Structural analysis of the Hasan-Robat marbles as traces of folded basement in the Sanandaj–Sirjan Zone, Iran

Geotectonics (2015)

Alireza Nadimi

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Keywords:

Basement

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Building materials and conservation

earthquake and tectonic studies

Masonry and Concrete Structural Analysis

10.1134/s0016852115060060

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Zircon LA-ICPMS U-Pb dating and geochemistry of basement granites from north Kunlun faults zone,western Qaidam Basin and their geological implications

Acta Petrologica Sinica (2014)

Liu Gui

Lots of granitoids occur in north Kunlun faults zone of western Qaidam Basin. Comprehensive petrology,laser ablation ICPMS zircon U-Pb geochronology( LA-ICPMS U-Pb) and geochemistry of drilling basement granites were carried out from north Kunlun faults zone,western Qaidam Basin. Zircon U-Pb isotopic ages of 467 ~ 450Ma,i. e. Middle-Late Ordovician,show the crystallization age of the basement granites which belong to the Caledonian magmatic cycles. Detailed geochemical analyses show that the basement granites are per-aluminous and high-K calc-alkaline series,characterized by obvious LREE enrichment with medium to strong negative Eu anomalies. These geochemical features indicate that the basement granites probably resulted from crustal remelting of syn-collision setting. There exist Middle Ordovician-Early Silurian Caledonian tectonic-magmatic events,which provide important information for the researches on magmatic and tectonic evolution in north Kunlun faults zone and its west.

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Comparative sedimentology of the principal volcanic sequences of Archean greenstone belts in South Africa, Western Australia and Canada: Implications for crustal evolution

Precambrian Research (1982)

Donald R. Lowe

Greenstone belt

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Breccia

10.1016/0301-9268(82)90151-6