Zircon U–Pb ages and Hf isotopes of I‐type granite from western Arunachal Himalaya, NE India: Implications for the continental arc magmatism in the Palaeoproterozoic supercontinent Columbia

2021 ◽  
Author(s):  
R. K. Bikramaditya ◽  
Sun‐Lin Chung ◽  
Athokpam Krishnakanta Singh ◽  
Hao‐Yang Lee ◽  
Leiphrakpam Lemba
Keyword(s):  
Hf Isotopes ◽  
Arc Magmatism ◽  
Ne India ◽  
Continental Arc ◽  
Type Granite ◽  
Arunachal Himalaya ◽  
Continental Arc Magmatism

Neoproterozoic continental arc magmatism in west-central Madagascar

Geology ◽  
1999 ◽  
Vol 27 (4) ◽  
pp. 351 ◽  
Author(s):  
Michael J. Handke ◽  
Robert D. Tucker ◽  
Lewis D. Ashwal
Keyword(s):  
Arc Magmatism ◽  
West Central ◽  
Continental Arc ◽  
Continental Arc Magmatism

scholarly journals Supplemental Material: Interplay of Cretaceous transpressional deformation and continental arc magmatism in a long-lived crustal boundary, central Fiordland, New Zealand

2020 ◽  
Author(s):  
H.J. Blatchford ◽  
et al.
Keyword(s):  
New Zealand ◽  
Cross Sections ◽  
Geochemical Data ◽  
Arc Magmatism ◽  
Sample Collection ◽  
Pb Isotope ◽  
Continental Arc ◽  
Geologic Map ◽  
Backscattered Electron ◽  
Continental Arc Magmatism

Analytical methods used are described in Supplemental Text. Sample collection locations shown in Figure 3 are detailed in Table S1. Isotopic and geochemical data are presented in Tables S2–S4. U-Pb isotope data and geochemistry data for the sample are presented in Tables S5 and S6, respectively. A series of cross sections and a geologic map of the study area including field stations and associated structural measurements are presented in Figure S1. Cathodoluminescence images of zircon grains are shown in Figures S2 and S3. Backscattered electron images of analyzed titanite grains are presented in Figure S4.<br>

Zircon U–Pb geochronology, mineral and whole‐rock geochemistry of the Khardung volcanics, Ladakh Himalaya, India: Implications for Late Cretaceous to Palaeogene continental arc magmatism

2019 ◽  
Vol 55 (5) ◽  
pp. 3297-3320 ◽  
Author(s):  
Nongmaithem Lakhan ◽  
Athokpam Krishnakanta Singh ◽  
Birendra Pratap Singh ◽  
Koushik Sen ◽  
Mutum Rajanikanta Singh ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Arc Magmatism ◽  
Continental Arc ◽  
Ladakh Himalaya ◽  
Continental Arc Magmatism

Characteristics of Jurassic Continental Arc Magmatism in South Korea: Tectonic Implications

2010 ◽  
Vol 118 (3) ◽  
pp. 305-323 ◽  
Author(s):  
Weon‐Seo Kee ◽  
Sung Won Kim ◽  
Youn‐Joong Jeong ◽  
Sanghoon Kwon
Keyword(s):  
South Korea ◽  
Arc Magmatism ◽  
Tectonic Implications ◽  
Continental Arc ◽  
Continental Arc Magmatism

scholarly journals Quickening the Pulse: Fractal Tempos in Continental Arc Magmatism

Elements ◽  
2015 ◽  
Vol 11 (2) ◽  
pp. 113-118 ◽  
Author(s):  
S. L. de Silva ◽  
N. R. Riggs ◽  
A. P. Barth
Keyword(s):  
Arc Magmatism ◽  
Continental Arc ◽  
Continental Arc Magmatism

scholarly journals Petrology of dioritic, tonalitic and trondhjemitic gneisses from Encantadas Complex, Santana da Boa Vista, southernmost Brazil: paleoproterozoic continental-arc magmatism

2008 ◽  
Vol 80 (4) ◽  
pp. 735-748 ◽  
Author(s):  
Ruy P. Philipp ◽  
Marcelo Lusa ◽  
Lauro V.S. Nardi
Keyword(s):  
The Other ◽  
Arc Magmatism ◽  
Trace Element Data ◽  
Calc Alkaline ◽  
Zircon Age ◽  
Mafic Rocks ◽  
Geochemical Parameters ◽  
Continental Arc ◽  
Basaltic Magmas ◽  
Continental Arc Magmatism

The Encantadas Complex is a unit composed of dioritic, tonalitic and trondhjemitic gneisses with minor hornblendite. This complex is intruded by granites of Neoproterozoic age. Major and trace element data indicate metaluminous to slightly peraluminous composition related to the medium-K calc-alkaline series. Compositional parameters are consistent with a common evolution from less differentiated magmas, probably through fractional crystallization. The orthogneisses show LaN/YbN ratios from 10 to 50, K2O/Na2O varying from 1.1 to 3.0, Y contents from 3 to 39 ppm, Yb from 0.3 to 3.7, and Lu with contents in the range 0.06 and 0.54 ppm. Such geochemical features are similar to those of Archaean tonalitic rocks and are usually described in rocks formed by partial melting of mafic rocks under high-pressure conditions leaving an eclogitic residue. The presence of diorites and hornblendites, associated to tonalitic and trondhjemitic gneisses suggests, on the other hand, that tonalitic magmas could be formed by hornblende-controlled fractionation of hydrous basaltic magmas. Tonalitic gneisses show U-PbSHRIMP zircon age of 2, 263 ± 6 Ma for igneous crystallization and 2, 045 ± 10 Ma for the metamorphism. The geochemical parameters, tectonic and geochronological features of Encantadas Complex are consistent with magmas derived from mantle metasomatized by subduction-related fluids in a continental-arc.

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