| Citation: |
Jin-qiu Li, Yong-shuang Zhang, Xue Li, San-shao Ren, Li-na Ran, 2023. Identification of clayey altered ophiolite in the Nujiang tectonic belt and new understanding of its impacts on engineering stability, China Geology, 6, 756-758. doi: 10.31035/cg2023076
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Identification of clayey altered ophiolite in the Nujiang tectonic belt and new understanding of its impacts on engineering stability
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References
Pan GT, Ren F, Yin FG, Wang LQ, Wang DB, An XY, Tang Y, Liu H, Wang QY, Pang WH, Xu B. 2020. Key zones of oceanic plate geology and Sichuan-Tibet railway project. Earth Science, 45(7), 2293–2304 (in Chinese with English abstract). doi: 10.3799/dqkx.2020.070. Ji SC, Zhu JX, He HP, Tao Q, Zhu RL, Ma LY, Chen M, Li SY, Zhou JM. 2018. Conversion of serpentine to smectite under hydrothermal condition: Implication for solid-state transformation. American Mineralogist, 103, 241–251. doi: 10.2138/am-2018-6183CCBYNCND. Zhang YS, Guo CB, Qu YX, Song YH. 2011. Engineering geological properties of altered rocks and implications for railway construction in the Sanjiang orogenic belt, Southwest China. Bulletin of Engineering Geology and the Environment, 70(1), 143–152. doi: 10.1007/s10064-010-0294-y. Zhang YS, Li JQ, Ren SS, Bi JB, Wu RA. 2022. Development characteristics of clayey altered rocks in the Sichuan-Tibet traffic corridor and their promotion to large-scale landslides. Earth Science, 47(6), 1945–1956 (in Chinese with English abstract). doi: 10.3799/dqkx.2022.155. -
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Jin-qiu Li, Yong-shuang Zhang, Xue Li, San-shao Ren, Li-na Ran, 2023. Identification of clayey altered ophiolite in the Nujiang tectonic belt and new understanding of its impacts on engineering stability, China Geology, 6, 756-758. doi: 10.31035/cg2023076
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Figure 1.
Characteristics of the ophiolite belt near the Guola Mountain. a–Regional geological map. b–Location of the research area. c–Ophiolite outcrop at both banks of the Nujiang River. d–Ophiolite outcrop at the top of the Guola Mountain. e–Ophiolite outcrop on the northwest slope of the Guola Mountain. f–Ophiolite outcrop at the right bank of the Exue River.
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Figure 2.
XRD spectrum of whole rock (a) and altered clay (b), and disintegration test of altered rock (c)
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Figure 3.
Strength characteristics of altered ophiolite. a–average rebound strength of the ophiolite belt on the northwest slope of the Guola Mountain. b–shear strength of altered clay on the right bank of the Nujiang River.