康滇地轴西缘锦屏山地区的生物地层

Biostratigraphy in the Jinpingshan region along the western margin of the Xikang Yunnan axis,southwestern China

笔者在 1:5万腊窝乡、里庄幅区域地质调查中 ,对区内出露的沉积盖层中的生物地层层序、古生物化石的产出状态、组合面貌和发育特征等进行了详细的研究。将区内生物地层单位分为玛多 马尔康分区雅江小区和盐源 丽江分区两个片区。自下而上 ,雅江小区建立有 6个生物化石带 ,盐源 丽江分区建立有 14个生物化石带。

The present paper deals in detail with the attitudes and occurrences of the biostratigraphic sequences and fossils from the sedimentary cover exposed in the Jinpingshan region along the western margin of the Xikang Yunnan axis,southwestern China in the light of the regional geological surveying of the 1∶50000 Lawoxiang and Lizhuang sheets.These biostratigraphic sequences fall into the Yajiang stratigraphic subdivision in the Madoi Barkam division,and Yanyuan Lijiang stratigraphic division.The Yajiang stratigraphic subdivision in the Madoi Barkam stratigraphic divison comprises six biozones,while the Yanyuan Lijiang stratigraphic division includes fourteen biozones in ascending stratigraphic order.