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| Sr、C同位素对苏皖北部上前寒武系时代的界定 | |
| 引用本文： | 杨杰东,郑文武,王宗哲,陶仙聪.Sr、C同位素对苏皖北部上前寒武系时代的界定[J].地层学杂志,2001,25(1):44-47. |
| 作者姓名： | 杨杰东 郑文武 王宗哲 陶仙聪 |
| 作者单位： | 1. 南京大学现代分析中心 2. 合肥工业大学资源与环境科学系 3. 中国科学院南京地质古生物研究所 |
| 基金项目： | 国家自然科学基金资助项目!(编号 :No.498730 0 4和 No. 49872 0 12 ) |
| 摘 要： | 对苏皖北部上前寒武系碳酸盐岩地层系统采集灰岩样品 ,采用弱酸处理方法测定清液部分的 Sr同位素组成 ,对全岩样品测定 C同位素组成。测定结果与 Shields(1999)发表的新元古代古海水 Sr、C同位素组成随时间的演化曲线对比表明 ,苏皖北部上前寒武系是跨越北方青白口系与南方震旦系之间的一段连续地层 ,其时代约从70 0 Ma到 85 0 Ma,该研究进一步印证了淮南生物群属于先伊迪卡拉期的学术观点。 |
| 关 键 词： | Sr和C同位素 江苏 安徽 上前寒武系 淮南生物群 |
| 文章编号： | 0253-4959(2001)01-0044-04 |
| 修稿时间： | 2000年4月17日 |
AGE DETERMINING OF THE UPPE PRECAMBRIAN SYSTEM OF NORTHERN JIANGSU-ANHUI BY USING Sr AND C ISOTOPES |
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| YANG Jie dong ,ZHENG Wen wu ,WANG Zong zhe and TAO Xian cong.AGE DETERMINING OF THE UPPE PRECAMBRIAN SYSTEM OF NORTHERN JIANGSU-ANHUI BY USING Sr AND C ISOTOPES[J].Journal of Stratigraphy,2001,25(1):44-47. | |
| Authors: | YANG Jie dong ZHENG Wen wu WANG Zong zhe and TAO Xian cong |
| Institution: | YANG Jie dong 1)2),ZHENG Wen wu 2),WANG Zong zhe 4) and TAO Xian cong 1) |
| Abstract: | The carbonate samples were systematically collected from the Upper Precambrian System of northern Jiangsu Anhui. The leachate was used for Sr isotopic analysis after acid leaching treatment and the whole rock samples for C isotopic analysis. Compared with evolution curve of Sr and C isotopes of the Neoproterozoic seawater presented by Shields (1999), the results show that the Upper Precambrian System of northern Jiangsu Anhui is a set of continuous strata between the Qingbaikou System in North China and the Sinian System in South China, ranging in age from 850 Ma to 700 Ma. This study further confirms the view——the Huainan biota belongs to the pre Ediacarian time. |
| Keywords: | Sr and C isotopes Jiangsu Anhui Upper Precambrian Huainan biota |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |