| 泌阳断陷下第三系核三~上段陆相层序各体系域岩石地球化学旋回性特征 |
| |
| 引用本文： | 胡受权,张永贵,颜其彬.泌阳断陷下第三系核三~上段陆相层序各体系域岩石地球化学旋回性特征[J].地球与环境,1998(2). |
| |
| 作者姓名： | 胡受权 张永贵 颜其彬 |
| |
| 作者单位： | 西南石油学院!南充，637001 |
| |
| 摘 要： | 泌阳断陷下第三系核三上段可划分为三个陆相层序（S4、S5和S6）．每一层序自下而上发育TST、HST和RST三个体系域。对泌阳断陷下第三水核三上段S5层岸各体系域中几类岩石地球化学标型参数的研究发现，在S5层序形成时期，由于在一个旋回性变迁的古气候（古湿度和古温度）驱动下，湖平面发生了一次完整的旋回性变化；湖泊水体的物理化学条件（古盐度、古酸碱度、古氧化还原电位等）及物源性质亦随之发生一次旋回性变化：相应地，沉积岩中岩石类型、矿物成分（主要指粘土矿物和胶结物）、化学成分（包括常量元素和微量元素及水溶性离子等）以及碳、氧同位素等皆发生了一次旋回性变化。
|
| 关 键 词： | 泌阳断陷陆相层序 体系域 岩石地球化学 旋回性 |
LITHOLOGIC-GEOCHEMICAL CYCLICITY IN EVERY SYSTEM TRACT OF TERRIGENOUS SEQUENCE IN THE UPPER MEMBER OF Eh3 BIYANG FAULT DEPRESSION |
| |
| Hu Shouquan, Zhang Yonggui, Yan Qibin.LITHOLOGIC-GEOCHEMICAL CYCLICITY IN EVERY SYSTEM TRACT OF TERRIGENOUS SEQUENCE IN THE UPPER MEMBER OF Eh3 BIYANG FAULT DEPRESSION[J].Earth and Environment,1998(2). |
| |
| Authors: | Hu Shouquan Zhang Yonggui Yan Qibin |
| |
| Abstract: | The upper member of Eh3 in the Biyang fault depression can be classified as three terrigenous sequences,and each of them consists of TST, HST and RST. By studying litholoyic-geochemical typomorphic parameters of the upper member of Eh3 in the Biyang fault depression, it has bo found tha in pace of a cyclicity of palaeoclimate (including palaeohumidity and palaeotemperature) during the formattion period of sequence S5,lake-water physicochemical conditions (including palaeosalinity, pH, Eh, etc.) and sedimentary source features would undergo a cyclic chang, and along with this, the litholyical types of sedimentary rock, mineral composition (clay-mineral and cement), chemical consituents (including major element, trace element, watersoluble ion, etc. ) and C and O isotope would be cyclically changed. |
| |
| Keywords: | Biyang fault depression terrigenous sequence system tract lithologic-geochemistry cyclicity |
| 本文献已被 CNKI 等数据库收录！ |
|
