摘要
根据新近采自中国南天山西段志留—泥盆系乌帕塔尔坎群中的安山岩样品和石炭—二叠纪康克林组上部英安岩角砾样品的全岩Ar-Ar定年测试,乌帕塔尔坎群安山岩的坪年龄为427.70±0.60Ma,等时年龄为426.96±4.57Ma;康克林组上部的英安岩角砾的坪年龄为288.16±0.40Ma,等时年龄为289.18±2.02Ma。测试结果为研究中国南天山(西段)古生代造山带的构造体系提供了新的依据。
The samples were collected in the western part of Chinese Southern Tianshan Mountains. The rock types for Ar-Ar analysis are andesite in the Wupataerkan Group of the Silurian to Devonian age and quartz andesite breccia in the Kangkelin Formation of the Carboniferous to Permian age. The plate and isochron ages of the former sample are 427.70 ± 0.60 Ma and 426.96± 4.57 Ma respectively; and those of the latter sample are 288. 16±0. 40 Ma and 289. 18± 2.02 Ma, respectively. The 40Ar-39Ar geochronologic date reported here provide new information for the study in the Chinese Southern Tianshan erogenic belt.
出处
《高校地质学报》
CAS
CSCD
2003年第3期494-498,共5页
Geological Journal of China Universities
基金
国家自然科学基金(批准号40072077)
塔里木油田分公司科技攻关项目(41301050336)
关键词
AR-AR定年
乌帕塔尔坎群
康克林组
南天山西段
中国
western part of Chinese Southern Tianshan
Wupataerkan Group
Kangkelin Formation
Ar-Ar age
