摘要
燕山运动是中国东部晚中生代重要的陆内造山运动,具有广泛而深远的地质影响。虽然前人对燕山运动的研究已近百年,积累了大量研究成果,然而目前对于燕山造山带的陆内造山过程仍存在很大争议。针对这一科学问题,选取燕山西部尚义盆地开展了1∶5万专题地质填图。在此基础上,通过盆地充填序列、岩相、沉积环境、物源的综合分析,恢复了盆地岩相古地理,建立了盆地演化模型,并探讨了燕山造山带陆内造山过程的沉积响应。根据沉积岩区岩相组合填图方法,绘制了1∶5万组-相级岩相分布图。燕山西部尚义盆地侏罗纪—早白垩世早期沉积演化记录了燕山造山带造山前伸展、同造山挤压和造山后伸展的全过程。
The Yanshan movement was an important intra-continental orogenic movement in East China during the Late Mesozoic,causing extensive and significant influence. Although researchers have studied the Yanshan movement for nearly one hundred years and achieved lots of results,the intra-continental orogeny of the Yanshan orogenic belt remains a problem of much controversy. To tackle this problem,the authors chose the Shangyi Basin in western Yanshan Mountain to carry out 1∶50000 special geological map-ping. On the basis of the geological mapping,an integrated analysis of basin filling sequences,lithofacies,sedimentary environment and provenance was conducted to reconstruct lithofacies paleogeography,construct basin evolutionary model and discuss sedimentary response to the intra-continental orogeny of the Yanshan orogenic belt. A 1∶50000 formation-facies lithofacies geological map was completed by the method of sedimentary lithofacies association mapping. The sedimentary evolution of the Shangyi Basin in the western Yanshan Mountain recorded the whole process of pre-orogenic extension,syn-orogenic compression and post-orogenic extension of the Yanshan orogenic belt.
出处
《地质通报》
CAS
CSCD
北大核心
2017年第11期1983-2008,共26页
Geological Bulletin of China
基金
国家自然科学基金项目<华北晚侏罗世风成沉积组合及古气候和古地理意义>(批准号:41672111)
<燕山J/K之交(土城子组-张家口组)盆地演化及华北北缘"裂谷系">(批准号:41372109)
<胶莱盆地恐龙化石埋藏学及其古生态与古地理意义>(批准号:41272021)
中国地质调查局项目<重要造山带关键地区区域地质专题调查>(编号:12120114064301)
<陆相地层及盆地区域地质调查填图试点与示范>(编号:12120115068901)
<侏罗系土城子阶时限的研究>(编号:1212011120142)
国家科技部基础工作专项<中国标准地层建立-中国地层表的完善>(编号:2015FY310100)
东华理工大学博士科研启动基金项目<晋东北晚侏罗世风成沉积组合及古气候和古地理意义>(编号:DHBK2016126)
关键词
燕山运动
尚义盆地
专题地质填图
岩相
物源
陆内造山
Yanshan movement
Shangyi Basin
special geological mapping
lithofacies
provenance
intra-continental orogeny