• 责任者：Shen Baojian (Department of Earth Sciences ; Nanjing University ; Nanjing 210093 ; China) ; Qin Jianzhong
• 刊名：Geological Journal of China Universities
• 出版年：2009
• 卷期：15(4)
• 关键词：气藏 ; gas reservoirs ; 惰性气体 ; noble gases ; 济阳坳陷 ; Jiyang Depression
• 页码：p.537-546
• 图表：3 illus., 4 tables, 19 refs.
• 分类号：1003
• issnNo：ISSN1006-7493
• isbnNo：CN32-1440/P

style="MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto" class=MsoNormal>style="FONT-SIZE: 14pt; mso-font-kerning: 0pt" lang=EN-US>s New Roman">In the surroundings of the Gaoqing-Pingnan fault zone five CO₂ gas reservoirs are developed. Based on the data on compositions, isotope geochemistry and CO₂/³He of the reservoirs, it is shown that CO₂ distributed in the Gaoqing area was mostly originated from the mantle-sourced inorganic material associated with magmatic rocks. The He/⁴He ratios range in 2. 02 3 ×10^-6style="FONT-FAMILY: 宋体; FONT-SIZE: 14pt; mso-font-kerning: 0pt; mso-ascii-font-family: ’Times New Roman’">～style="FONT-SIZE: 14pt; mso-font-kerning: 0pt" lang=EN-US>s New Roman">8. 34×10^-6 and Ar/³⁶Ar ratios range in 628. 9style="FONT-FAMILY: 宋体; FONT-SIZE: 14pt; mso-font-kerning: 0pt; mso-ascii-font-family: ’Times New Roman’">～style="FONT-SIZE: 14pt; mso-font-kerning: 0pt" lang=EN-US>s New Roman">3178. Its formation mechanism can be interpreted as follows: During the magma rising, the pressure and temperature would decrease, the magma composition would change, and the solubility of CO₂ and noble gases in magma would also decrease. Consequently, the CO₂ and noble gases could be separated from the magma, and large amount of CO₂ and rare gases could be transported to the various stratigraphic traps along the deep faults and some second-and third-order faults. space prefix = o ns = "urn:schemas-microsoft-com:office:office" />