中国地质调查2024，Vol.11Issue(4)：42-49,8.DOI:10.19388/j.zgdzdc.2023.280
黔东北松桃高地南华系铁丝坳组和两界河组碎屑组分及源区背景
Detrital composition of Tiesiao Formation and Liangjiehe Formation of Nanhua System in Songtao Highland of the northeastern Guizhou Province and tectonic setting of its source regions
摘要
Abstract
The tectonic properties of Xuefeng movement has significant controversies.This study anglyzed the ter-rigenous detrital composition of Tiesiao Formation and Liangjiehe Formation of Nanhua System in Songtao Highland of the northeastern Guizhou Province,using Dickinson triangle diagrams theory.The results show that the terrige-nous detrital source mainly comes from arc orogen sources and recycled orogen provenances,accompanied by vol-canic activities.The maturity of the detrital components in Tiesiao Formation is relatively low,and the components mainly landed around the volcanic arc source area,showing the characteristics of near erosion and transporting ac-cumulation.The quartz content in Liangjiehe Formation is higher than that in Tiesiao Formation,which lands in the recycled orogen provenances.The detrital composition contains basalt,andesitic basalt,trachyte,tuff,ignim-brite,rhyolite,felsic mylonites and so on,indicating that intracontinental rift and intraplate orogenic mechanism occurred during or before the sedimentation of Tiesiao Formation and Liangjiehe Formation in the study area.This research could provide some microscopic evidence for tectonic attribute of Xuefeng movement.关键词
南华系/铁丝坳组/两界河组/陆源碎屑/陆内裂陷/板内造山Key words
Nanhua System/Tiesiao Formation/Liangjiehe Formation/terrigenous debris/intracontinental rift/intraplate orogeny分类
天文与地球科学引用本文复制引用
龙建喜,周琦,张遂,朱路艳,杨忠琴..黔东北松桃高地南华系铁丝坳组和两界河组碎屑组分及源区背景[J].中国地质调查,2024,11(4):42-49,8.基金项目
中央引导地方科技发展资金项目"锰矿资源深部预测勘查技术研发基地(编号:黔科中引地[2021]4027)"和贵州省找矿突破战略行动重大协同创新项目"贵州锰、磷、铝优势资源成矿规律与快速高效智慧化勘查技术研究与示范(编号:黔科合战略找矿[2022]ZD003)"联合资助. （编号:黔科中引地[2021]4027）
