平衡剖面技术恢复云南兰坪—金顶地区白垩纪地层缩短历史及其意义

刘礼洁; 郭福生; 姜勇彪; 朱志军

平衡剖面技术恢复云南兰坪—金顶地区白垩纪地层缩短历史及其意义

东华理工大学地球科学学院，江西抚州 344000

基金项目:
东华理工大学研究生创新基金项目(DYCA10005)，国家自然科学基金项目(U0933605)及中国地质调查局地质调查工作项目(12120108180096)联合资助

详细信息

作者简介: 刘礼洁(1986-)，女，硕士研究生，专业方向沉积盆地分析，E-mail:llj102510251025@yahoo.com.cn

通讯作者: 郭福生，E-mail:fsguo@263.net

中图分类号: P534.53

收稿日期: 2011-03-14

刊出日期: 2011-09-25

CRETACEOUS DEFORMATION HISTORY DETERMINED BY RESTORATION OF THE BALANCED SECTION ACROSS THE LANPING-JINDING REGION, YUNNAN, CHINA

East China Institute of Technology, Fuzhou, Jiangxi 344000, China

More Information

Corresponding author: GUO Fu-sheng, fsguo@263.net

Received Date: 14 March 2011

Publish Date: 25 September 2011

摘要

摘要:
兰坪盆地为中新生代陆内盆地, 地处欧亚板块与印度板块的拼合带, 其中兰坪金顶地区白垩系发育, 很好地记录了该区的区域构造运动特征。通过野外实测和室内资料整理, 在兰坪金顶地区选择一条北西—南东向地质剖面, 用平衡剖面技术恢复研究区白垩系因欧亚板块与印度板块碰撞而引起的北西—南东向地层缩短量, 揭示盆地的性质及变形历史, 检验其地质构造解释的正确合理性, 并进行数字化分析。研究结果表明, 白垩系景星组下段至南新组沉积期间地层总缩短量为2.938 km, 在南新组构造活动最为强烈。
- 兰坪金顶地区 /
- 白垩系 /
- 缩短量 /
- 平衡剖面技术
Abstract:
The Nanping Basin, located between the India and Eurasian plates, was a large Mesozoic-Cenozoic basin and deposited huge thick continuous Cretaceous strata, which recorded well the regional tectonic movement characteristics. Based on field survey and indoor data sorting, a technique of balanced section across the Lanping-Jinding region was applied to a NW-SN geological profile to reconstruct the crust shortening history from Cretaceous and to understand the nature of the basin and to check up its geological structure explained correctly and to make a digital analysis. The results showed that the total length about the Cretaceous crust shortening was 2.938 km from the under section of Jingxing Formation to Nanxin Formation, and Nanxin Formation had the most strongest tectonic movement.
- Lanping-Jinding region /
- Cretaceous /
- shortening length /
- technique of balanced section

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图 1 研究区附近地质图

Figure 1.

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图 2 综合地质剖面图

Figure 2.

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图 3 兰坪金顶地区北西－南东向平衡剖面恢复图

Figure 3.

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图 4 缩短率－时间曲线图

Figure 4.

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表 1 兰坪金顶地区北西—南东向平衡剖面白垩系地层缩短特征

Table 1. The Cretaceous strata shortening character from a NW-SE profile in the Lanping-Jinding area

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