Journal ArticleDOI
Tectonic setting of basic volcanic rocks determined using trace element analyses
Julian A. Pearce,J.R. Cann +1 more
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In this paper, the results of analyses for Ti, Zr, Y, Nb and Sr in over 200 basaltic rocks from different tectonic settings have been used to construct diagrams in which these settings can usually be identified.About:
This article is published in Earth and Planetary Science Letters.The article was published on 1973-06-01. It has received 3403 citations till now. The article focuses on the topics: Volcanic rock & Basalt.read more
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Geochemical evolution of an Ordovician island arc, south Mayo, Ireland
Peter D. Clift,Paul Ryan +1 more
TL;DR: Early Ordovician volcanic rocks exposed in the South Mayo region of western Ireland document the history of a volcanic arc complex, produced following the initiation of south-dipping subduction within the Iapetus Ocean in the Late Cambrian or Early Oodovician as discussed by the authors.
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Geochemistry of the Dubois greenstone succession: An early Proterozoic bimodal volcanic association in west-central Colorado
Kent C. Condie,Janet A. Nuter +1 more
TL;DR: The Dubois greenstone succession as discussed by the authors is composed of fine-grained felsic volcaniclastic sediments, ash-flow tuffs, and tholeiitic flows, sills and dikes.
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Distribution and tectonic setting of Ordovician K-bentonites in the United Kingdom
TL;DR: In this article, twenty-five Ordovician K-bentonite samples ranging in age from Llanvirn to Ashgill and representing both sides of the lapetus suture were analysed by INAA and XRF and compared on magmatic and tectonic discrimination diagrams.
Journal ArticleDOI
Geochemistry of mafic rocks of the Karakaya complex, Turkey: evidence for plume-involvement in the Palaeotethyan extensional regime during the Middle and Late Triassic
Kaan Sayit,M. Cemal Göncüoglu +1 more
TL;DR: In this paper, the authors show that a mantle plume-related magmatism associated with extensional oceanic system should have been installed within Palaeotethys during Middle-Late Triassic time, which was then incorporated into subduction-accretion prism forming the final picture, that is, the Karakaya Complex.
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Late Proterozoic High‐pressure granulite facies meta‐morphism in the north‐east Ox inlier, north‐west Ireland
TL;DR: In this article, high-pressure granulite-facies gneisses in the NE Ox inlier in NW Ireland have undergone extensive Caledonian retrogression.
References
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Journal ArticleDOI
Origin of Basalt Magmas: An Experimental Study of Natural and Synthetic Rock Systems
H. S. Yoder,C. E. Tilley +1 more
Journal ArticleDOI
Origin and development of marginal basins in the western Pacific
TL;DR: In this paper, the existence of low density, high temperature upper mantle is indicated by the lack of a large gravity anomaly over the shallow oceanic crust of the inter-arc basin, by high heat flow there, and by anomalously high attenuation of shear waves passing through the upper mantle beneath the extensional zone.
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The Troodos Massif, Cyprus and other Ophiolites as Oceanic Crust: Evaluation and Implications
Eldridge M. Moores,F. J. Vine +1 more
TL;DR: The Troodos Massif as discussed by the authors consists of a pseudostratiform mass of harzburgite, dunite, pyroxenite, gabbro, quartz diorite, diabase and pillow lava arranged in a dome-like manner.
Journal ArticleDOI
Major and Trace Element Abundances in Volcanic Rocks of Orogenic Areas
P. Jakeš,A. J. R. White +1 more
TL;DR: In this paper, the composition of island-arc volcanic rocks in relation to their geographic and stratigraphic relations is discussed and the differences in composition between volcanic rocks and those in continental margins are pointed out.
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Rare earth elements and the island arc tholeiitic series
P. Jakesˇ,James B. Gill +1 more
TL;DR: The island arc tholeiitic series as mentioned in this paper is the most dominant in many western Pacific and Atlantic Island arcs and represents the earliest stages in arc evolution. But it is chemically inappropriate to call many of the rocks in island arcs calc-alkaline and they suggest they be known as the "island arc thoeitic series" and they differ from normal thoeiitic features by having a higher percentage of intermediate and acid members and too little normative olivine, for example, to have been in equilibrium with peridotite.