Geological relics and resource evaluation of river capture——take the upper reaches of the Chaiwen river in Yiyuan,Shandong province as an example
River capture is an important issue in Quaternary geology and geomorphology,which has been widely concerned by scholars at home and abroad.In the upper reaches of the Chaiwen River in Yiyuan,Shandong,a river capture event occurred in the late Pleistocene,and the typical and complete river capture geological remains are still preserved.On the basis of field investigation and high precision DEM data,this paper studies the types,characteristics and causes of typical river capture geological relics resources in this area,and makes a comprehensive quantitative evaluation of river capture geolog-ical relics resources by using analytic hierarchy process.The results show that there are 1 world-class,4 national,3 provincial and 2 local level geological relics in the upper reaches of The Chaiwen River in Yiyuan,Shandong province.The comprehensive quantitative evaluation of the geological relics re-sources captured by rivers in this area has reference value for correctly understanding the evolution of the geomorphology captured by rivers,protecting and developing the geological relics resources,and promoting the development of local tourism economy.
the upper reaches of Chaiwen riverriver capturegeological heritages resource evaluationanalytic hierarchy process
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