Characteristics and Sedimentary Environment of Thrombolite in the Zhangxia Formation (Third Series of Cambrian), Shandong Province
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摘要: 通过野外观察及显微镜下分析,对鲁西寒武系第三统张夏组的凝块石特征进行了详细研究。凝块石呈米级的生物丘和生物层状,其凝块大多为斑块状、树枝状和网状。形成凝块石的微生物主要是附枝菌,其次是葛万菌和放射状菌。通过沉积相分析及与之共生的岩相,初步确定了凝块石的形成环境——潮下低能带。Abstract: This paper has studied in detail the characteristics of thrombolite in the Zhangxia Formation (Third Series of Cambrian), Shandong Province. Thrombolite is bioherm and biostrome. And the clot of thrombolite is clotted dendritic and meshed. The microbes formed thrombolite are Epiphyton, Girvanella and Actinophycus. Based on the analysis of sedimentary facies and paragenesis lithofacies, the author initially determines sedimentary environment of Cambrian thrombolite in the west of Shandong Province is the low-energy subtidal zone.
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Key words:
- thrombolite /
- Epiphyton /
- sedimentary  /
- environment /
- Zhangxia Formation /
- Third Series of Cambrian
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