits in Zambia and the Democratic Republic of Congo.
Rainaud, Christine Claire Laurence
core  

U-pb dating of niobium minerals from pyrochlor group (ilmeno-vishnevogorsk carbonatitis-miaskite complex, of the southern urals)

Литосфера, 2018
U-Pb dating of the pyrochlore-group minerals from the Nb-rare metal ore deposits of ilmeny-vishnevogorsky carbonatite-miaskite complex of the Ural fold region was carried out.
Irina L. Nedosekova, Viktor A. Koroteev, Boris V. Belyatsky, Viktor V. Sharygin, Еlena N. Lepechinа, Sergei V. Pribavkin   +5 more
doaj   +1 more source

Timing of thermal events in eastern Dronning Maud Land, East Antarctica [PDF]

, 2003
Using cathodoluminescence (CL)images,the zircons analyzed by K. Shiraishi et al.(J.Geol.,102,47,1994) for SHRIMP U-Pb dating (prior to the use of CL images) have been re-examined in order to unravel the periods of multiple zircon growth in eastern ...
C.M. Fanning, Kazuyuki Shiraishi, Keiji Misawa, Tomokazu Hokada, Yoichi Motoyoshi   +4 more
core   +1 more source

Late Permian volcanic dykes in the crystalline basement of the Považský Inovec Mts. (Western Carpathians): U–Th–Pb zircon SHRIMP and monazite chemical dating

Geologica Carpathica, 2017
This paper presents geochronological data for the volcanic dykes located in the northern Považský Inovec Mts. The dykes are up to 5 m thick and tens to hundreds of metres long.
Pelech Ondrej, Vozárová Anna, Uher Pavel, Petrík Igor, Plašienka Dušan, Šarinová Katarína, Rodionov Nikolay   +6 more
doaj   +1 more source