High spatial resolution analysis of Pb and U isotopes for geochronology by laser ablation multi-collector inductively coupled plasma mass spectrometry (LA-MC-ICP-MS) [PDF]
, 2009 A determinação de idades através do decaimento dos isótopos radioativos 235U e 238U para os isótopos radiogênicos 207Pb e 206Pb, respectivamente, utilizando o mineral zircão (ZrSiO4), é amplamente aplicada para decifrar processos geológicos.
Bühn, Bernhard +3 more
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Brazilian Journal of GeologyMorrinhos granite is a batholith body that is slightly elongated in the NNW direction and approximately 1,140 km2 long; it is located in the municipality of Vila Bela da Santíssima Trindade of the state of Mato Grosso, Brazil, in the Paraguá Terrane ...
Ohana França +4 more
doaj +1 more source
The Paleoproterozoic Chibaisong Mafic-Ultramafic Intrusion and Cu-Ni Deposit, North China Craton: SHRIMP Zircon U-Pband Re-Os Geochronology and Geodynamic Implications [PDF]
, 2014 published_or_final_versio
Ao, SJ +8 more
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The ∼860-Ma, cordilleran-type guandaoshan dioritic pluton in the Yangtze Block, SW China: Implications for the origin of neoproterozoic magmatism [PDF]
, 2008 The tectonic setting of the widespread Neoproterozoic igneous rocks in South China has long been a matter of debate. Situated in the western margin of the Yangtze Block of South China, the Guandaoshan pluton is composed of diorite in the core and quartz ...
Sun, WH, Zhou, MF
core +1 more source
New U-Pb zircon ages of El Baúl Massif, Cojedes State, Venezuela
Revista Técnica de la Facultad de IngenieríaEl Baúl massif (Cojedes State, Venezuela) has been studied since 1858, especially as an important target for oil companies since it is a structural high that has played an important role in the evolution of the oil bearing Barinas-Apure and Eastern ...
Patxi Viscarret +2 more
doaj
, 2003 Detrital zircon geochronology was conducted on five sandstone units from the Athabasca Group of northern Saskatchewan and Alberta using the SHRIMP II ion microprobe. In ascending stratigraphic order, the youngest zircons from the Fair Point Formation and from members B and D of the Manitou Falls Formation yielded maximum ages of deposition of 1810 ± 15
N M Rayner, R A Stern, R H Rainbird
openaire +1 more source
Gondwana Research, 2011 Abstract In the northern extension of the Famatina and the southern Puna (NW Argentina) prominent rhyolitic volcanic rocks traditionally referred to as Ordovician are exposed, resting on metamorphic basement and covered by thick Late Paleozoic siliciclastic successions.
Martina, Federico +4 more
openaire +2 more sources
Neoproterozoic A-type magmatism in the Western Sierras Pampeanas (Argentina): evidence for Rodinia break-up along a proto-Iapetus rift? [PDF]
, 2006 A-type orthogneisses of mid Neoproterozoic age (774 ± 6 Ma, U-Pb SHRIMP zircon age), are reported for the first time from the Grenvillian basement of the Western Sierras Pampeanas in Argentina. These anorogenic meta-igneous rocks represent the latest
Baldo, Edgardo G. +7 more
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Литосфера, 2017 In the article is presented data of mineralogy, petrography, geochemistry and isotope-geochronology study Nyashevo mafic-ultramafic massif in Ilmeny-Vishnevogorsk polymethamorphic shear zone. The ultramafic rocks consist of serpentine and chlorite (up to
Natal’ya M. Valizer +3 more
doaj +2 more sources
U-Pb zircon age of Ordovician magmatism in the Albera Massif (Eastern Pyrenees)
Geologica Acta, 2011 New geochronological data from the Albera Massif confirm the presence of an Early – Mid Ordovician igneous event (472 - 465Ma) recorded in the pre-Variscan rocks of the Pyrenees.
M. LIESA TORRE-MARÍN +5 more
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