کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6440405 | 1638649 | 2016 | 51 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
I-type granitoids associated with the early Paleozoic intracontinental orogenic collapse along pre-existing block boundary in South China
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
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چکیده انگلیسی
The block boundary between the eastern Yangtze and Cathaysia blocks should pass through the nearby west area (i.e., Pingxiang City) of the Zhangjiafang pluton. The Early Paleozoic I-type granitic rocks near the block boundary have all negative εNd(t) and εHf(t) values, demonstrating an overall ancient basement of the two blocks prior to the Wuyi-Yunkai orogeny, preferring an intracontinental orogeny model. However, the early Paleozoic mafic rocks and I-type granites with coeval MMEs were frequently present along the Jiangshan-Shaoxing-Pingxiang Fault zone, illustrating widespread modification of the ancient basement adjacent to the block boundary by mantle-derived melt during the orogenic collapse. The pre-existing block boundary might have promoted asthenosphere upwelling and basaltic underplating during the intracontinental orogenic collapse.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Lithos - Volumes 248â251, April 2016, Pages 353-365
Journal: Lithos - Volumes 248â251, April 2016, Pages 353-365
نویسندگان
Yang Yu, Xiao-Long Huang, Peng-Li He, Jie Li,