Journal ArticleDOI
Neoarchaean mafic volcanic rocks from the southern Bastar greenstone belt, Central India: petrological and tectonic significance
Reads0
Chats0
TLDR
In this paper, the authors interpret the geochemical characteristics of the mafic volcanic rocks to most likely reflect variations in source characteristics, together with minor crustal contamination, rather than the process of volcanic-arc magmatism.About:
This article is published in Precambrian Research.The article was published on 2004-06-15. It has received 69 citations till now. The article focuses on the topics: Mafic & Greenstone belt.read more
Citations
More filters
Journal ArticleDOI
Mesoproterozoic paleogeography Supercontinent and beyond
TL;DR: A set of global paleogeographic reconstructions for the 1770-1270 Ma time interval is presented in this article through a compilation of reliable paleomagnetic data and geological constraints.
Journal ArticleDOI
Precambrian crustal evolution of Peninsular India: A 3.0 billion year odyssey
Joseph G. Meert,Manoj K. Pandit,Vimal R. Pradhan,Jonathan Banks,Robert Sirianni,Misty M. Stroud,Brittany Newstead,Jennifer N. Gifford +7 more
TL;DR: In this paper, the authors review the major tectonic and igneous events that led to the formation of Peninsular India and provide an up-to-date geochronologic summary of the Precambrian.
Journal ArticleDOI
Stagnant lids and mantle overturns: Implications for Archaean tectonics, magmagenesis, crustal growth, mantle evolution, and the start of plate tectonics
TL;DR: The lower plate is the dominant agent in modern convergent margins characterized by active subduction, as negatively buoyant oceanic lithosphere sinks into the asthenosphere under its own weight as discussed by the authors.
Journal ArticleDOI
The genesis of Archaean chromitites from the Nuasahi and Sukinda massifs in the Singhbhum Craton, India
TL;DR: The chromitite seams of the Nuasahi and Sukinda massifs are part of layered ultramafic bodies which occur within Archaean low-grade metamorphic rocks of the Iron Ore Group (IOG) in the Singhbhum Craton of the Indian Shield.
Journal ArticleDOI
Precambrian greenstone sequences represent different ophiolite types
TL;DR: In this paper, a global geochemical dataset from one hundred-and-five greenstone sequences, ranging in age from the Eoarchean through the Archean and Proterozoic Eons, was examined to identify different ophiolite types (c.f. Zr) with distinct tectonic origins in the Precambrian rock record.
References
More filters
Journal ArticleDOI
A chemical classification of volcanic rocks based on the total alkali-silica diagram
Journal ArticleDOI
A method of discriminating between different types of mid-ocean ridge basalts and continental tholeiites with the Nb1bZr1bY diagram
TL;DR: In this paper, the immobile trace elements Nb, Zr and Y were used to distinguish between different types of mid-ocean ridge basalts (MORB) including N-type MORB, from normal midocean ridges and P-type, from plume-influenced regions).
Journal ArticleDOI
Rare-earth abundances in chondritic meteorites
TL;DR: In this article, 15 chondrites, including eight carbonaceous chondites, were analyzed for rare earth element abundances by isotope dilution, and the persistence of anomalies in chondritic materials relatively removed from direct condensational processes implies that anomalous components were introduced at a late stage of chondrite formation.
Journal ArticleDOI
Geochemical and geodynamical constraints on subduction zone magmatism
TL;DR: In this article, a quantitative model has been developed for IAB petrogenesis with the transfer of trace elements from the slab to the mantle wedge being modelled with empirical slab-fluid partition coefficients whilst the mantlewedge to arc-crust transfer is constrained by melt-solid partitioning.