Journal ArticleDOI
Evidence for forearc seafloor-spreading from the Betts Cove ophiolite, Newfoundland: oceanic crust of boninitic affinity
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TLDR
The Ordovician Betts Cove ophiolite of Newfoundland has a well-developed cumulate sequence, in which is rooted a sheeted dyke complex that grades up into pillow lavas as discussed by the authors.About:
This article is published in Tectonophysics.The article was published on 1998-01-30. It has received 126 citations till now. The article focuses on the topics: Sheeted dyke complex & Pillow lava.read more
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Ophiolite genesis and global tectonics: Geochemical and tectonic fingerprinting of ancient oceanic lithosphere
Yildirim Dilek,Harald Furnes +1 more
TL;DR: A review of these ideas as well as a new classification of ophiolites, incorporating the diversity in their structural architecture and geochemical signatures that results from variations in petrological, geochemical, and tectonic processes during formation in different geodynamic settings is presented in this article.
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Boninite-like volcanic rocks in the 3.7–3.8 Ga Isua greenstone belt, West Greenland: geochemical evidence for intra-oceanic subduction zone processes in the early Earth
TL;DR: In this paper, the most altered metavolcanic amphibolites (the Garbenschiefer unit) from the Central Tectonic Domain of the Isua greenstone belt are characterized by high Mg-number (060-080), MgO (7-18 wt%), Al2O3 (14-20 wt), Ni (60-645 ppm) and Cr (60−1920 ppm) contents, but low TiO2 (020-040 wt.), Zr (12-30 ppm), Y (6-14 ppm
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Birth, death, and resurrection: The life cycle of suprasubduction zone ophiolites
TL;DR: A consistent sequence of events during their formation and evolution that suggests that they form in response to processes that are common to all such ophiolites has been found in this article.
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Structure and geochemistry of Tethyan ophiolites and their petrogenesis in subduction rollback systems
TL;DR: In this article, the authors studied the geochemical evolution of the Tethyan ophiolites in the eastern Mediterranean region and found that they showed a progressive evolution from MORB-like to IAT (island arc tholeiite) to boninitic (extremely refractory) protoarc assemblages.
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To understand subduction initiation, study forearc crust: To understand forearc crust, study ophiolites
TL;DR: In this article, a strategy to better understand forearcs and thus subduction initiation by studying ophiolites, which preserve the magmatic stratigraphy, as seen in the Izu-Bonin-Mariana forearc, was proposed.
References
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Chemical and isotopic systematics of oceanic basalt : implications for mantle composition and processes
TL;DR: In this article, trace-element data for mid-ocean ridge basalts and ocean island basalts are used to formulate chemical systematics for oceanic basalts, interpreted in terms of partial-melting conditions, variations in residual mineralogy, involvement of subducted sediment, recycling of oceanic lithosphere and processes within the low velocity zone.
Journal ArticleDOI
Chemical and isotopic systematics of oceanic basalts. Implications for Mantle Composition and Processes
Book
Orogenic Andesites and Plate Tectonics
TL;DR: In this article, the authors define Orogenic Andesite and discuss its properties and properties, including the following: 1.1 Topography, gravity, heat flow, and conductivity.