摘要
通过分析江郎山两条峡谷岩壁地貌特征和谷底的纵剖面曲线特征,对比同一地区同类地貌成因,认为小弄峡是经流水侵蚀张节理而形成的裂谷,大弄峡则为断层谷.根据两条峡谷谷底纵剖面上存在的两级岩槛和郎峰的两级侵蚀"阶地",初步恢复了江郎山的抬升演化历史;同时认为具有区域性特征的抬升沟谷可能是记录区域地貌演化历史的重要地貌遗迹.
Based on properties of palisades between the ＂Three-Sliced-Rock＂ of Jianglang Mr. , and comparing the Xiaonongxia Ravine with the local similar landforms, this paper suggested that the Xiaonongxia Ravine belongs to rift valley from tension joint. As there are lack of evidences about the long-term water erosion and markedly different surface properties of the cliff landforms of Danongxia Ravine, the paper proposed that the formation of the Danongxia Ravine be attributed to fault actions. Meanwhile, the article retrieved the evolution of the Mr. Jianglang which showed that the ＂Three-Sliced Rock＂ had undergone tectonic lifting twice relying upon the existing two orders of rock benches along the ravines.
出处
《信阳师范学院学报（自然科学版）》
CAS
2010年第4期546-549,共4页
Journal of Xinyang Normal University(Natural Science Edition)
基金
国家自然科学基金项目(40701190)
浙江省建设厅"丹霞地貌申遗项目"资助项目
关键词
江郎山
沟谷地貌
沟谷纵剖面
JiangIang Mountain
longitudinal profile of valley
ravine landform
