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花溪至青岩一带属贵阳市南郊(图1)。地处杨子地层区与右江地层区的接壤地带.地层变化大、相变显著。历来为地质界所瞩目.1939年李四光创建了青岩组,1943年许德佑、陈康在青岩采集并研究了化石90余种。解放后,石油地质八普、原北京地质学院和南京古生物研究所也作了一定的工作。特别是近年1 /20万区调以后,该区的地层划分、空间展布、岩相变化等作了大量的工作。笔者参加该区的1/5万区调工作中,对安尼锡克期地层的划分与对比以及岩相特征提出一点粗浅的认识。
Huaxi to Qingyan area is the southern suburbs of Guiyang (Figure 1). Located in the Yangzi strata area and the Youjiang stratigraphic zone bordering the formation of large changes, significant phase transition. Has always been the focus of the geological world.In 1939 Li Siguang created the Qingyan group, 1943 Xu Deyou, Chen Kang in Qingyan collected and studied more than 90 species of fossils. After the liberation, the oil geology of the eight Cape, the original Beijing Institute of Geology and Nanjing Institute of Paleontology also made some work. Especially in recent years, the area of 1 / 200,000, the stratigraphic division, spatial distribution, lithofacies changes made a lot of work. The author participated in 1/50000 area adjustment work in this area, and put forward a little superficial understanding on the division and contrast of Anni Sikkian strata and the lithofacies characteristics.