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华南奥陶纪生物礁主要分布于三个层位 ,选择了数个生物礁实例分析当时的古地理格局对礁相地层时空分布的控制作用。涉及到的生物礁赋存层位自下而上为 :特马道克晚期扬子地台中部宜昌分乡组和同时代的扬子地台南缘皖南的仑山组 ;阿伦尼克早期分布于地台中部至南缘的红花园组 ;阿什吉尔中期浙赣边区下镇组和三衢山组。研究结果表明 ,礁相地层的的发育与否及其生物和沉积结构在时空上表现出的分异 ,明显受控于与古地理背景的变迁相关的诸多因素 ,如海平面升降、碳酸盐岩台地的规模以及沉积区间的抬升等
The Ordovician bio-reefs in South China are mainly distributed in three layers. Several bio-reefs were selected as examples to analyze the controlling effects of the then paleoclimate pattern on the spatial-temporal distribution of reef-facies formations. Reefs involved in the reservoir layer from bottom to top: Tema Dokkor Yangtze Plateau late Yichang sub-village group and the same period the southern edge of the Yangtze Plateau Lunnan group in southern Anhui; Alejnick early distribution in the central platform To the southern margin of the Red Garden group; Ashgir middle-Zhejiang-Jiangxi border area under the town group and three Qushan group. The results show that the development of the reef facies stratigraphy and its biological and sedimentary structures in space-time showed the differentiation is obviously controlled by changes in palaeogeography background related to many factors such as sea level rise and fall, carbonate The size of the rock platform and the uplifting of the sedimentary interval