Journal ArticleDOI
Zircon ages defining deposition of the Palaeoproterozoic Soutpansberg Group and further evidence for Eoarchaean crust in South Africa
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TLDR
The Soutpansberg Group is subdivided into a lower and upper succession, which are separated from each other by a prominent regional unconformity as mentioned in this paper, and the oldest zircon grains have rounded shapes, however it is not clear whether they are mainly xenocrystic or detrital and have been rounded by resorption in a silicic magma chamber.About:
This article is published in Precambrian Research.The article was published on 2014-08-01. It has received 27 citations till now. The article focuses on the topics: Limpopo Belt & Zircon.read more
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Late Paleozoic closure of the Ob-Zaisan Ocean along the Irtysh shear zone (NW China): Implications for arc amalgamation and oroclinal bending in the Central Asian orogenic belt
TL;DR: In this article, detrital zircon ages, Hf isotope composition, structural data and Ar/Ar age constraints on the timing of deformation were used to map the exact location of the tectonic boundary.
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Early Neoproterozoic (∼840 Ma) arc magmatism: Geochronological and geochemical constraints on the metabasites in the Central Jiangnan Orogen
TL;DR: In this paper, a set of new zircon U-Pb geochronological, whole-rock elemental and Sr-Nd isotopic data for the metabasites have been obtained and presented in this paper.
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Structural evolution of the Irtysh Shear Zone (northwestern China) and implications for the amalgamation of arc systems in the Central Asian Orogenic Belt
TL;DR: In this paper, structural and geochronological data, together with other constraints on the timing of deformation suggests that the Irtysh Shear Zone was subjected to three phases of deformations in the late Paleozoic.
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Neoproterozoic-Early Paleozoic Peri-Pacific Accretionary Evolution of the Mongolian Collage System: Insights From Geochemical and U-Pb Zircon Data From the Ordovician Sedimentary Wedge in the Mongolian Altai
Yingde Jiang,Yingde Jiang,Karel Schulmann,Alfred Kröner,Min Sun,Ondrej Lexa,Vojtěch Janoušek,David Buriánek,Chao Yuan,Pavel Hanžl +9 more
TL;DR: In this paper, an integrated geological, geochemical and zircon U-Pb geochronological study was carried out on a giant Ordovician metasedimentary succession of the Mongolian Altai Mts. This succession is characterized by dominant terrigenous components mixed with volcanogenic material.
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Evolution of the Central Asian Orogenic Belt along the Siberian margin from Neoproterozoic-Early Paleozoic accretion to Devonian trench retreat and a comparison with Phanerozoic eastern Australia
TL;DR: In this paper, detrital zircon and Hf isotope data from various tectonic units along the southwestern Siberian margin were used to better understand the evolution of the Central Asian Orogenic Belt (CAOB).
References
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Three natural zircon standards for u‐th‐pb, lu‐hf, trace element and ree analyses
M. Wiedenbeck,P. Allé,Fernando Corfu,William L. Griffin,M. Meier,F. Oberli,A. von Quadt,J.C. Roddick,W. Spiegel +8 more
TL;DR: In this paper, the results of a study to develop natural zircon geochemical standards for calibrating the U-(Th)-Pb geochronometer and Hf isotopic analyses are reported.
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The application of laser ablation-inductively coupled plasma-mass spectrometry to in situ U–Pb zircon geochronology
TL;DR: In this paper, a laser ablation-inductively coupled plasma-mass spectrometer (LA-ICP-MS) was used for in situ U-Pb zircon geochronology.
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Correction of common lead in U-Pb analyses that do not report 204Pb
TL;DR: In this article, the authors proposed a correction method that neither uses 204Pb nor assumes concordance, but uses a numeric solution to a set of equations relating the content of radiogenic lead in a zircon or other U/Th-enriched mineral to its total lead content.
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Large igneous provinces: crustal structure, dimensions, and external consequences
Millard F. Coffin,Olav Eldholm +1 more
TL;DR: In this article, the authors compile all known in situ LIPs younger than 250 Ma and analyze dimensions, crustal structures, ages, and emplacement rates of representatives of the three major LIP categories: Ontong Java and Kerguelen-Broken Ridge oceanic plateaus, North Atlantic volcanic passive margins, and Deccan and Columbia River continental flood basalts Crustal thickness ranges from 20 to 40 km, and the lower crust is characterized by high (70-76 km s?1) compressional wave velocities.
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Reappraisement and refinement of zircon U-Pb isotope and trace element analyses by LA-ICP-MS
TL;DR: In this paper, a protocol was established for simultaneous measurements of zircon U-Pb ages and trace elements by LA-ICP-MS at spot sizes of 16-32?m.