| 川黔上古生界锶同位素演化曲线的地层学意义 |
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| 引用本文： | 石和,黄思静,沈立成,张萌.川黔上古生界锶同位素演化曲线的地层学意义[J].地层学杂志,2002,26(2):106-110. |
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| 作者姓名： | 石和 黄思静 沈立成 张萌 |
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| 作者单位： | 1. 成都理工大学,四川成都,610059
2. 油气藏地质及开发工程国家重点实验室,四川成都,610059 |
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| 基金项目： | 国家自然科学基金项目“上扬子古生代海相碳酸盐的锶同位
素组成及主要控制因素”(批准号 :No.49972 0 44) |
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| 摘 要： | 锶同位素地层学的研究表明海水中的锶同位素组成主要受地质历史中全球性海平面升降、板块活动、海底扩张等因素控制。根据川黔地区海相上古生界未经蚀变的 92个样品的锶同位素测试数据 ,建立了该地区晚古生代锶同位素组成曲线。川黔地区晚古生代锶同位素曲线与国外学者公布的同时代锶同位素曲线特征极为相似 ,显示了在地层学上的重要意义。同时根据锶同位素演化曲线讨论了川黔地区上古生界的地层划分、对比和全球性海平面变化与地区性海进海退的关系。
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| 关 键 词： | 锶同位素地层学 川黔地区 上古生界 锶同位素曲线 划分对比 全球海平面变化 |
| 文章编号： | 0253-4959(2002)02-0106-05 |
| 修稿时间： | 2001年10月27日 |
STRATIGRAPHICAL SIGNIFICANCE OF THE STRONTIUM ISOTOPIC CURVE OF THE UPPER PALEOZOIC OF SICHUAN AND GUIZHOU |
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| SHI He ,HUANG Si jing ,SHEN Li cheng ,and ZHANG Meng.STRATIGRAPHICAL SIGNIFICANCE OF THE STRONTIUM ISOTOPIC CURVE OF THE UPPER PALEOZOIC OF SICHUAN AND GUIZHOU[J].Journal of Stratigraphy,2002,26(2):106-110. |
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| Authors: | SHI He HUANG Si jing SHEN Li cheng and ZHANG Meng |
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| Institution: | SHI He 1),HUANG Si jing 2),SHEN Li cheng 2),and ZHANG Meng 2) |
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| Abstract: | The variation of the strontium isotopic composition in seawater during the geological history was mainly controlled by these factors such as the global variation of the sea level, the plate interaction and the seafloor spreading. This paper sets up a curve of the strontium isotopic composition of the Late Paleozoic based on 92 unaltered marine carbonate samples collected from Sichuan and Guizhou. The fairly high similarity between this curve and other coeval curves sets up by some foreign scholars in other regions abroad, exhibits important stratigraphical significance. This paper discussed the division and correlation of the Upper Paleozoic Strata of Sichuan and Guizhou, the relationship between global variation of the sea level and local transgression regression, based on the strontium isotope curve of the Upper Paleozoic Strata of Sichuan and Guizhou. |
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| Keywords: | strontium isotope stratigraphy Sichuan Guizhou Upper Paleozoic strontium isotope curve division and corrrelation global variation of the sea level |
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