Journal ArticleDOI
Rare earth elements and the island arc tholeiitic series
P. Jakesˇ,James B. Gill +1 more
TLDR
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.About:
This article is published in Earth and Planetary Science Letters.The article was published on 1970-08-01. It has received 455 citations till now. The article focuses on the topics: Island arc & Peridotite.read more
Citations
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Geochemistry of eocene calc-alkaline volcanic rocks from the Kastamonu area, Northern Turkey
TL;DR: In this paper, the Pontic eocene volcanic rocks cropping out in the Kastamonu area, Pontic chain of Northern Turkey were analyzed and the SiO2% versus K2O% relationship showed that the analyzed samples belong to two major groups: the basaltic andesitic and the andesite ones.
Journal ArticleDOI
Tectonic setting of basic volcanic rocks determined using trace element analyses
Julian A. Pearce,J.R. Cann +1 more
TL;DR: 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.
Journal ArticleDOI
Boundary lines within petrologic diagrams which use oxides of major and minor elements
TL;DR: In this paper, the authors used petrologic diagrams applied to analyses of volcanic rocks for construction of discriminant lines between rock series and provided coordinates for sufficient points to enable accurate plotting of the boundary lines within seven diagrams, viz.
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Magma type and tectonic setting discrimination using immobile elements
TL;DR: In this paper, five minor and trace elements have been variously combined to produce a set of binary diagrams in addition to total alkali-SiO2 diagrams, that discriminate between fresh tholeiitic and alkali basalts.
Journal ArticleDOI
Experimental melting studies on a model upper mantle composition at high pressure under water-saturated and water-undersaturated conditions
TL;DR: The solidus of a model pyrolite composition is sensitively dependent on water content and has been determined experimentally up to 40 kb, for water-saturated (6% H2O) and water-underwater (0.2%) conditions.
References
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Diorites from the Mid-Atlantic Ridge at 45°N
TL;DR: Diorites associated with basalts, basalt breccias, and serpentinized peridotites occur in situ on the faulted scarps of two seamounts from the western High Fractured Plateau of the Mid-Atlantic Ridge at 45°N as discussed by the authors.
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Lead isotopes in volcanic rocks and possible ocean-floor thrusting beneath island arcs
TL;DR: The isotopic composition of lead in the Japanese primary basalts gradually decreases in radiogenic character in a transverse from the Pacific Ocean side to the Japan Sea side, whereas the observed 238U204Pb and 232Th 204Pb ratios in the basalts increase in the same direction.
Journal ArticleDOI
Peridotite-Gabbro Complexes as Keys to Petrology of Mid-Oceanic Ridges
TL;DR: Two suites of olivine-rich ultramafic and feldspathic rocks appear to be present in the mid-Atlantic Ridge: one which seems to have alkalic affinities, and one similar to the chromitite-bearing alpine peridotite-gabbro complexes.
Journal ArticleDOI
Experimental data for the system MgO-FeO-Fe 2 O 3 -CaAl 2 Si 2 O 8 -SiO 2 and their petrologic implications
P. L. Roeder,E. F. Osborn +1 more
TL;DR: In this paper, anorthite was added to the four component system MgO-FeO-SiO 3 -SiO 2 investigated by Osborn, 1959, which represented the end result of fractional crystallization of basalt-like liquids in the system.
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Tectonic setting of basic volcanic rocks determined using trace element analyses
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