| 河北秦皇岛柳江盆地新元古界海绿石矿物特征与形成环境研究——以鸡冠山长龙山组为例 |
| |
| 关键词:glauconite Jiguanshan Changlongshan Formation sedimentary environment |
| 基金项目:河北柳江盆地地质遗迹国家级自然保护区“柳江盆地野外地质实习资源开发;整合与管理项目”(编号: 冀林草发[2019]43号) |
|
| 摘要点击次数: 1749 |
| 全文下载次数: 1600 |
| 摘要: |
| Mineral Characteristics and Formation Environment of Glauconite in Upper Archean of Liujiang Basin, Qinhuangdao, Hebei Province:A Case Study of Changlongshan Formation in Jiguanshan |
| Glauconite is found in the quartz sandstone of Upper Archean Qingkoubai Changlongshan Formation in Jiguanshan, Liujiang Basin, Qinhuangdao, Hebei Province. The analysis of the macroscopic characteristics of glauconite showed that the glauconite content in sandstone increases with the decrease in particle diameter, and the content is mostly 5%–20%. Based on field outcrop surveys, rock section microscopy observations, and sample scanning electron microscopy observations, the microscopic characteristics of glauconite in Changlongshan was determined to be mostly halo-edged and granular, although other forms were also observed. It is considered that the glauconite in this area belongs to low-mature quasi autochthographical glauconite in layers. The glauconite in Jiguanshan of Liujiang Basin is characterized by weak reduction, and its formation environment is a shallow water environment with weak hydrodynamic force, and its sediment supply and sedimentation are slow, which is similar to the modern glauconite sedimentary environment. The discovery and study of glauconite in this area is of great significance for further study of sequence stratigraphic characteristics, stratigraphic framework, and regional stratigraphic correlation. |
| CHU Qing-zhong,YOU Zun-yan,LIN Jing-yu,ZHANG Hong-yuan,HAN Sen-wei,GAO Wen-long,M K HAMZA ISSA.2022.Mineral Characteristics and Formation Environment of Glauconite in Upper Archean of Liujiang Basin, Qinhuangdao, Hebei Province:A Case Study of Changlongshan Formation in Jiguanshan[J].Acta Geoscientica Sinica,43(1):25-37. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
|
|