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《Chinese Journal of Geology》 1984-02
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PRELIMINARY INVESTIGATION INTO THE STRUCTURAL FEATURES OF THE MIDDLE SEGMENT OF BANGGONG LAKE-NUJIANG RIVER ZONE

Pan Yusheng(Institute of Geology, Academia Sinica, Beijing)  
In 1980, we preliminarily investigated the Dongqiao-Nagqu segment of the zone, where some basical works had been done comparatively well before. Some interesting results have been gained during the investigation, including the discovery of one set of pillow lavas in the vicinity of Dongqiao and the new finding of a series of melange near the Qinghai-Ti-bet highway maintenance squad no. 123. It has been found that the Jurassic strata in the south of Dongqiao are mainly a series of sediments composited mainly of sillicious-volcanic rocks, indicating the features of eugeosyncline. Besides the occurence of tholeiite representing the spreading stage of the ocean, the petrochemistry of the volcanic rocks reveals the existence of ocean island type volcanic rocks with high Ti content. Belonging to pelagic deposits, the sillicious rocks here commonly contain Rediolaria. The ultramafic rocks in this segment distribute zonally, and belong to Alpine type, according to their type and rock association, as well as their chemical composition. It seems that there is a ophiolite belt incomplete-preserved in this region. It has been shown by the surface geological surveying that the structural zonation here is very distint, coinciding with the zonation of the of convergent plate margin.Basing upon the description on the regional geology, the author has summarrized the structural features of Dongqiao-Nagqu segment, and proposed the existence of oceanic crust (ophiolite) in the region. It is argued that this zone is being a paleosuture during the geological history, the evolution of which since Mesozoic era has been analyzed in this paper as well.
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【References】
Chinese Journal Full-text Database 1 Hits
1 CHEN Yu-lu,JIANG Yuan-sheng (2 Regional Geological Surveying Institute of Geological Surveying Academy of Sichuan Province.Shuanglui,Shichuan,610213,China);AGE AND SIGNIFICANCE OF VOLCANIC ROCK OF EARLY CRETACEOUS IN THE BAN GE-QIELICUO AREAA IN TIBET[J];Journal of Geomechanics;2002-01
【Citations】
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 Liu Fuhui;A PRELIMINARY STUDY ON THE BLOCK-FAULTING CHARACTERISTICS OF PAN-Ⅺ REGION, SICHUAN, CHINA[J];;1984-02
2 Huang Bangqiang;TECTONIC FEATURE OF GAIZE-SHUANGHU REGION, XIZANG (TIBET)[J];;1986-02
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10 Hu Jiajie(Wuhan College of Geology) Pu Zhaohua Zhang Shumin Xiang Dezhong (Second Geological Team, Geological Bureau of Xizang);THE ZIGZAG CHROMITE ORE BODIES IN LUOBUSA,XIZANG (TIBET) AND THEIR STRESS FIELD FEATURES[J];;1981-02
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 Li Cai;THE LONGMUCUO-SHUANGHU-LANCANGJIANG PLATE SUTURE AND THE NORTH BOUNDARY OF DISTRIBUTION OF GONDWANA FACIES PERMO-CARBONIFEROUS SYSTEM IN NORTHERN XIZANG,CHINA[J];;1987-02
2 MENG Ling_shun 1,CUI Jun_wen 2 (1.Changchun University of Science and Technology, Changchun 130026, China; 2.Institute of Geology, Chinese Academy of Geological Sciences (CAGS), Beijing 100037, China);STUDY ON THE GRAVITY FIELD AND DEEP-SEATED CRUSTAL STRUCTURE AT THE ALTUN MTS-THE QILIAN MTS AREA[J];JOURNAL OF CHANGCHUN UNIVERSITY OF SCIENCE AND TECHNOLOGY;2000-02
3 LI Cai, WANG Tian_wu, YANG De_ming, YANG Ri_hong (College of Earth Sciences, Jilin University, Changchun 130026,China) \;;THE LITHOLOGICAL COMPOSITION AND TECTONIC EVOLUTION OF QIANGTANG CENTRAL UPLIFT REGION,TIBET[J];Journal of Changchun University of Science and Technology;2001-01
4 LIU Shen,CHI Xiao_guo,LI Cai,JIN Wei,WANG Tian_wu (College of Earth Sciences, Jilin University, Changchun 130026, China);GEOCHEMISTRY AND GENESIS OF CENOZOIC VOLCANIC ROCK SERIES IN NORTHERN TIBET[J];Journal of Changchun University of Science and Technology;2001-03
5 YANG De_ming,LI Cai,ZHENG Chang_qing (College of Earth Sciences,Jilin University,Changchun 130026,China);TECTONO-GEOCHEMICAL CHARACTERISTICS OF INDO-CHINA EPOCH VOLCANIC ROCKS IN QIANGTANG AREA, TIBET[J];Journal of Changchun University of Science and Technology;2001-04
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【Secondary References】
Chinese Journal Full-text Database 2 Hits
1 ZHANG Xi-juan1, ZENG Qing-li2, MA Yin-sheng1(1. Institute of Geomechanics, Chinese Academy of Geosciences, Beijing 100081, China 2. Key Laboratory of Engineering Geomechanics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China);Basic characteristics of the differential uplift of the Yulong-Haba block and its geological hazard effects[J];Geology in China;2006-05
2 Pan Yusheng(Institute of Geology, Academia Sinica);TECTONIC FEATURES AND EVOLUTION OF THE WESTERN KUNLUN MOUNTAIN REGION[J];Chinese Journal of Geology;1990-03
【Secondary Citations】
Chinese Journal Full-text Database 4 Hits
1 CHANG WEN-YOU, YEH HUNG, ZHONG JIA-YOU AND ZHANG MU-SHENG;A PRELIMINARY NOTE ON BLOCK-FAULTING AND LAYER- GLIDING AND THEIR BEARING UPON THE DISTRIBUTION AND MECHANISM OF EARTHQUAKE[J];Chinese Journal of Geology;1973-04
2 ZHONG JIA-YOU;PRELIMILARY REPORT ON THE STRESS DISTRIBUTION IN THE EARTH'CRUST BENEATH THE TERRITORY OF CHINA BY MODEL EXPERIMENTS[J];Chinese Journal of Geology;1974-02
3 CHANG WEN-YU CHUNG CHIA-YU YEH HUNG CONG Bo-LIN;PRELIMINARY NOTE ON THE ORIGIN AND DEVELOPMENT OF ROCK-FRACTURE AND ITS BEARING ON EARTHQUAKES[J];Acta Geological Sinica;1975-01
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