Fadong

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Michigan State University

Tian

Chinese Academy of Sciences

L-

LI -

Institute of Earth Environment

Zhida

Chen

Soochow University

Jianping

Shandong University of Science and Technology

Changming

Mingzhong

Second Affiliated Hospital of Jilin University

Cong Cong

Affiliated Hospital of Shandong University of Traditional Chinese Medicine

Shanshan

Cooperative Institutions

Chinese Academy of Sciences

Dalian University of Technology

Soochow University

Nanjing University of Information Science and Technology

State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering

Education Department of Jiangxi Province

Nanchang Normal University

Cheng Shiu University

University of Kang Ning

Jiangsu University

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Slope runoff study in situ using rainfall simulator in mountainous area of North China

地理学报：英文版 (2009)

Yu Jingjie Yang Cong Cong Liu

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Paleocurrent Analysis on the Basal Conglomerate of the Model Changzhougou Formation in Qian＇an

武汉大学学报：自然科学英文版 (2016)

Xiao Junwen Wu Fadong Chen

The paleoflow direction of the basal conglomerate of the Changzhougou formation is obtained by the paleocurrent analysis of certain sedimentary structures, and the ancient sedimentary environment of the Qian’an Region is determined by observing the psephicity and gradation of gravel in conglomerate. The results show that the paleoflow direction is from northwest to southwest, and the paleocurrent data manifest a single-peak style in a rose diagram. The average paleoflow direction in the Qian’an region is 265°. The basal conglomerate is of littoral facies, and the sediments of conglomerates are mainly sourced from Shanhaiguan.

Paleocurrent

Conglomerate

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Yanshan, Gaoshan——Two Active Volcanoes of the Volcanic Cluster in Arshan, Inner Mongolia

中国地震研究：英文版 (2005)

Bai Zhida Tian Mingzhong Wu

The volcanic cluster in Arshan, Inner Mongolia, is located in the west of the middle section of the Da Hinggan Mountains. There are more than forty Cenozoic volcanoes among which the Yanshan and Gaoshan are the active ones in broad sense and basaltic central vents. Arshan is a newly found volcanic active region in the Chinese continent. The volcanoes are perfectly preserved and composed of cinder cones, pyroclastic sheets and lava flows. Their cones are grand and the Gaoshan cone is about 362m high, and the depth of the Yanshan crater is about 140m. The pyroclastic sheet is mainly made up of scoria, and the distribution area of scoria with thickness more than 1m is about 27km2. There are two Carbonized-wood sites in the pyroclastic sheet and the 14C datings indicate ages of 1990 ± 100a B. P and 1900 ±70a B. P, which are rectified by dendrodating. Basaltic lava flows are uncovered, and they change from pahoehoe in the early stage to aa in the later stage. There are lots of perfect fumarolic cones, fumarolic dishes and lava tumulus in the front zones. The spread of lava flow is controlled by the local topography and its main body flowed northwestwards covering the Holocene rivers and swamp deposits and blocked up the Halahahe river and its branches to create six lava-dam lakes. For these distinguishing features, Arshan volcanic cluster could be called another natural Volcano Museum.

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Scoria

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Volcanic plateau

Volcanic cone

Lava dome

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Discovery and Significance of Quaternary Glacial Vestiges in the Hexigten Area of the Southern Da Hinggan Mountains, Inner Mongolia

地质学报：英文版 (2005)

Сун Hongyan Tian Mingzhong Wu

The question whether there have been Quaternary glaciations in the Da Hinggan area has puzzled glacial geologists for many years because no sufficient glacial evidence has been found in this area. The study of Quaternary glaciers in the Da Hinggan area is also a key issue of the glaciology in China because of the special location of this area. In the past two years,a large number of complete and typical glacial vestiges have been found in Hexigten in the southern Da Hinggan Mountains,such as fossil cirque groups,horns,knife-edge crests,terminal moraines,glacial stepped stones.These landforms are located at a watershed,which are thus impossible to be formed due to tectonic processes,water or weathering,but can only be formed by glaciation. The calculated flat indexes of the fossil cirques in the Hexigten are 1.7-4.5,4-5 and 1.3-5,which are within the range of 1.7-5 that is the flat index of real cirques. The typical and complete moraines have also been found in this area. All these glacial vestiges prove that the Quaternary glaciers did exist in the Da Hinggan Mountains of eastern China. Thus,it is of important scientific significance for the research on Chinese,even the global climatic and environmental evolution since the Quaternary.

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Cirque

Terminal moraine

Deglaciation

Glacial landform

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