<P style="MARGIN: 0cm 0cm 0pt; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-outline-level: 2" class=MsoNormal>^{pt; mso-font-kerning: 18.0pt; mso-bidi-font-family: 宋体" lang=EN-US>40}pt; mso-font-kerning: 18.0pt; mso-bidi-font-family: 宋体" lang=EN-US>Ar/³⁹Ar Dating of the Guanshan High Sulphidation Type Cu-Pb-Au Deposit in pace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />place w:st="on">Jiangsu pe w:st="on">Provincepe>place> and Its Geological Significancepace prefix = o ns = "urn:schemas-microsoft-com:office:office" />p>p>

详细信息   

• 责任者：Liang Yeheng (School of Marine Sciences ; Sun Yat-Sen University ; Guangzhou 510275 ; China) ; Sun Xiaoming
• 刊名：Geological Journal of China Universities
• 出版年：2010
• 卷期：16(2)
• 关键词：金矿 ; gold ores ; 铜矿 ; copper ores ; 铅矿 ; lead ores ; 氩—氩计时 ; Ar-Ar dating ; 江苏 ; Jiangsu Province
• 页码：p.143-148
• 图表：5 illus., 2 tables, 13 refs.
• 分类号：1001
• issnNo：ISSN1006-7493
• isbnNo：CN32-1440/P

摘要

<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal>pt" lang=EN-US>Guanshan Cu-Pb-Au deposit in Lishui pace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />place w:st="on">pe w:st="on">basinpe> of Jiangsuplace> Province is a high sulphidation type epithermal deposit hosted in Late Mesozoic subvolcanic rocks. ⁴⁰Ar/³⁹Ar dating was performed on two sericite samples collected from sericitized subvolcanic wallrocks of Guanshan deposit. The results yield plateau ages of (120.8±1.0) Ma and (116.0±1.3) Ma, respectively, suggesting that the major mineralization of Guanshan belongs to the large-scale Mesozoic metallogenic event occurred in eastern place w:st="on">Chinaplace>. During 125 Ma to 115 Ma, most part of eastern place w:st="on">Chinaplace> was affected by extensional tectonic stress, resulting in large-scale magmatism and formed a series of fault-depressed basins, including the Lishui volcanic basin. pace prefix = o ns = "urn:schemas-microsoft-com:office:office" />p>p>