| 海相碳酸盐岩碳同位素地层学研究中存在的问题及建议——以二叠系研究为例 |
| |
| 引用本文： | 王伟,陈孝政,刘欣春,曹长群,叶法丞,王玥,刘静.海相碳酸盐岩碳同位素地层学研究中存在的问题及建议——以二叠系研究为例[J].地层学杂志,2011(3):305-320. |
| |
| 作者姓名： | 王伟 陈孝政 刘欣春 曹长群 叶法丞 王玥 刘静 |
| |
| 作者单位： | 中国科学院南京地质古生物研究所; |
| |
| 基金项目： | 国家自然科学基金项目(NSFC); 中国科学院方向性项目的支持 |
| |
| 摘 要： | 以二叠系碳同位素地层学研究为例,在有条件控制的实验模拟基础上发现：1）采集到的地质样品一般都是不同碳酸盐矿物的混合样品,这些不同碳酸盐矿物具有不同的碳氧同位素比值（δ13C和δ18O）;2）自然露头和采石场剖面样品的无机碳氧稳定同位素组成会在可预见的时间内发生足以影响研究结果的淋滤交代作用;3）利用地层中碳酸盐样品的δ...
|
| 关 键 词： | 同位素地层学 碳同位素 地层划分与对比 实验模拟 淋滤交代作用 二叠系 中国 |
PROBLEMS AND PROSPECTS OF CARBON ISOTOPIC STRATIGRAPHY OF MARINE CARBONATES: EXAMPLES FROM THE PERMIAN SYSTEM |
| |
| WANG Wei,CHEN Xiao-zheng,LIU Xin-chun,CAO Chang-qun,YE Fa-cheng,WANG Yue , LIU Jing Nanjing Institute of Geology , Palaeontology,Chinese Academy of Sciences,Nanjing.PROBLEMS AND PROSPECTS OF CARBON ISOTOPIC STRATIGRAPHY OF MARINE CARBONATES: EXAMPLES FROM THE PERMIAN SYSTEM[J].Journal of Stratigraphy,2011(3):305-320. |
| |
| Authors: | WANG Wei CHEN Xiao-zheng LIU Xin-chun CAO Chang-qun YE Fa-cheng WANG Yue LIU Jing Nanjing Institute of Geology Palaeontology Chinese Academy of Sciences Nanjing |
| |
| Institution: | WANG Wei,CHEN Xiao-zheng,LIU Xin-chun,CAO Chang-qun,YE Fa-cheng,WANG Yue and LIU Jing Nanjing Institute of Geology and Palaeontology,Chinese Academy of Sciences,Nanjing 210008 |
| |
| Abstract: | Laboratory controlled alteration and leaching simulation experiments and the authors’ empirical data from Permian isotopic chemostratigraphy indicated the following findings,1) nearly all kinds of geological sample for isotopic chemostratigraphic analysisy include a mixture of carbonate minerals,with different minerals having different isotopic fractionations and different δ13C and δ18O values;2) δ13C and δ18O values of carbonate samples collected from natural outcrops and fresh quarries show evidence leaching and alternation in the time scale of years;3) δ13C chemostratigraphic division and correlation is limited by facies control,,δ13C values of carbonate samples are controlled by deposition facies and/or carbonate mineral composition;4) detection of diagenetic alteration via δ13C vs δ18O crossplots has its limitation.To address these problems,this paper propose the following suggestions: 1) δ13C measurements should focus on a single carbonate mineral separated from carbonate rock;2) laboratory simulation of carbon isotopic alteration and leaching experiment should be used to screen samples and to identify least altered δ13C values.The authors also reviewed criticism of possibility of δ13C for worldwide stratigraphy correlation,and propose suggestions for carbon isotopic chemostratigraphy methods. |
| |
| Keywords: | chemostratigraphy δ13C stratigraphy division and correlation experimental simulation alteration and leaching limitation Permian China |
| 本文献已被 CNKI 等数据库收录！ |
|
