Geochemical discrimination of different magma series and their differentiation products using immobile elements
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TLDR
In this article, the abundance and distribution of selected minor and trace elements (Ti, Zr, Y, Nb, Ce, Ga and Sc) in fresh volcanic rocks can be used to classify the differentiation products of subalkaline and alkaline magma series in a similar manner to methods using normative or major-element indices.About:
This article is published in Chemical Geology.The article was published on 1977-01-01 and is currently open access. It has received 4648 citations till now. The article focuses on the topics: Volcanic rock & Magma.read more
Citations
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Trace element discrimination diagrams for the tectonic interpretation of granitic rocks
TL;DR: In this article, a data bank containing over 600 high quality trace element analyses of granites from known settings was used to demonstrate using ORG-normalized geochemical patterns and element-SiO2 plots that most of these granite groups exhibit distinctive trace element characteristics.
Journal ArticleDOI
Trace element characteristics of graywackes and tectonic setting discrimination of sedimentary basins
Mukul R. Bhatia,Keith A.W. Crook +1 more
TL;DR: In this article, a large variation in trace element characteristics of graywackes of the Paleozoic turbidite sequences of eastern Australia show a large increase in light rare earth elements (La, Ce, Nd), Th, Nb and the Ba/Sr, Rb, Sr, La/Y and Ni/Co ratios.
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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Petrogenesis of Adakitic Porphyries in an Extensional Tectonic Setting, Dexing, South China: Implications for the Genesis of Porphyry Copper Mineralization
Qiang Wang,Ji-Feng Xu,Ping Jian,Zhiwei Bao,Zhen-Huan Zhao,Chaofeng Li,Xiaolin Xiong,Jinlong Ma +7 more
TL;DR: The Dexing adakitic porphyries have a crystallization age of 171 ¼ 3 Ma, which is contemporaneous with Middle Jurassic extension within the Shi-Han rift zone, and within-plate magmatism elsewhere in South China, indicating that the Dexing porphyry were probably formed in an extensional tectonic regime in the interior of the continent rather than in an arc setting as mentioned in this paper.
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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
References
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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.
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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.
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Chemical Characteristics of Oceanic Basalts and the Upper Mantle
TL;DR: In this article, it was shown that oceanic tholeiites are either complete melts of the upper mantle or are generated from a mix of this tholeite and a magnesium-rich peridotite or dunite in proportions up to perhaps 1:4.
Journal ArticleDOI
Chemical Characteristics and Origin of Oceanic Ridge Volcanic Rocks
TL;DR: Oceanic ridge volcanic rocks alkali metal, alkaline earth, rare earth, nickel and major element content, observing partial melting as mentioned in this paper. But this is not the case for all volcanic rocks.
Journal ArticleDOI
Basalt geochemistry used to investigate past tectonic environments on Cyprus
TL;DR: In this paper, a study of the geochemical fingerprints of four geologically distinct suites of volcanic rocks on Cyprus are used to sketch a tectonic history of the island, and the results suggest formation of the Troodos Massif in the Campanian by spreading in an interarc basin followed by eruption of island-arc tholeiites.
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Trace element discrimination diagrams for the tectonic interpretation of granitic rocks
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