| 河南云台山世界地质公园红石峡谷形成年代研究 |
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| 关键词:Yuntaishan geopark Hongshi (Red Rock) Canyon morphologic geochronology TL dating |
| 基金项目:河南省财政厅“2006年云台山世界地质公园地质遗迹保护”专项基金(编号: 2006-HJ-3) |
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| The Formation Age of the Hongshi (Red Rock) Canyon in the Yuntaishan Global Geopark, Henan Province |
| The landform formation age is one of the important parts of the geomorphology. The Hongshi Canyon is an important landscape and geological heritage resource in the Yuntaishan Geopark, and its formation age has important scientific significance for the planning and construction of the geopark. The authors investigated the formation age of the Hongshi Canyon and its responses to neotectonics through geological investigation in such aspects as the plane shape, the cross-section, and the longitudinal profile, and made a comparison with the formation of Zifang Rivier terraces and the activity age of the Heilongwangmiao fault. It is shown that the Hongshi Canyon has the geomorphic feature of young valley, as evidenced by the facts that its plane form was affected by tectonic joint, the cross section shows V-shaped feature, and the longitudinal profile is convex. Moreover, the thermo-luminescence (TL) data show the age of the argillaceous cements in the fluvial gravel layer on the replat is about (374.86±31.86) ka B.P., that of residual red soil of the same period in grike is (340.74±28.96) ka B.P., and that of the fault gouge in the Heilongwangmiao secondary fault is (300.04±25.50) ka B.P.. The results indicate that the generation of the Hongshi Canyon was controlled by the Heilongwangmiao fault, and it was formed during the mid- Pleistocene (Qp2-2) after 451—(374.86±31.86) ka B.P.. The results obtained by the authors provide a quantitative restriction for the formation of the Hongshi Canyon, and are also of some reference value for the study of geomorphology and tectonics in southern Taihang Mountains. |
| JIA Li-yun,ZHANG Xu-jiao,YANG Dong-chao,LI Zong-min,FAN Ke-feng,GONG Cheng,CHEN Jie,ZHANG Jin-zhe.2014.The Formation Age of the Hongshi (Red Rock) Canyon in the Yuntaishan Global Geopark, Henan Province[J].Acta Geoscientica Sinica,35(5):635-642. |
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