Macro- and microfeatures of Early Cambrian dolomitic microbialites from Tarim Basin, China
文献类型：期刊论文
| 作者 | Li,Ying1,2,3; Jiang,Hong-Xia4; Wu,Ya-Sheng1,2,3; Pan,Wen-Qing5; Zhang,Bao-Shou5; Sun,Chong-Hao5; Yang,Guo5 |
| 刊名 | Journal of Palaeogeography
 |
| 出版日期 | 2021-01-13 |
| 卷号 | 10期号:1 |
| 关键词 | Cambrian Microbialite Thrombolite Fabrics Laminite |
| DOI | 10.1186/s42501-020-00082-w |
| 英文摘要 | AbstractThe fabrics of microbialites preserved in limestones are generally better than in dolostones. What are the fabrics of the microbialites preserved in heavily dolomitized dolostones? This paper presents an example of a strongly dolomitized Cambrian microbialite profile. The Xiaoerblak Formation (Cambrian Series 2 Stage 3 and lower Stage 4) of the Sugaitblak section in Aksu, Xinjiang Uygur Autonomous Region, China is mainly composed of microbial dolostones. Due to strong alteration by diagenesis, their features, formation and environments have not been fully understood. Here, based on detailed observation on outcrops and thin sections, we show that this formation comprises four kinds of microbialites: laminite, thrombolite, thrombolitic laminite, and Renalcis framestone, in five intervals (Interval I to Interval V). We identified three main types of microbialite fabrics, i.e., clotted fabric, laminated fabric and skeletal fabric, and established a high-resolution vertical evolution sequence of the microbialites. The clotted fabric and the laminated fabric were further divided into subtypes. We found that the original fabrics were mainly affected by dolomitization, recrystallization and dissolution, and the alteration degree of the microbialite fabric is stronger in the lower part of this formation. The laminated fabric has the strongest resistance to diagenesis, followed by the clotted fabric. Based on studies of different rock types and sedimentary structures, we concluded that the sedimentary environment of Xiaoerblak Formation consists of three settings: a) Intervals I to III formed in restricted tidal flat environments, b) Interval IV and the lower part of Interval V in restricted deep subtidal environments, and c) upper part of Interval V in shallowing-up?open subtidal environments. |
| 语种 | 英语 |
| WOS记录号 | BMC:10.1186/S42501-020-00082-W |
| 出版者 | Springer Singapore |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/98767]  |
| 专题 | 地质与地球物理研究所_中国科学院新生代地质与环境重点实验室 |
| 通讯作者 | Jiang,Hong-Xia; Wu,Ya-Sheng |
| 作者单位 | 1.University of Chinese Academy of Sciences 2.Chinese Academy of Sciences; Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics 3.Chinese Academy of Sciences; Innovation Academy for Earth Science 4.Hebei GEO University 5.Tarim Oilfield Company; Research Institute of Petroleum Exploration and Development |
| 推荐引用方式 GB/T 7714 | Li,Ying,Jiang,Hong-Xia,Wu,Ya-Sheng,et al. Macro- and microfeatures of Early Cambrian dolomitic microbialites from Tarim Basin, China[J]. Journal of Palaeogeography,2021,10(1). |
| APA | Li,Ying.,Jiang,Hong-Xia.,Wu,Ya-Sheng.,Pan,Wen-Qing.,Zhang,Bao-Shou.,...&Yang,Guo.(2021).Macro- and microfeatures of Early Cambrian dolomitic microbialites from Tarim Basin, China.Journal of Palaeogeography,10(1). |
| MLA | Li,Ying,et al."Macro- and microfeatures of Early Cambrian dolomitic microbialites from Tarim Basin, China".Journal of Palaeogeography 10.1(2021). |
入库方式： OAI收割
来源：地质与地球物理研究所
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