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Slope Reinforcement for Housing in Three Gorges Reservoir Area

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Journal of Mountain Science 2011年第2期8卷 314-320页

作者： wu Faquan LUO Yuanhua CHANG Zhonghua institute of geology and geophysics Chinese Academy of Sciences Beijing 100029 China Office of Three Gorges Project Construction Committee the State Council of China Beijing 100038 China

The Three Gorges Project of the Yangtze River is the largest hydropower-complex project under construction in the world. Under the largescale relocation projects, 2874 engineered slopes are formed along with the construction of new towns. In this paper, the cutting slopes are mainly soil slopes and rock slopes. Soil slopes include residual soil slopes, colluvial accumulation slopes, swelling soil slopes, and artificial earth fill slopes, etc. Rock slopes include blocky structure rock slopes, layer structure rock slopes, and clastic structure rock slopes, etc. Varied protection measures have been used for slope protection in the reservoir area including shotcrete concrete-anchor bars, frame beams, retaining walls, slope stabilizing piles, sheet-pile walls, anchorage anti-shear tunnels, flexible protection grids, and drainage, etc. Besides, slope deformation monitoring systems have been set up to monitor deformation failure and the stability state of slopes. The protection measures have guaranteed slope safety and maintained a harmony with the urban environment and surrounding landscape.

关键词： Slope reinforcement Housing for resettlement Three Gorges Reservoir

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GEOCHEMISTRY OF AN EARLY PALEOZOIC BIMODAL VOLCANIC SUITE AT BIANMAGOU AREA, NORTH QILIAN MOUNTAIN, NW CHINA

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Scientia Geologica Sinica 2000年第2期 195-203页

作者： Wang Yan Qian Qing and Zhang Qi (institute of geology and geophysics chinese academy of sciences, beijing 100029)

Major and trace elements, REE concentrations and Sr, Nd isotope composihons have been measured in Bianmgou basaltic andesite-rhyolite bimodal association of intraoceanic arc of early Paleozoic age. Basaltic andesites have high MgO (5.78～9.71%) and very low TiO2, (0.30～0.45%) content with Ti/Zr ratios 63～73. Their REE show flat or slightly LREE depleted patterns with (La/Yb)= 0.65～1.55 and the HREE concentrations are relatively low with YbN ranging from 5～9. They are also depleted in HFSE (Zr,Nb, Y, V) with some 8～10 times the Zr chondritic abundances and 5～9 times of the Y chondritic abundances. All of these give them a strong affinity with boninite. Rhyolites are characterized by very low but rather constant contents of TiO2, and incompatible trace elements like La, Th, Nb or Zr, and show flat or slightly enriched LREE patterns with (La/YbN)ranging from 1～3 and with 11～37 times the La chondritic abundances and a negative Eu anomaly. They exhibit a pronounced Nb and Ti giving them a strong affinity with island arc series. The εNd (t) values of rhyolites and basaltic andesites fall in the range of +3.5 to +3.9 and of+3. 1 to +3.4. Basaltic andesites are likely to be evolved from partial melting of mantle wedge. Inconstant trace element ratios throughout the association and dominant rhyolites in the association rules out the fractionation-controlled origin of rhyolitic magmas, but support the hypothesis that Bianmagou rhyoIites may be formed by anatexis of hydrothermally altered local oceanic *** bimodal volcanic rocks record a magmatism of inter-arc basin environment

关键词： AT NORTH QILIAN MOUNTAIN NW CHINA GEOCHEMISTRY OF AN EARLY PALEOZOIC BIMODAL VOLCANIC SUITE AT BIANMAGOU AREA La Zhang

DISTRIBUTION OF GOLD-BEARING QUARTZ VEINS IN FIVE GOLD DEPOSITS AND A VORTEX METALLIZATION

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Scientia Geologica Sinica 1997年第1期 53-62页

作者： Lu Defu (institute of geology, chinese academy of sciences, beijing 100029

ＤＩＳＴＲＩＢＵＴＩＯＮＯＦＧＯＬＤ－ＢＥＡＲＩＮＧＱＵＡＲＴＺＶＥＩＮＩＮＦＩＶＥＧＯＬＤＤＥＰＯＳＩＴＳＡＮＤＡＶＯＲＴＥＸＭＥＴＡＬＬＩＺＡＴＩＯＮTXＤＩＳＴＲＩＢＵＴＩＯＮＯＦＧＯＬＤ┐ＢＥＡＲＩＮＧＱＵＡＲ...

ＤＩＳＴＲＩＢＵＴＩＯＮＯＦＧＯＬＤ－ＢＥＡＲＩＮＧＱＵＡＲＴＺＶＥＩＮＩＮＦＩＶＥＧＯＬＤＤＥＰＯＳＩＴＳＡＮＤＡＶＯＲＴＥＸＭＥＴＡＬＬＩＺＡＴＩＯＮTXＤＩＳＴＲＩＢＵＴＩＯＮＯＦＧＯＬＤ┐ＢＥＡＲＩＮＧＱＵＡＲＴＺＶＥＩＮＳＩＮＦＩＶＥＧＯＬＤ...

关键词：

GOLD DEPOSITS IN THE NORTH CHINA PLATFORM:SEVERAL EXAMPLES

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Scientia Geologica Sinica 1994年第4期 405-413页

作者： Lin Bingguang(institute of geology, chinese academy of sciences, beijing 100029)

ＧＯＬＤＤＥＰＯＳＩＴＳＩＮＴＨＥＮＯＲＴＨＣＨＩＮＡＰＬＡＴＦＯＲＭ：ＳＥＶＥＲＡＬＥＸＡＭＰＬＥＳＬｉｎＢｉｎｇｇｕａｎｇ（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ，...

ＧＯＬＤＤＥＰＯＳＩＴＳＩＮＴＨＥＮＯＲＴＨＣＨＩＮＡＰＬＡＴＦＯＲＭ：ＳＥＶＥＲＡＬＥＸＡＭＰＬＥＳＬｉｎＢｉｎｇｇｕａｎｇ（ＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ，Ｂｅｉｊｉｎｇ１０００２９）（Ｒｅ...

关键词：

RARE EARTH ELEMENTS AND THEIR REDISTRIBUTION IN THE LALA COPPER DEPOSIT,HUILI,SICHUAN PROVINCE

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Scientia Geologica Sinica 1997年第2期 1-9页

作者： Yong Zhou institute of geology, chinese academy of sciences, beijing 100029

ＲＡＲＥＥＡＲＴＨＥＬＥＭＥＮＴＳＡＮＤＴＨＥＩＲＲＥＤＩＳＴＲＩＢＵＴＩＯＩＮＴＨＥＬＡＬＡＣＯＰＰＥＲＤＥＰＯＳＩＴ，ＨＵＩＬＩ，ＳＩＣＨＵＡＮＰＲＯＶＩＮＣＥTXＲＡＲＥＥＡＲＴＨＥＬＥＭＥＮＴＳＡＮＤＴＨＥＩＲ...

ＲＡＲＥＥＡＲＴＨＥＬＥＭＥＮＴＳＡＮＤＴＨＥＩＲＲＥＤＩＳＴＲＩＢＵＴＩＯＩＮＴＨＥＬＡＬＡＣＯＰＰＥＲＤＥＰＯＳＩＴ，ＨＵＩＬＩ，ＳＩＣＨＵＡＮＰＲＯＶＩＮＣＥTXＲＡＲＥＥＡＲＴＨＥＬＥＭＥＮＴＳＡＮＤＴＨＥＩＲＲＥＤＩＳＴＲＩＢＵＴＩＯＮＩＮＴ...

关键词：

CHARACTERISTIC DOLOMITE AND ITS FACIES SIGNIFICANCE IN THE CARBONATE ROCKS OF TRIASSIC IN UPPER YANGTZE PLATFORM

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Scientia Geologica Sinica 1997年第1期 70-78页

作者： Zhu Jingquan (institute of geology, chinese academy of sciences, beijing, 100029

ＣＨＡＲＡＣＴＥＲＩＳＴＩＣＤＯＬＯＭＩＴＥＡＮＤＩＴＳＦＡＣＩＥＳ樱桑牵危桑疲桑茫粒危茫牛桑危裕龋牛茫粒遥拢希危粒裕牛遥希茫耍樱希疲裕遥桑粒樱樱桑茫桑危眨校校牛遥伲粒危牵裕冢牛校蹋粒裕疲希遥蚑XＣＨＡＲＡＣＴＥＲＩ... 详细信息

ＣＨＡＲＡＣＴＥＲＩＳＴＩＣＤＯＬＯＭＩＴＥＡＮＤＩＴＳＦＡＣＩＥＳ樱桑牵危桑疲桑茫粒危茫牛桑危裕龋牛茫粒遥拢希危粒裕牛遥希茫耍樱希疲裕遥桑粒樱樱桑茫桑危眨校校牛遥伲粒危牵裕冢牛校蹋粒裕疲希遥蚑XＣＨＡＲＡＣＴＥＲＩＳＴＩＣＤＯＬＯＭＩＴＥＡＮＤＩＴ?..

关键词：悖悖 OF ROCKS FACIES SIGNIFICANCE THE DOLOMITE CHARACTERISTIC 梗梗 AND ITS

HYALOPHANE-BEARING GNEISS IN NORTH CHINA CRATON AND ITS GEOLOGICAL IMPLICATION

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Scientia Geologica Sinica 1997年第3期 67-72页

作者： Yan Yuehua institute of geology, chinese academy of sciences, beijing, 100029

ＨＹＡＬＯＰＨＡＮＥＢＥＡＲＩＮＧＧＮＥＩＳＳＩＮＮＯＲＴＨＣＨＩＮＡＣＲＡＴＯＮＡＮＤＩＴＳＧＥＯＬＯＧＩＣＡＬＩＭＰＬＩＣＡＴＩＯＮＹａｎＹｕｅｈｕａＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ，ＣｈｉｎｅｓｅＡｃａｄ... 详细信息

ＨＹＡＬＯＰＨＡＮＥＢＥＡＲＩＮＧＧＮＥＩＳＳＩＮＮＯＲＴＨＣＨＩＮＡＣＲＡＴＯＮＡＮＤＩＴＳＧＥＯＬＯＧＩＣＡＬＩＭＰＬＩＣＡＴＩＯＮＹａｎＹｕｅｈｕａＩｎｓｔｉｔｕｔｅｏｆＧｅｏｌｏｇｙ，ＣｈｉｎｅｓｅＡｃａｄｅｍｙｏｆＳｃｉｅｎｃｅｓ，Ｂｅｉ...

关键词： ITS GEOLOGICAL CRATON AND CHINA

Orogenic and Anorogenic Granitoids in the Altay Mountains of Xinjiang and Their Discrimination Criteria

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Acta Geologica Sinica(English Edition) 1989年第1期63卷 45-64页

作者： Zou Tianren institute of Mineral Deposits, chinese academy of Geological sciences, beijing Chao Huizhi and wu Baiqing Xinjiang institute of geology, Ministry of Metallurgical Industry Urumqi, Xinjiang Jiang Minxi 1Teliti and Yang Yueqing also participated in the field work. Those who participated in the laboratory study also include Yang Bingbin Duan Shangzhi Lü Qiaoling Li Longqi and Yu Shimei.

On the basis of field geological studies of the granotoids in the region, mineralogical, petrological, geochemical(including stable isotope geochemical) and isotopic geochronological investigations were carried out on selected representative granitic bodies of various types. The authors have concluded that, apart from the bodies of the orogenic granitoid series, there also exist intrusions of the anorogenic granitoid series in the region. The intrusives of the two series were formed not only in different ages and tectonic environments, but also were derived from different sources of materials. Moreover, they are associated with different mineralizations, belonging to different minerologenetic series(Cheng et al., 1983). They show distinctly a series of discriminative criteria. The problems under discussion in the present paper are of important theoretical and practical significance in the studies of granites of the orogenic belt, particularly the studies of the genesis and related metallogeny of the granites of the region.

关键词： Orogenic and Anorogenic Granitoids in the Altay Mountains of Xinjiang and Their Discrimination Criteria

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Paleomagnetic study on orogenic belt:An example from Early Cretaceous volcanic rocks,Inner Mongolia,China

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Science China Earth sciences 2004年第12期47卷 1127-1133页

作者： REN Shoumai 1,2 ,ZHU Rixiang 1 ,HUANG Baochun 1 ,ZHANG Fuqin 1 & WANG Hongqiang 1 1.institute of geology and geophysics,chinese academy of sciences,beijing 100029,China 2.Strategic Research Center for Oil and Natural Gas,The Ministry of Land and Resources of China,beijing 100034,China 1. Strategic Research Center for Oil and Natural Gas The Ministry of Land and Resources of China 100034 Beijing China 2. chinese academy of sciences Institute of Geology and Geophysics 100029 Beijing China

We report paleomagnetic results for Early Cretaceous lava flows collected from the Suhongtu area of Inner Mongolia, the middle part of the Tianshan-Mongolia Fold Belt (TMFB). Rock-magnetic experiments for different lava flows indicate that the main magnetic mineral is pseudo-single-domain (PSD) magnetite. The characteristic high-temperature remanence com- ponent is isolated by thermal demagnetization temperature steps between 300°C and 585"C, which yields a mean direction of D = 23.6°, I=56.0° with α 95 = 2.3°. We interpret this high-temperature remanence component as primary magnetization based mainly upon the petrographic analysis, which shows that the shape of magnetite crystal is relatively rounded square or polygon without internal reflection and deuterogenous phenomenon. The correspond- ing pole of the high-temperature remanence component is at 71.1°N, 200.5°E with A 95 = 2.7°. This Early Cretaceous pole is in good agreement with those for Siberia, North China, and Inner Mongolia, suggesting that these continental blocks had already sutured together in the Early Cretaceous, which would further provide constraints on better understanding of the formation and evolution of the TMFB.

关键词： orogenic belt, paleomagnetism, Suhongtu of Inner Mongolia, Eurasia.

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