| 蓟县高于庄组臼齿构造形态特征及成因意义 |
| |
| 关键词:molar-tooth structure morphology origin Gaoyuzhuang Formation Jixian |
| 基金项目:国际地质对比计划IGCP447项目(编号: SC/GEO/546/447); 国家自然科学基金项目(编号: 40172043) |
|
| 摘要点击次数: 8842 |
| 全文下载次数: 8827 |
| 摘要: |
| Morphological Characteristics and Genesis of Molar-Tooth Structures in Gaoyuzhuang Formation of Jixian Area |
| Based on a detailed petrographic examination of MT structures from the Proterozoic Gaoyuzhuang Formation in Jixian, this paper made an interpretation of the microscale relationship between crack morphology and lithology as well as potential rheology and variability of the surrounding substrate by tracing the distribution of petrographically distinctive MT microspar. The results show that grain size, substrate lithology and substrate cohesion all played critical roles in the development of MT. In contrast, the presence of a wide range of MT morphologies within petrographically homogeneous substrates and the existence of an apparent relationship between crack diameter and sinuosity suggest that the void-forming process itself also played a role in determining the final morphology of MT. On such a basis, this paper discusses the significance of the molar structure in the analysis of the ancient marine environment. |
| LIU Zi-liang,MENG Xiang-hua,GE Ming,WANG De-hai,REN Guo-xuan.2011.Morphological Characteristics and Genesis of Molar-Tooth Structures in Gaoyuzhuang Formation of Jixian Area[J].Acta Geoscientica Sinica,32(1):27-36. |
| 查看全文 查看/发表评论 下载PDF阅读器 |