Trace elements in clinopyroxenes from Aleutian xenoliths: Implications for primitive subduction magmatism in an island arc

2007 ◽  
Vol 256 (3-4) ◽  
pp. 617-632 ◽  
Author(s):  
G.M. Yogodzinski ◽  
P.B. Kelemen
Keyword(s):  
Trace Elements ◽  
Island Arc ◽  
Subduction Magmatism

Geochemical patterns in Norwegian greenstones

1982 ◽  
Vol 19 (3) ◽  
pp. 385-397 ◽  
Author(s):  
G. H. Gale ◽  
J. A. Pearce
Keyword(s):  
Trace Elements ◽  
Rare Earth ◽  
Trace Element ◽  
Tectonic Setting ◽  
Major Elements ◽  
Island Arc ◽  
Ocean Floor ◽  
Spreading Axis ◽  
Southern Norway ◽  
Representative Samples

Representative samples of Caledonian greenstones from the Grong, Joma, Løkken, Støren, Stavenes, and Bømlo areas in central and southern Norway have been analysed for major elements and over 20 trace elements. Ocean-floor tholeiite-normalized trace-element patterns and chondrite-normalized rare-earth patterns both provide clues to the genesis, original tectonic setting, petrologic character, and effects of alteration of these greenstones. We conclude that the Støren, Stavenes, and Løkken greenstones were generated at spreading axes within the Caledonian ocean, the Grong and possibly the Bømlo submarine greenstones were erupted in an island-arc system, and the Joma and Bømlo subaerial greenstones were erupted in a within-plate setting. The Løkken greenstones may have been generated in a marginal basin, whereas those from Støren and Stavenes were probably generated at a rapidly spreading axis in a major ocean.

Trace elements and tectonic relationships of basaltic rocks in the Ballantrae igneous complex, Ayrshire

1974 ◽  
Vol 111 (1) ◽  
pp. 35-41 ◽  
Author(s):  
J. M. Wilkinson ◽  
J. R. Cann
Keyword(s):  
Trace Elements ◽  
Subduction Zone ◽  
Oceanic Crust ◽  
Hot Spot ◽  
Island Arc ◽  
Igneous Complex ◽  
Basaltic Rocks ◽  
Genetic Groups ◽  
Tectonic Environment ◽  
Low Potassium

SummaryIn order to obtain further evidence for the tectonic environment of generation of the basaltic rocks of the Ballantrae igneous complex, specimens of pillow lavas, dolerites, glaucophane schists and amphibolites were analysed for Ti, Zr, Y and Nb. Using Ti–Zr–Y, Ti–Zr and Y/Nb diagrams, three different genetic groups have been distinguished – (i) hot-spot basalts round Downan Point, round Bennane Head as far N as Balcreuchan Port, and also within serpentinite around Lendalfoot, (ii) island arc low-potassium tholeiites between Balcreuchan Port and Gamesloup, and (iii) possible ocean floor basalts at Knockormal and Knocklaugh. The interrelationships of these groups are in doubt. The hot-spot basalts may have been erupted through oceanic crust, but they could have formed prior to, or subsequent to, the island arc activity. More likely, the hot-spot basalts formed (possibly on oceanic crust) at a considerable distance from the island arc, and the two were later brought together tectonically, probably at the subduction zone associated with the arc.

scholarly journals Petrology and geochemistry of metapelites from Asenitsa unit, Central Rhodope massif

2021 ◽  
Vol 82 (3) ◽  
pp. 55-57
Author(s):  
Milena Georgieva
Keyword(s):  
Trace Elements ◽  
Trace Element ◽  
Trace Element Composition ◽  
Element Composition ◽  
High Variability ◽  
Island Arc ◽  
Active Margin ◽  
Margin Setting ◽  
Bulk Chemical ◽  
Petrology And Geochemistry

Asenitsa unit metapelites (Central Rhodope massif) have a high variability in mineral, bulk chemical and trace element composition. Kyanite, staurolite and garnet are the major minerals in schists and show intensive retrograde change. Discrimination diagrams based on immobile trace elements indicate continental island arc or active margin setting of deposition.

scholarly journals Tipe Magmatik Batuan Beku Formasi Gabon di Tinggian Karangbolong, Kebumen

2019 ◽  
Vol 20 (2) ◽  
pp. 63
Author(s):  
Chusni Ansori ◽  
Fitriany A Wardhani
Keyword(s):  
Trace Elements ◽  
Major Element ◽  
Volcanic Rocks ◽  
Island Arc ◽  
Igneous Rocks ◽  
Petrographic Analysis ◽  
Mountain Range ◽  
Plate Margin ◽  
Tectonic Position ◽  
Light Rare Earth Elements

Karangbolong High located in Java Southern Mountain range is dominated by volcanic rocks of Gabon Formation in the form of volcanic breccia, some intrusion bodies and lavas. Research on the type of magma at Karangbolong high has never been done. This activity is intended to know the distribution, change the type of magma and tectonic position.This research includes field sampling and laboratory work which includes petrographic analysis using polarization microscope and geochemistry analysis 4 litho ICP-WRA for major element and ICP-WRA4B2 for trace elements and REE. Results of geochemistry analysis are.plot in Total Alkali Silica (TAS) diagrams, AFM diagram , SiO2 vs FeO(t) / MgO diagram, SiO2 Vs K2O and the spider diagram.for trace elements and REE.Most of the igneous rocks at Karangbolong Region are andesite pyroxene, basaltic andesite and slightly basalt olivine. To the northward, igneous rocks are tend to more acid as reflected by the increase of SiO2, Na2O and K2O and the decreasing of MgO and Fe2O3 content. The affinity of the magma in the northern part is mostly Calc-Alkaline series (KR-18, KR-28, KR-6, KR-23) and slightly Island Arc Tholeiite as intrusion and lava at southern part (KR-33 and KR- 17). The tectonic position of rock formation resides in Island Arc Plate Margin. The Calk-alkaline magma is enriched with the light rare earth elements (LREE) compared to the Tholeiite magma, while trace element Sr, K, Rb, Ba, and Th strongly enriched in.Keywords : Karangbolong High, igneous rock, magmatic type, tectonic position

scholarly journals Tipe Magmatik Batuan Beku Formasi Gabon di Tinggian Karangbolong, Kebumen

2019 ◽  
Vol 20 (2) ◽  
pp. 63
Author(s):  
Chusni Ansori ◽  
Fitriany A Wardhani
Keyword(s):  
Trace Elements ◽  
Major Element ◽  
Volcanic Rocks ◽  
Island Arc ◽  
Igneous Rocks ◽  
Petrographic Analysis ◽  
Mountain Range ◽  
Plate Margin ◽  
Tectonic Position ◽  
Light Rare Earth Elements

Karangbolong High located in Java Southern Mountain range is dominated by volcanic rocks of Gabon Formation in the form of volcanic breccia, some intrusion bodies and lavas. Research on the type of magma at Karangbolong high has never been done. This activity is intended to know the distribution, change the type of magma and tectonic position.This research includes field sampling and laboratory work which includes petrographic analysis using polarization microscope and geochemistry analysis 4 litho ICP-WRA for major element and ICP-WRA4B2 for trace elements and REE. Results of geochemistry analysis are.plot in Total Alkali Silica (TAS) diagrams, AFM diagram , SiO2 vs FeO(t) / MgO diagram, SiO2 Vs K2O and the spider diagram.for trace elements and REE.Most of the igneous rocks at Karangbolong Region are andesite pyroxene, basaltic andesite and slightly basalt olivine. To the northward, igneous rocks are tend to more acid as reflected by the increase of SiO2, Na2O and K2O and the decreasing of MgO and Fe2O3 content. The affinity of the magma in the northern part is mostly Calc-Alkaline series (KR-18, KR-28, KR-6, KR-23) and slightly Island Arc Tholeiite as intrusion and lava at southern part (KR-33 and KR- 17). The tectonic position of rock formation resides in Island Arc Plate Margin. The Calk-alkaline magma is enriched with the light rare earth elements (LREE) compared to the Tholeiite magma, while trace element Sr, K, Rb, Ba, and Th strongly enriched in.Keywords : Karangbolong High, igneous rock, magmatic type, tectonic position

scholarly journals Trace elements and Nd-Sr isotopes of island arc tholeiites from frontal arc of Northeast Japan.

1992 ◽  
Vol 26 (5) ◽  
pp. 261-277 ◽  
Author(s):  
Shigeko Togashi ◽  
Tsuyoshi Tanaka ◽  
Takeyoshi Yoshida ◽  
Ken-ichi Ishikawa ◽  
Akihiko Fujinawa ◽  
...  
Keyword(s):  
Trace Elements ◽  
Island Arc ◽  
Sr Isotopes

scholarly journals Tipe Magmatik Batuan Beku Formasi Gabon di Tinggian Karangbolong, Kebumen

2019 ◽  
Vol 20 (2) ◽  
pp. 63
Author(s):  
Chusni Ansori ◽  
Fitriany A Wardhani
Keyword(s):  
Trace Elements ◽  
Major Element ◽  
Volcanic Rocks ◽  
Island Arc ◽  
Igneous Rocks ◽  
Petrographic Analysis ◽  
Mountain Range ◽  
Plate Margin ◽  
Tectonic Position ◽  
Light Rare Earth Elements

Karangbolong High located in Java Southern Mountain range is dominated by volcanic rocks of Gabon Formation in the form of volcanic breccia, some intrusion bodies and lavas. Research on the type of magma at Karangbolong high has never been done. This activity is intended to know the distribution, change the type of magma and tectonic position.This research includes field sampling and laboratory work which includes petrographic analysis using polarization microscope and geochemistry analysis 4 litho ICP-WRA for major element and ICP-WRA4B2 for trace elements and REE. Results of geochemistry analysis are.plot in Total Alkali Silica (TAS) diagrams, AFM diagram , SiO2 vs FeO(t) / MgO diagram, SiO2 Vs K2O and the spider diagram.for trace elements and REE.Most of the igneous rocks at Karangbolong Region are andesite pyroxene, basaltic andesite and slightly basalt olivine. To the northward, igneous rocks are tend to more acid as reflected by the increase of SiO2, Na2O and K2O and the decreasing of MgO and Fe2O3 content. The affinity of the magma in the northern part is mostly Calc-Alkaline series (KR-18, KR-28, KR-6, KR-23) and slightly Island Arc Tholeiite as intrusion and lava at southern part (KR-33 and KR- 17). The tectonic position of rock formation resides in Island Arc Plate Margin. The Calk-alkaline magma is enriched with the light rare earth elements (LREE) compared to the Tholeiite magma, while trace element Sr, K, Rb, Ba, and Th strongly enriched in.Keywords : Karangbolong High, igneous rock, magmatic type, tectonic position

Geochemical Characteristics and Genesis Discussion with Rock Metallogenic Belt of Geza Island Arc, Yunnan

2014 ◽  
Vol 1073-1076 ◽  
pp. 2015-2018
Author(s):  
Xue Long Liu ◽  
Na Zhang ◽  
Peng Wang ◽  
Fu Cheng Yang
Keyword(s):  
Trace Elements ◽  
Volcanic Rocks ◽  
Island Arc ◽  
Source Rocks ◽  
Late Triassic ◽  
Type I ◽  
Metallogenic Belt ◽  
Type Granite ◽  
Arc Volcano ◽  
Granite Rocks

Geza island arc located in the southwest Sanjiang tectonic igneous rock belts which was a products of Ganzi-Litang oceanic crust diving to Zhongdian Landmasses in late Triassic. Lithogeochemical characteristics shown that the porphyry(porphyrite) and island-arc granite rocks have the same rock series (high-K calc-alkaline) and the same genetic type (I-type granite); these rocks trace elements similar to the granite of island arc,which enriched in Ba, La, Hf, Au,chalcophile elements Cu,Pb, siderophile elements Mo, Ni, and depleted in Rb, Nb, P, Ti. In this region, the similarities of porphyry and local acidic volcanic rocks in the main elements, REE and other trace elements and the composition suggest that they both have the same or similar magmatic source rocks. It is shown that the characteristics of the rock with the island arc granite partial melting of source rock, that may come from the arc type volcano rock or island arc volcano rock cognate magma evolution.

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