西北地区寒武纪岩石地层的划分与对比

DEPOSITIONAL AGE AND STRATIGRAPHIC CORRELATION OF THE CAMBRIAN STRATA IN NORTHWESTERN CHINA UNDER THE NEW CAMBRIAN GEOLOGICAL TIME SCALE

以国际地层委员会寒武系分会新的全球寒武系年代地层四分方案为依据,对我国西北地区寒武系进行了重新划分。以西北地区的塔里木、中天山、阿尔金—北山、柴达木盆地北缘、南祁连、北祁连、中祁连、南秦岭、汉南、鄂尔多斯西南缘和华北地层区等11个地区(地层区)岩石地层单位为代表,初步将以上区域寒武纪岩石地层纳入4个统级单位和10个阶级单位的年代地层框架之中,以期为我国西北地区寒武系的划分和对比,建立西北地区寒武系生物地层和年代地层对比系统提供科学依据。

The age of Cambrian lithostratigraphic units in eleven areas of northwestern China, including the Tarim, middle Tianshan, Altun Shan, Bei Shah, northern Qaidam, southern Qilian, northern Qilian, middle Qilian, southern Qinling, southern Hanzhong, Ordos, and North China, are considered under the new global/Chinese Cambrian framework with four epochs and ten ages. This study would provides new insights into stratigraphic subdivision and correlation of the Cambrian System of northwestern China.