Generation of a potassic to ultrapotassic alkaline complex in a syn-collisional setting through flat subduction: Constraints on magma sources and processes (Otjimbingwe alkaline complex, Damara orogen, Namibia)
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DOI: 10.1016/j.gr.2020.01.004
Abstract: Abstract The ~545 Ma-old syn-collisional Otjimbingwe alkaline complex is composed of pyroxene-amphibole-biotite-bearing, mildly nepheline-normative to quartz-normative rocks ranging in composition from monzogabbro to monzonite, syenite and granite. The alkaline rocks have moderate to high SiO2 (50.5–73.0 wt%)… read more here.
Keywords: otjimbingwe alkaline; subduction; alkaline; syn collisional ... See more keywords
Syn-collisional felsic magmatism and continental crust growth: A case study from the North Qilian Orogenic Belt at the northern margin of the Tibetan Plateau
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DOI: 10.1016/j.lithos.2018.03.001
Abstract: Abstract The abundant syn-collisional granitoids produced and preserved at the northern Tibetan Plateau margin provide a prime case for studying the felsic magmatism as well as continental crust growth in response to continental collision. Here… read more here.
Keywords: continental crust; crust; magmatism; syn collisional ... See more keywords
Provenance of passive-margin and syn-collisional units: Implications for the geodynamic evolution of the Southern Brasília Orogen, West Gondwana
Sign Up to like & getrecommendations! Published in 2020 at "Sedimentary Geology"
DOI: 10.1016/j.sedgeo.2020.105823
Abstract: Abstract Collisional orogens are one of the most conspicuous features of plate tectonics on Earth. They record the dynamics of continent-continent amalgamation, often confined to linear deformational belts. The Southern Brasilia Orogen is one of… read more here.
Keywords: provenance passive; paleocontinent; west gondwana; syn collisional ... See more keywords
Oblique continental collision and the formation of syn-collisional A-type granites: insights from the Early Jurassic Baoji granite suite in the Qinling orogenic belt, central China
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DOI: 10.1080/00206814.2020.1868356
Abstract: A-type granites are conventionally interpreted to be formed in late post-collisional or anorogenic settings. However, we firstly identified an Early Jurassic syn-collisional A-type granite suite in... read more here.
Keywords: granite suite; type granites; syn collisional; collisional type ... See more keywords
Mineral Compositions of Syn-collisional Granitoids and their Implications for the Formation of Juvenile Continental Crust and Adakitic Magmatism
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DOI: 10.1093/petrology/egaa038
Abstract: Continental collision zones have been proposed as primary sites of net continental crustal growth. Therefore, studies on syn-collisional granitoids with mafic magmatic enclaves (MMEs) are essential for testing this hypothesis. The Baojishan (BJS) and Qumushan… read more here.
Keywords: continental crust; juvenile continental; collisional granitoids; syn collisional ... See more keywords
Paleocene (c. 62 Ma) Leucogranites in Southern Lhasa, Tibet: Products of Syn-collisional Crustal Anatexis during Slab Roll-back?
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DOI: 10.1093/petrology/egy001
Abstract: Voluminous peraluminous leucogranites are common in large-scale orogenic belts and are crucial in gaining a fuller understanding of the related geodynamic process. However, the origin of such syn-collisional leucogranites remains highly controversial. In this contribution,… read more here.
Keywords: biotite granites; roll back; paleocene; southern lhasa ... See more keywords