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| 化石群落与层序地层的耦合关系研究——以塔里木盆地西部中新生代有孔虫群落与层序地层关系研究为例 | |
| 引用本文： | 郭宪璞,彭阳,丁孝忠.化石群落与层序地层的耦合关系研究——以塔里木盆地西部中新生代有孔虫群落与层序地层关系研究为例[J].地质通报,2002,21(7). |
| 作者姓名： | 郭宪璞 彭阳 丁孝忠 |
| 作者单位： | 1. 中国地质科学院地质研究所,北京,100037 2. 中国地质科学院地质研究所,北京,100037;北京大学地球与空间科学学院,北京,100871 3. 中国地质科学院地质研究所,北京,100037;中国地质大学能源地质系,北京,100083 |
| 基金项目： | 国家“九五”重点科技攻关项目二级专题(编号:96-111-02-01-01及99-111-01-01-07)成果之一。 |
| 摘 要： | 本文研究的是大陆边缘海以底栖有孔虫为主的化石群落与层序地层的关系。海平面变化是控制化石群落演替和识别划分层序的主要因素。化石群落在一个完整海水进退旋回中呈机会种群落、平衡种群落、终极种群落演替变化,在化石丰度、多样度、均衡度、成壳类型等方面分异显著,与层序地层的三级层序的海进体系域、凝缩期沉积、高位体系域具有密切的耦合关系。化石群落的演替变化是对海洋环境变迁的能动反映。因此,化石群落的研究可以帮助识别和优化层序、沉积体系域和层序界面,从而为层序地层的准确识别划分提供新的思路。 |
| 关 键 词： | 化石群落 层序地层 耦合关系 |
Coupling relationships between fossil communities and sequence stratigra phy:A case study of the relationships between the Meso-Cenozoic foraminiferal community and sequence stratigraphy in the western part of the Tarim basin |
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| GUO Xianpu PENG Yang,DING Xiaozhong.Coupling relationships between fossil communities and sequence stratigra phy:A case study of the relationships between the Meso-Cenozoic foraminiferal community and sequence stratigraphy in the western part of the Tarim basin[J].Geologcal Bulletin OF China,2002,21(7). | |
| Authors: | GUO Xianpu PENG Yang DING Xiaozhong |
| Abstract: | The sea-level change is a key factor for controlling succession of fossil communities and recog-ni tion and division of sequence stratigraphic units.In a complete cycles of transgression and regression,fos-sil communities shows periodic change of succession of the opportunistic species community,equilibrium species community and ultimate species community.The abundance,diversity,equitability and shell type of fossils have close coupling relationships with the transgressive systems tract,deposits of the condensed inter-val and highstand systems tract of the third-order sequence of sequence stratigraphy.The succession and change of fossil communities are the reflection of the change of the marine environment.Therefore,the study of fossil communities may help recognize and optimize sequences,sedimentary systems tracts and se-quence boundaries,thus providing a new approach to the accurate recognition and division of sequence stratigraphic units. |
| Keywords: | fossil community sequence stratigraphy coupling relationship |
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