Journal ArticleDOI
Geochemical investigations of deep-seated rocks in the Australian shield
I.B. Lambert,K.S. Heier +1 more
TLDR
In this article, it is considered that the medium to high pressure granulite terranes reflect chemical trends with increasing depth in the continental crust, these trends are the results of modifications of the original compositions by metamorphic (including melting) processes.About:
This article is published in Lithos.The article was published on 1968-01-01. It has received 182 citations till now. The article focuses on the topics: Granulite & Metamorphic facies.read more
Citations
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Journal ArticleDOI
Rare earth element patterns and crustal evolution—I. Australian post-Archean sedimentary rocks
W.B Nance,Stuart Ross Taylor +1 more
TL;DR: A suite of Australian shales, greywackes and subgreywacks ranging in age from Proterozoic to Triassic were analyzed for the rare earth elements (REE) in order to detect any secular changes in rare earth distribution.
Journal ArticleDOI
The mean age of mantle and crustal reservoirs
TL;DR: In this article, a simple transport model for the evolution of continents and crusts is proposed, where continents are derived by melt extraction over the history of the earth from undepleted mantle, and the residue forms a depleted mantle (j = 2), which today is the source of mid-ocean ridge basalts.
The Mean Age of Mantle and Crustal Reservoirs for the Planet Mars
S. B. Jacobsen,Yin Q-Z. +1 more
TL;DR: Based on all available isotopic and trace element data for SNCs, the authors obtained a mean age of formation of the crust on Mars of 34 +/- 6 Ga, which is the same as the age of the Earth's crust.
Journal ArticleDOI
Anorthosite massifs, rapakivi granites, and late proterozoic rifting of north America
TL;DR: Anorthosite-quartz mangerite complexes are the chief manifestations of Elsonian magmatic activity of Paleohelikian age (about −1500 to −1400 Ma) in Labrador, Canada as mentioned in this paper.
Journal ArticleDOI
The transformation of amphibolite facies gneiss to charnockite in southern Karnataka and northern Tamil Nadu, India
TL;DR: In this paper, Petrologic investigations in the transitional zone south of Mysore have established the following points:============ ✓ ✓ ✓ • ✓ ✓• ✓ • • ✓• • • • · • •• •• The transition from the metamorphic grade to the granulite grade is prograde.
References
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Journal ArticleDOI
An experimental investigation of the gabbro to eclogite transformation and its petrological applications
David H. Green,A.E. Ringwood +1 more
TL;DR: In this paper, a variety of basaltic compositions have been studied experimentally in the pressure range from 1 bar to 30 kb at temperatures above 1000°C and below the basalt solidus and the mineral assemblages are characterized by coexistence of garnet, clinopyroxene, plagioclase and, commonly, quartz.
Journal ArticleDOI
An experimental investigation of the Gabbro-Eclogite transformation and some geophysical implications
A.E. Ringwood,David H. Green +1 more
TL;DR: A detailed experimental investigation of the gabbro-eclogite transformation in several basalts has been carried out in this article, where more than 200 runs at temperatures between 900 and 1,250°C and pressures up to 30 kbar were made, and the resultant phase assemblages studied by optical and X-ray techniques.
Book
Physical methods in determinative mineralogy
TL;DR: In this paper, the authors present a collection of 13 chapitres of modernes physiques de traitement du mat6riau and des mesures without trop insister sur leur aspect th6orique.
Journal ArticleDOI
Geochemistry of pelitic rocks. part iii: major elements and general geochemistry
TL;DR: In this article, a compilation of 155 analyses gives the following average composition of all pelitic rocks in per cent, from low to high grade (standard deviations in parentheses): SiO 2, 61.54 (4.68); TiO 2, 0.82 (0.61); A1 2 O 3, 16.36 (1.97); FeO, 3.90 (2.25); MgO, 2.52 (1).
Related Papers (5)
The vertical distribution of uranium, thorium, and potassium in the Continental Crust
I.B. Lambert,K.S Heier +1 more