2008
DOI: 10.1007/s11434-008-0558-0
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Paleoproterozoic mafic dyke from Kongling terrain in the Yangtze Craton and its implication

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Cited by 138 publications
(62 citation statements)
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“…Conversely, the orogenic events related to the amalgamation of the Columbia supercontinent took place at 2.0-1.9 Ga, just before the formation time of Huashanguan rapakivi granite intrusions. In addition, the formation time of mafic dikes, marking regional extension found in the Kongling high-grade metamorphic terrain, also were about 1.85 Ga [37]. Besides, the formation age of the Quanyishang A-type granites recently reported is about 1.85 Ga. Zircon Hf isotopic studies show that the source of Quanyishang A-type granites may come from the Archean crust deep in the Yangtze continent, and that this source may be related to the extension and collapse of the deep crust with Archean ages, in response to the transition stage of the assembly and breakup of the Columbia supercontinent [36].…”
Section: Tectonic Significance Of Paleoproterozoic Rapakivi Granites mentioning
confidence: 92%
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“…Conversely, the orogenic events related to the amalgamation of the Columbia supercontinent took place at 2.0-1.9 Ga, just before the formation time of Huashanguan rapakivi granite intrusions. In addition, the formation time of mafic dikes, marking regional extension found in the Kongling high-grade metamorphic terrain, also were about 1.85 Ga [37]. Besides, the formation age of the Quanyishang A-type granites recently reported is about 1.85 Ga. Zircon Hf isotopic studies show that the source of Quanyishang A-type granites may come from the Archean crust deep in the Yangtze continent, and that this source may be related to the extension and collapse of the deep crust with Archean ages, in response to the transition stage of the assembly and breakup of the Columbia supercontinent [36].…”
Section: Tectonic Significance Of Paleoproterozoic Rapakivi Granites mentioning
confidence: 92%
“…Although we have not found the equivalent of AMCG assemblages in this district yet, there is evidence of contemporary mafic magmatic activity near the Huashanguan rapakivi granites. For example, Peng et al [37] found contemporary (~1.85 Ga) mafic dikes in the Kongling high-grade metamorphic terrain, not far from the Huashanguan rapakivi pluton in the Yangtze block. This finding indicates the existence of bimodal magmatic associations.…”
Section: Rapakivi Texturesmentioning
confidence: 99%
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“…Archean and Paleoproterozoic rocks were only previously known in the northern part of the Yangtze Block. They comprisẽ 2.9 Ga tonalitic-trondhjemitic-granitic gneisses, which underwent granulite facies metamorphism during the period of 2.03 to 1.97 Ga (Zhang et al 2006;Wu et al 2008) and were intruded by A-type granites and mafic dykes at~1.85 Ga (Peng et al 2009;Xiong et al 2009). These Paleoproterozoic metamorphic and magmatic events have been linked to the assembly and breakup of the Columbia supercontinent (Zhang et al 2006;Sun et al 2008;Wu et al 2008).…”
Section: Geological Backgroundmentioning
confidence: 99%
“…In the traditional reconstruction models (Rogers and Santosh 2002;Zhao et al 2002), the Yangtze Block is not included in the Columbia supercontinent, due to the lack of geological and geochronological data for that time. However, recent studies reveal that the Yangtze Block may have been involved in this global Paleoproterozoic orogenic event (Zhang et al 2006;Sun et al 2008;Wu et al 2008;Peng et al 2009;Zhao et al 2010). For example, the 2.05-1.9 Ga magmatism and granulitic metamorphism in the northern Yangtze Block have been interpreted to be a response of the assembly of the Columbia supercontinent (Zhang et al 2006;Sun et al 2008;Wu et al 2008).…”
Section: Possible Link To the Columbia Supercontinentmentioning
confidence: 99%