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Trace Element Discrimination Diagrams for the Tectonic Interpretation of Granitic Rocks
Granites may be subdivided according to their intrusive settings into four main groups—ocean ridge granites (ORG), volcanic arc granites (VAG), within plate granites (WPG) and collision granitesExpand
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Trace element characteristics of lavas from destructive plate boundaries
Volcanic are basalts are all characterized by a selective enrichment in incompatible elements of low ionic potential, a feature thought to be due to the input of aqueous fluids from subducted oceanicExpand
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Geochemical fingerprinting of oceanic basalts with applications to ophiolite classification and the search for Archean oceanic crust
Abstract Two geochemical proxies are particularly important for the identification and classification of oceanic basalts: the Th–Nb proxy for crustal input and hence for demonstrating an oceanic,Expand
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Role of the sub-continental lithosphere in magma genesis at active continental margins
Volcanic are basalts can usually be distinguished from basalts erupted in other settings by their selective enrichments in LIL elements and also, in some cases, in light rare-earth elements and P.Expand
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Tectonic Implications of the Composition of Volcanic Arc Magmas
Volcanic arc magmas can be defined tectonically as magmas erupting from volcanic edifices above subducting oceanic lithosphere. They form a coherent magma type, characterized compositionally byExpand
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Tectonic setting of basic volcanic rocks determined using trace element analyses
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. Basalts eruptedExpand
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Petrogenetic implications of Ti, Zr, Y, and Nb variations in volcanic rocks
Data from experimental runs, coexisting phases in ultramafic rocks and phenocryst-matrix pairs in volcanic rocks have been used to compile a table of mineral-liquid distribution coefficients for Ti,Expand
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Peridotites from the Izu-Bonin-Mariana Forearc (ODP Leg 125): Evidence for Mantle Melting and Melt-Mantle Interaction in a Supra-Subduction Zone Setting
Ocean Drilling Program Leg 125 recovered serpentinized harzburgites and dunites from a total of five sites on the crests and flanks of two serpentinite seamounts, Conical Seamount in the MarianaExpand
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Genesis of collision volcanism in Eastern Anatolia, Turkey
Late Cenozoic volcanism in Eastern Anatolia extends in a broad SW - NE trending belt across the Arabia - Eurasia collision zone, from the Arabian foreland basin in the southwest and to the KarsExpand
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Characteristics and tectonic significance of supra-subduction zone ophiolites
Summary Supra-subduction zone (SSZ) ophiolites have the geochemical characteristics of island arcs but the structure of oceanic crust and are thought to have formed by sea-floor spreading directlyExpand
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