Journal ArticleDOI
Geochemical investigations of the origin of the Manaslu leucogranite (Himalaya, Nepal)
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TLDR
In this paper, a geochemical study was conducted to examine the crustal origin of the granite, to verify whether the paragneisses of the Tibetan Slab are the most probable parent material and to determine the subsequent petrogenetic processes.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1982-11-01. It has received 254 citations till now. The article focuses on the topics: Leucogranite.read more
Citations
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Trace element discrimination diagrams for the tectonic interpretation of granitic rocks
TL;DR: In this article, a data bank containing over 600 high quality trace element analyses of granites from known settings was used to demonstrate using ORG-normalized geochemical patterns and element-SiO2 plots that most of these granite groups exhibit distinctive trace element characteristics.
Journal ArticleDOI
Tectonic discrimination of granitoids
Papu D. Maniar,Philip M. Piccoli +1 more
TL;DR: In this paper, the classification of granitoids is based on the major-element chemistry, and various discrimination plots are presented which sequentially discriminate the different tectonic environments.
Journal ArticleDOI
Geochemical characteristics of collision-zone magmatism
TL;DR: The results of a systematic geochemical study of intermediate and acid intrusive rocks from a number of continent-continent collision zones of Phanerozoic age were reported in this paper.
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Tectonics of the Himalaya and southern Tibet from two perspectives
TL;DR: In this article, the authors synthesize the known geology of this orogenic system, with special attention paid to the tectonic evolution of the Himalaya and southernmost Tibet since India-Eurasia collision at ca. 50 Ma.
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The effect of initial230Th disequilibrium on young UPb ages: the Makalu case, Himalaya
TL;DR: In this paper, the authors compare the ages of zircon, xenotime, and monazite from two different samples of the Himalayan Makalu granite and show the two U decay series to be in disequilibrium.
References
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Journal ArticleDOI
Approximation of terrestrial lead isotope evolution by a two-stage model
J.S. Stacey,Jan Kramers +1 more
TL;DR: In this paper, a two-stage model for terrestrial lead isotope evolution is proposed, which permits the age of the earth to be that of the meteorite system and also yields good model ages for samples of all ages.
Journal ArticleDOI
Trace element fractionation during anatexis
TL;DR: The theoretical basis of trace element fractionation presented in a paper by P. W. Gast (1968) can be developed in a more flexible algebraic form, which is described and illustrated in this article.
Journal ArticleDOI
Plumbotectonics-the model
R.E. Zartman,B.R. Doe +1 more
TL;DR: Plumbotectonics is an attempt to model the geochemical behaviour of U, Th and Pb, among major terrestrial reservoirs in agreement with observational data as discussed by the authors, by recycling rock through the orogenic environment, a dynamically communicating upper crust, lower crust, and mantle can produce the required patterns of lead-isotope evolution.
Journal ArticleDOI
Lead isotopic study of young volcanic rocks from mid-ocean ridges, ocean islands and island arcs
TL;DR: Lead isotopic compositions of young volcanic rocks from different tectonic environments have distinctive characteristics their differences are evaluated within the framework of global tectonics and mantle differentiation Ocean island leads are in general more radiogenic than mid-ocean ridge basalt (morb) leads as discussed by the authors.
Journal ArticleDOI
Ore lead isotope ratios in a continuously changing earth
G.L. Cumming,J.R. Richards +1 more
TL;DR: In this paper, a critical re-assessment of the construction of simple ore lead isotopic development curves is followed by three fresh approximations, all designed to involve the minimum possible number of assumptions.
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