地质通报2012，Vol.31Issue(2)：321-325,5.
滇西保山地块中部寒武纪双地麦群的特征及其时代重新厘定
Characteristics and redefining of the Cambrian Shuangmaidi Group in the middle part of the Baoshan block of western Yunnan Province
摘要
Abstract
On the basis of the latest data obtained from 1:50000 regional geological survey of the Banqiao Sheet, the authors redefined the Early-Middle Cambrian Shuangmaidi Group as the Late Cambrian Hetaoping Formation. The lithologic association is composed of microclastic rocks and marbles with some basalts and andesitic basalts. The authors discovered for the first time the Late Cambrian trilobites Blackwelderia baoshanensis Luo,Blackwelderia sp. ,Parashengia elongata Luo , revealing the loss of Early and Middle Cambrian sediments. It is interesting that the bottom-living and planktonic trilobites lived together in mixture. This study will be of great significance in the study of tectonic property, evolution and unit subdivision in Baoshan block.关键词
保山地块/寒武纪/三叶虫/双麦地群/核桃坪组/滇西Key words
Baoshan block/ Cambrian/ trilobites/ Shuangmaidi Group/ Hetaoping Formation/ western Yunnan Province分类
天文与地球科学引用本文复制引用
陈光艳,段向东,张虎,曾文涛..滇西保山地块中部寒武纪双地麦群的特征及其时代重新厘定[J].地质通报,2012,31(2):321-325,5.基金项目
中国地质调查局项目《云南1∶5万板桥街幅、保山县幅等8幅区域地质调查》(编号:1212010784003) （编号:1212010784003）
