Journal ArticleDOI
Constraints on the stratigraphic age of metasedimentary rocks from the Larsemann Hills, East Antarctica: possible implications for Neoproterozoic tectonics
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In this article, the authors investigated the ages of detrital zircon from paragneiss from the Larsemann Hills, East Antarctica, using the single-zircon PbPb thermal evaporation technique.About:
This article is published in Precambrian Research.The article was published on 1995-12-01. It has received 81 citations till now. The article focuses on the topics: Zircon & Metamorphism.read more
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Amalgamating eastern Gondwana: The evolution of the Circum-Indian Orogens
TL;DR: In this paper, the authors integrated Neoproterozoic palaeomagnetic solutions from the various blocks that made up eastern Gondwana, with the large amount of recent geological data available from the orogenic belts that formed as eastern gondwana amalgamated.
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A full-plate global reconstruction of the Neoproterozoic
Andrew Merdith,Andrew Merdith,Alan S. Collins,Simon Williams,Sergei Pisarevsky,John Foden,Donnelly B. Archibald,Donnelly B. Archibald,Morgan L. Blades,Brandon L. Alessio,Sheree Armistead,Diana Plavsa,Chris D. Clark,R. Dietmar Müller +13 more
TL;DR: In this article, a full-plate, topological model of the Neoproterozoic that maps the evolution of the tectonic plate configurations during this time is presented.
Journal ArticleDOI
Proterozoic basement provinces of southern and southwestern Australia, and their correlation with Antarctica
TL;DR: The Pinjarra Orogen as mentioned in this paper truncates the western margin of the Yilgarn Craton and Albany-Fraser Orogen, and contains allochthonous 1100-1000Ma gneissic blocks transported along the craton margin during at least two stages of Neoproterozoic transcurrent movement.
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Antarctica — Before and after Gondwana
TL;DR: The origin of the Antarctic continent can be traced to a relatively small late Archaean cratonic nucleus centred on the Terre Adelie regions of East Antarctica and the Gawler Craton region of South Australia as discussed by the authors.
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A review of tectonic events in the East Antarctic Shield and their implications for Gondwana and earlier supercontinents
TL;DR: In this article, it was shown that two mobile belts cut across the East Antarctic Shield, the Lutzow Holm and Prydz Belts, and these rework, truncate, and offset three regions of late Mesoproterozoic to early Neopropoencoderozoic tectonism: Maud, Rayner and Wilkes Provinces.
References
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Journal ArticleDOI
Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology
R.H. Steiger,E. Jäger +1 more
TL;DR: The IUGS Subcommission on Geochronology (FOOTNOTE 4) as discussed by the authors recommended the adoption of a standard set of decay constants and isotopic abundances in isotope geology.
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Least squares fitting of a straight line with correlated errors
TL;DR: In this paper, the fitting of a straight line when both variables are subject to crrors is generalized to allow for correlation of the z and y errors, illustrated by reference to lead isochron fitting.
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Remnants of ≥3800 Ma crust in the Chinese part of the Sino-Korean craton
TL;DR: In this article, the detrital zircons in an Archean metaquartzite are 3550 Ma or older; about one-fourth have ages between 3800 and 3850 Ma.
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Isotopic evidence for the Precambrian provenance and Caledonian metamorphism of high grade paragneisses from the Seve Nappes, Scandinavian Caledonides: II. Ion microprobe zircon U-Th-Pb
Ian S. Williams,Stefan Claesson +1 more
TL;DR: In this article, an ion microprobe U-Th-Pb analysis of residual cores and metamorphic mantles of zircons from three high grade paragneisses from the Seve Nappe Complex, north-western Sweden, showed that the sediments comprising the protolith of the gneisses over a distance of 250 km were probably derived from similarly-aged source terranes.
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Single-zircon evaporation combined with Pb+ emitter bedding for 207Pb/206Pb-age investigations using thermal ion mass spectrometry, and implications to zirconology
TL;DR: In this article, the internal precision of Pb isotope analyses using single-zircon evaporation in a double-filament solid source mass spectrometer was improved by combining the single grain with a suitable Pb+ emitter-bedding technique, which is most easily done by stepwise evaporating the investigated grain at temperatures of 1700-1800 K generating on the cold ionization filament a deposit of radiogenic Pb together with further elements and compounds derived directly from the crystal.
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B. J. Hensen,B. Zhou +1 more