Mantle-derived helium in foreland basins in Xinjiang, Northwest China

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• 作者：Sheng Xu^a ; ^b ; Guodong Zheng^a ; ^{gdzhbj@mail.iggcas.ac.cn} ; Jianjing Zheng^a ; Shixin Zhou^a ; Pilong Shi^c
• 关键词：Natural gas ; Mantle He ; Compression tectonics ; Foreland basin ; NW China
• 刊名：Tectonophysics
• 出版年：2017
• 出版时间：2 January 2017
• 年：2017
• 卷：694
• 期：Complete
• 页码：319-331
• 全文大小：2337 K
• 卷排序：694

文摘

We have measured 3He/4He of natural gases in 5 sedimentary basins in Xinjiang, NW China. As much as approximately 7% of the helium in the Xinjiang basins is mantle-derived. Mantle-derived helium in foreland sub-basins reflects the injection of mantle fluids beneath the orogenic mountains through thrust faults. Purely radiogenic helium occurs extensively in the center of individual sedimentary basins. The possible mantle-derived CO2 in Tarim basin is proposed.