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On the siltation of the middle Yangtze River

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Science china Earth Sciences 2004年第5期47卷 463-480页

作者： YIN Hongfu1, CHEN Guojin2. LI Chang抋n1 & WEI Yuan3 1. School of Earth Sciences, china University of Geosciences, Wuhan 430074, china 2. Hydrogeological {2., Hubei bureau of geology and mineral resources, Jingzhou 434100, china 3. Geological Survey of Jiangxi Province, Nanchang 3302.1, china china Univ Geosci Sch Earth Sci Wuhan 430074 Peoples R China Hubei Bur Geol & mineral resources Hydrogeol Team Jinzhou 434100 Peoples R China Geol Survey Jiangxi Province Nanchang 3300201 Peoples R China

About 5.2.108 t/a of silts from the upper reach of the Yangtze River are transported through Yichang into the middle Yangtze River. The middle Yangtze itself and its tributaries yield ca. 0.8×108 t silts annually. Of this total 6×108 t/a input of silts, ca. 1.2.108 t/a are deposited within the river artery and lakes, while ca 4.83×108 t/a are at first transported into the lower reach through Datong, and then either deposited along the river and the Yangtze Delta, or output into the sea. Along the middle Yangtze River silting generally exceeds scouring, but the spatial and temporal distributions of scour-and-fill, as well as its distribution in the river valley transections, are uneven. Along the Yichang-Chenglingji and Jiujiang-Datong Segments of the middle Yangtze, scouring exceeds or equals silting. Silting mainly occurs along the Luoshan-Wuhan-Huangshi Segments with Wuhan as the pivotal point, as well as in the Dongting and Poyang Lakes. Even in these silting-dominated areas, there are times and parts of segments that scouring prevails. As to the transections, generally the river channel of main stream is scouring-dominated, forming V-shaped sections to a depth of 2.30 m or more, whereas the floodplains and bar islands are silting-dominated, forming wide and relatively high flats, which are often artificially transformed into protected embankments. Because the Jingjiang Levee separates the Jianghan Plain from Yangtze to the south, little has been deposited in that plain except a few sediments from the Han River—a tributary of the middle Yangtze. This factor plus the tectonic sag of that plain has made the altitude of plain surface several meters lower than that of the levee in most of the areas. Sil-tation along the Luoshan-Wuhan-Huangshi Segments has resulted in the elevation of flood level in this and upstream segments. River channel scouring plus floodplain silting have caused the transections of the middle Yangtze valley typically with deep channel and height

关键词： the middle Yangtze, scour-and-fill, siltation, silt utilization.

CHARACTERISTICS　OF　MODERATE－SMALL－SIZE　INTERMONT　BASINS　STRUCTURES　AND　PROSPECTS　FOR　OIL－GAS　EXPLORATION　IN　TIANSHAN　MOUNTAIN　STRUCTURAL　BELTS

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新疆石油地质 1996年第1期 85-93页

作者： Yu Renlian Yang Shusheng(Ceologic team,no.thwestern Petroleum {2. bureau,Ministry of Ceology and mineral resources,Urumqi 830011) Han Jun

ＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳＯＦＭＯＤＥＲＡＴＥ－ＳＭＡＬＬ－ＳＩＺＥＩＮＴＥＲＭＯＮＴＢＡＳＩＮＳＳＴＲＵＣＴＵＲＥＳＡＮＤＰＲＯＳＰＥＣＴＳＦＯＲＯＩＬ－ＧＡＳＥＸＰＬＯＲＡＴＩＯＮＩＮＴＩＡＮＳＨＡＮＭＯＵＮ... 详细信息

ＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳＯＦＭＯＤＥＲＡＴＥ－ＳＭＡＬＬ－ＳＩＺＥＩＮＴＥＲＭＯＮＴＢＡＳＩＮＳＳＴＲＵＣＴＵＲＥＳＡＮＤＰＲＯＳＰＥＣＴＳＦＯＲＯＩＬ－ＧＡＳＥＸＰＬＯＲＡＴＩＯＮＩＮＴＩＡＮＳＨＡＮＭＯＵＮＴＡＩＮＳＴＲＵＣＴＵＲＡＬＢＥＬ...

关键词： Xinjiang Tianshan Mountain Intermont depression Structural feature Oil-gas exploration

CALCISPONGES AND HYDROZOANS FROM PERMIAN REEFS IN WESTERN GUANGXI

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古生物学报 2002年第3期 343-348页

作者： FAN Jia Song 1) , WANG Yu Mao 2. , and WU Ya Sheng 1) 1) Institute of geology and Geophysics, the Chinese Academy of Sciences, Beijing 10002. 2. The second geological team, Guangxi{2., Nanning 53000

ＳｕｍｍａｒｙＴｈｅｐｒｅｓｅｎｔｐａｐｅｒｄｅｓｃｒｉｂｅｓｂｒｉｅｆｌｙｓｏｍｅｇｅｎｅｒａｌｆｅａｔｕｒｅｓｏｆｔｈｅＰｅｒｍｉａｎｒｅｅｆｓｅｘｐｏｓｅｄｉｎＴｉａｎｌｉｎ ,ＬｉｎｇｙｕｎａｎｄＦｅｎｇｓｈａ... 详细信息

ＳｕｍｍａｒｙＴｈｅｐｒｅｓｅｎｔｐａｐｅｒｄｅｓｃｒｉｂｅｓｂｒｉｅｆｌｙｓｏｍｅｇｅｎｅｒａｌｆｅａｔｕｒｅｓｏｆｔｈｅＰｅｒｍｉａｎｒｅｅｆｓｅｘｐｏｓｅｄｉｎＴｉａｎｌｉｎ ,ＬｉｎｇｙｕｎａｎｄＦｅｎｇｓｈａｎｃｏｕｎｔｉｅｓ,Ｇｕａｎｇｘｉ,ｗｈｅｒｅａｂｕｎｄａｎｔｆｒａｍｅｂｕｉｌｄｉｎｇｏｒｇａｎｉｓｍｓｉｎｃｌｕｄｉｎｇｃａｌｃｉｓｐｏｎｇｅｓ,ｈｙｄｒｏｚｏａｎｓａｎｄｏｔｈｅｒｓａｒｅｗｅｌｌｐｒｅｓｅｒｖｅｄ .7ｇｅｎｅｒａｏｆｓｐｈｉｎｃｔｏｚｏａｎｓｐｏｎｇｅｓ,3ｇｅｎｅｒａｏｆｉｎｏｚｏａｎｓｐｏｎｇｅｓ ,ｏｎｅ“ｈｙｄｒｏｚｏａｎ”ｇｅｎｕｓａｎｄａｆｅｗｒｅｃｅｐｔａｃｕｌｉｔｉｄｓａｒｅｄｅｓｃｒｉｂｅｄｈｅｒｅ .Ｔｈｅｓｐｈｉｎｃｔｏｚｏａｎｓｉｎｃｌｕｄｅｔｈｅｆｏｌｌｏｗｉｎｇｇｅｎｅｒａ :Ｓｔｙｌｏｔｈａｌａｍｉａ ,Ｌｉｃｈｕａｎｏｓｐｏｎｇｉａ ,Ｔｅｂａｇａｔｈａｌａｍｉａ ,Ｉｍｂｒｉｃａｔｏｃｏｅｌｉａ ,Ｉｎｔｒａｓｐｏｒｅｏｃｏｅｌｉａ ,ＲｈａｂｄａｃｔｉｎｉａａｎｄＬｉｎｇｙｕｎｏｃｏｅｌｉａ .ＴｈｅｉｎｏｚｏａｎｓｐｏｎｇｅｓａｒｅＰｅｒｏｎｉｄｅｌｌａ ,ＩｎｔｒａｔｕｂｏｓｐｏｎｇｉａａｎｄＣａｖｕｓｏｎｅｌｌａ .ＴｈｅｈｙｄｒｏｚｏａｎｓａｒｅｒｅｐｒｅｓｅｎｔｅｄｏｎｌｙｂｙｏｎｅｇｅｎｕｓＲａｄｉｏｔｒａｂｅｃｕｌｏｐｏｒａｉｎｃｌｕｄｉｎｇ 3ｓｐｅｃｉｅｓ.Ｗｉｔｈｉｎｔｈｅｓｅｆｏｒｍｓ,Ｌｉｎｇｙｕｎｏｃｏｅｌｉａｓｐｈｅｒｉｃａｉｓｅｓｔａｂｌｉｓｈｅｄｈｅｒｅａｓａｎｅｗｇｅｎｕｓａｎｄａｎｅｗｓｐｅｃｉｅｓ ,ｗｈｉｌｅＬｉｃｈｕａｎｏｓｐｏｎｇｉａｇｕａｎｇｘｉｅｎｓｉｓｉｓｒｅｇａｒｄｅｄａｓａｎｅｗｓｐｅｃｉｅｓ .ＡｌｌｏｆｏｔｈｅｒｆｏｒｍｓｍｅｎｔｉｏｎｅｄａｂｏｖｅｗｅｒｅｆｏｕｎｄｕｓｕａｌｌｙｉｎｔｈｅＰｅｒｍｉａｎｒｅｅｆｓｏｆＳｏｕｔｈＣｈｉｎａ .ＳｅｎｏｗｂａｒｉＤａｒｙａｎ(1990 ) ｐｒｏｐｏｓｅｄｔｈａｔｔｈｅＣｙｓｔａｕｌｅｔｅｓ,ＡｓｃｏｓｙｍｐｌｅｇｍａａｎｄＬｉｃｈｕｎｏｓｐｏｎｇｉａｓｈｏｕｌｄｂｅｓｕｂｓｔｉｔｕｔｅｄｂｙｅａｒｌｉｅｒｅｓｔａｂｌｉｓｈｅｄｇｅｎｕｓＤｉｓｃｏｓｉｐｈｏｎｅｌｌａＩｎａｉ (1936 ) ,ｂｕｔＬｉｃｈｕａｎｏｓｐｏｎｇｉａｉｓｑｕｉｔｅｄｉｆｆｅｒｅｎｔｆｒｏｍＤｉｓｃｏｓｉｐｈｏｎｅｌｌａｂａｓｅｄｏｎｇｅｎｅｒａｌｓｈａｐｅｓ,ｏｕｔｌｉｎｅｓｏｆｃｈａｍｂｅｒｓａｎｄｔｈｅａｂｓｅｎｃｅｏｆｖｅｓｉｃｕｌａｒｔｉｓｓｕｅｉｎｔｈｅｃｅｎｔｒａｌｔｕｂｅｓ,ｔｈｅｒｅｆｏｒｅＬｉｃｈｕａｎｏｓｐｏｎｇｉａｉｓｒｅｇａｒｄｅｄｓｔｉｌｌａｓａｎｉｎｄｅｐｅｎｄｅｎｔｇｅｎｕｓｗｉｔｈｉｎｔｈｅｓｐｈｉｎｃｔｏｚｏａｎｓ.ＴｈｅｎｅｗｇｅｎｕｓＬｉｎｇｙｕｎｏｃｏｅｌｉａｈａｓｓｏｍｅｃｏｍｍｏｎｓｉｍｉｌａｒｉｔｉｅｓｗｉｔｈＳｏｌｌａｓｉａａｎｄＧｉｒｔｙｏｃｏｅｌｉａ ,ｂｕｔｔｈｅａｂｓｅｎｃｅｏｆｐｏｒｅｓａｎｄｔｕｂｅｓｏｆｖａｒｉｏｕｓｋｉｎｄｓｏｎｔｈｅｗａｌｌｓｏｆｓｐｈｅｒｉｃａｌｃｈａｍｂｅｒｓｃａｎｎｏｔｂｅｐｅｒｍｉｔｔｅｄｔｏｉｎｃｌｕｄｅｔｈｅｐｒｅｓｅｎｔｎｅｗｆｏｒｍｉｎｔｏｅｉｔｈｅｒｏｆｔｗｏｇｅｎｅｒａ ,ｔｈｅｒｅｆｏｒｅａｎｅｗｇｅｎｕｓｉｓｅｓｔａｂｌｉｓｈｅｄｈｅｒｅｆｏｒｔｈｉｓｆｏｒｍ .ＩｎｔｈｉｓｐａｐｅｒｔｈｅｇｅｎｕｓＲａｄｉｏｔｒａｂｅｃｕｌｏｐｏｒａｉｓｓｔｉｌｌｖｉｅｗｅｄａｓａｇｅｎｕｓｗｉｔｈｉｎｔｈｅｈｙｄｒｏｚｏａｎｃｌａｓｓｒａｔｈｅｒｔｈａｎｔｈｅＩｎｏｚｏａｎｏｒｄｅｒｂｅｃａｕｓｅＲａｄｉｏｔｒａｂｅｃｕｌｏｐｏｒａｉｓｃｈａｒａｃｔｅｒｉｚｅｄｂｙｔｈｅｉｒｒａｔｈｅｒｒｅｇｕｌａｒｄｉｓｔｒｉｂｕｔｉｏｎｏｆｒａｄｉａｌｔｒａｂｅｃｕｌａｅ .Ｔｈｅｓｅｔｒａｂｅｃｕｌａｅｃａｎｎｏｔｂｅｃｏｎｓｉｄｅｒｅｄａｓｆｉｂｒｅｓｏｆｉｎｏｚｏａｎｓｐｏｎｇｅｓ,ａｎｄｔｈｏｓｅｅｘｈａｌａｎｔｔｕｂｅｓａｒｅｒｅｇａｒｄｅｄｈｅｒｅａｓｃａｎａｌｓｂｅｔｗｅｅｎｔｗｏｔｒａｂｅｃｕｌａｅ

关键词： Sphinctozoan Ino.oan Hydrozoan reefs Permian Guangxi chinaSummary The present paper describes briefly some general features of the Permian reefs exposed in Tianlin Lingyun and Fengshan counties where abundant framebuilding org

Discovery of Cu-Zn,Cu-Sn intermetallic minerals and its significance for genesis of the Mianning-Dechang REE Metallogenic Belt,Sichuan Province,china

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Science china Earth Sciences 2006年第6期49卷 597-603页

作者： XIE Yuling1, HOU Zengqian2. XU Jiuhua1, YUAN Zhongxin2. BAI Ge2.& LI Xiaoyu3 1. Civil and Environmental Engineering School, University of Science and Techno.ogy Beijing, Beijing 100083, china 2. Institute of {2., Chinese Academy of Geological Sciences, Beijing 100037, china 3. The 109th Geological team, Sichuan bureau of mineral Exploration, Chengdu 610100, china 1. Civil and Environmental Engineering School University of Science and Technology Beijing Beijing 100083 China 2. Institute of geology Chinese Academy of Geological Sciences Beijing 100037 China 3. The 109th Geological team Sichuan Bureau of Mineral Exploration Chengdu 610100 China

Mianning-Dechang Himalayan REE Metallogenetic Belt in Sichuan Province lies along the western margin of the Yangtze Craton. We have conducted detailed mineralogical studies on ore minerals collected from Maoniuping and Dalucao, the two largest deposits in the belt. With optical microscope, SEM/EDS, and EPMA, three rare intermetallic minerals, i.e., zinccopperite (Cu2.n), Sn- bearing native copper, and Cu-bearing jupiter were found to occur in the main ore along with barite, fluorite, apatite, sulfide and bastnaesite. Since the conditions under which zinccopperite and Sn- bearing native copper formed are quite unique, finding of these minerals, for the first time in domestic REE deposits, has significant implications for the genesis of the ore deposits in which they occur. In comparison with Cu-Zn intermetallic minerals in other occurrences, we propose that the formation of this REE metallogenetic belt is associated with fast upwelling of the Himalayan magma from deep source.

关键词： Mianning-Dechang REE metallogenetic belt, Cu-bearing intermetallic minerals, EPMA, genesis significance, deep source magmatic activity.

Mammal-bearing Pleistocene deposits,Vranic,southwestern Panno.ian Basin System

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Journal of Palaeogeography 2024年第3期13卷 430-452页

作者： Adriano.Banak Zsòfia Ruszkiczay-Rüdiger Anita Grizelj Martina Đuras Kresimir Petrinjak ASTER team Alexander Wieser Monika Milosevic Davor Pavelic Department of geology Croatian Geological SurveyMilana Sachsa 2HR-10000 ZagrebCroatia Institute for Geological and Geochemical Research HUN-REN Research Centre for Astronomy and Earth Sciences(MTA Centre of Excellence)Budaorsi Street 451112 BudapestHungary The Faculty of Veterinary Medicine University of ZagrebHeinzelova 55HR-10000 ZagrebCroatia CEREGE CNRS-IRD-College de France-INRAE UM34Aix-Marseille UniversiteAix-en-ProvenceFrance Faculty of Physics-Isotope Physics University of ViennaWahringer Straße 171090 ViennaAustria Faculty of Mining Geology and Petroleum EngineeringUniversity of ZagrebPierottijeva 6HR-10000 ZagrebCroatia

Vranic site is a sand quarry that is located on the southern foothills of Papuk *** bottom to top of the succession,three sedimentary units have been recognized as:Unit 1 containing massive sand with scattered gravel-sized clasts,marl cobbles and boulders,and abundant marine mammal and fish fossils;Unit 2.consisting of sand intercalated with silt,clay and gravel,which may be horizontally bedded;and Unit 3,which is an erosionally-based lenticular matrix to clast-supported structureless *** basal part of Unit 1 shows numerous reworked skeletal remains of Miocene marine *** radionuclides constrain the age of burial of Unit 1 to 895±2.1 ka,while the source area of Unit 1 had a quick *** massive sands deposited on the slopes of Papuk Mountain were vulnerable to erosion due to the absence of *** rainfall or water from sno. melting created flash floods that infiltrated the sands,thereby causing slope destabilization and *** process led to slumps that were transformed into a sandy debris *** sediment was probably deposited during the interglacial marine isotope age(MIS)2. period when the scarce vegetation and a warmer climate favored the melting of permafrost ice and consequently triggered slope movements during MIS *** reworked skeletal material sampled at the Vranic site comprises fossilized fish along with mammal bones and ***,the Vranic site represents an important site for cetacean fossil remains and serves as an important data source for marine life in the Central Paratethys.

关键词： Miocene marine mammals Alluvial slope deposit Pleistocene Cosmogenic nuclides Panno.ian Basin System

Microwave Sintering of Al_2._3-ZrO_2.WC-Co Cermets

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Journal of Wuhan University of Techno.ogy(Materials Science) 2011年第2期26卷 290-292页

作者：谷天本陆洪智 Faculty of Engineering China University of Geosciences Third Geological Prospecting team Henan Geology and Mineral BureauLuoyang 471023China

Composite powders of nano.rystalline WC-10Co （15wt%）,Y2.3 （8mol%） stabilized nano.rystalline ZrO2.（30wt%）,industrial cobalt powder （4.5wt%） and submicron Al2.3 （55wt%） composite powders were fabricated by high-energy ball-milling *** nano.omposite powders were consolidated by microwave sintering process at temperature ranged 1300℃-1550℃ for 15min,*** optimum consolidation conditions,such as temperature,were researched during microwave sintering *** Hardness of the consolidated cermets was measured by using a Vickers indentation test,and density of specimens was also determined by Archimedes＇ *** sintering process could no. only increase the density of Al2.3-ZrO2.WC-Co cermets and reduce the porosity,but also inhibit abno.mal grain growth.

关键词： Al2.3-ZrO2.WC-Co cermets microwave sintering high-energy ball-milling

Ancient Changjiang channel system in the East china Sea continental shelf during the last glaciation

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Science china Earth Sciences 2005年第11期48卷 1972-1978页

作者： LI Guangxue1,2. LIU Yong1, YANG Zigeng3, YUE Shuhong4, YANG Wenda5 & HAN Xibin1 1. College of Marine Geo-science, Ocean University of china, Qingdao 2.6003, china 2. Shandong Key Laboratory of Sea Floor Resource and Exploration Technique, Qingdao 2.6003, china 3. Qingdao Institute of Marine geology, Qingdao 2.6071, china 4. College of Marine Environment, Ocean University of china, Qingdao 2.6003, china 5. First Survey team of Marine geology, Shanghai bureau of Petroleum, Shanghai 2.12.8, china 1. College of Marine Geo-science Ocean University of China 266003 Qingdao China 2. Shandong Key Laboratory of Sea Floor Resource and Exploration Technique 266003 Qingdao China 3. Qingdao Institute of Marine geology 266071 Qingdao China 4. College of Marine Environment Ocean University of China 266003 Qingdao China 5. First Survey team of Marine geology Shanghai Bureau of Petroleum 201208 Shanghai China

Based on the data of high-resolution seismic profiles, an ancient river channel sys-tem of the last glaciation occurred along the Zhedong and Xihu depression in the southeast of Hupijiao rise. The distribution of the channel fill system shows that the ancient Changjiang River went through the Changjiang depression into the low land plain of the outside continental shelf during the low sea level cycle of the last glaciation. The big channel fill into Okinawa Trough is no. found due to the depletion of the river kinetic energy in the low land plain. The river discharge dispersal was of an important role to the dilution of the no.thern Okinawa Trough sea at that time. Six ancient river channel systems (A―F), which are main distributaries of ancient Changjiang in the East{2. Sea continental shelf during the last glaciation, may be buried off the modern Changjiang estuary. The distribution of these channels coincides with the zonal elevations in the sea floor.

关键词： last glaciation, continental shelf plain, Changjiang River, ancient channel fill

An Investigation of Deep Electrical Structure of Qiangtang Basin,Xizang(Tibet),china

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Journal of Earth Science 1995年第2期14卷 92-96页

作者： Zhang Shengye Wei Sheng Wang JiayingDepartment of Applied Geophysics, china University of Geosciences, Wuhan 430074Zhang Xianjue5th Geophysical Prospecting team of Central South {2. of Petroleum geology , Ministry oj geology and mineral resources, X

In order to study the deep geoelectrical structure and the regional geological structure and detect potential oil and gas areas in Qiangtang basin in no.thern Xizang (Tibet ), 2.2.MT soundings were conducted along three N - S MT profiles across the basin .The MT results indicate that the south and no.th parts of the Qiangtang basin have a good contrast in the deep electri cal structure . In the south Qiangtang , there are generally two high conductivity layers in the crust . The first is at a depth of about 10 - 2. km and possesses a resistivity of about 10 - 80 Ωm .The second ,the high conductivity layer in the lower crust ,is at a depth of about 40 - 70 km with 3 - 50 Ωm .In the no.th Qiangtang .there is generally one high conductivity layer .It is at a depth of about 10 - 30 km and the resistivity is about 1-60 Ωm . The thickness of the second high conductivity layer in both the south Qiangtang and the Bangong-Nujiang suture is much greater than that of the first .The thickness of the lithosphere is about 110-12. km for the Bangong-Nujiang suture ,115 km for the south Qiangtang and 100-130 km for the no.th Qiangtang . On the difference of the deep electrical structures of the crust between the south and the no.th Qiangtang , we believe that it is related to the eastward flow of the crustal substance .

关键词： MT profile Qiangtang basin deep electrical structure crust and upper man-tle high conductivity layer .

COUNTERMEASURES AGAINST LANDSLIDE GEOLOGICAL DISASTERS IN TIBET

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Natural Disaster Reduction in china 2002年第4期 37-41页

作者： Yang Quanzhong (no. 915 Hydrogeological team, {2. of geology & Mining, Meishan 62.010, Sichuan Province, china)

The special natural geographical and geological environment of Tibet, in combination with increasingly intensified human (engineering and econo.ic) activities, is responsible for the increasingly serious landslide disasters in terms of scope, scale, frequency and degree of damage. The article presents systematically the development, distribution and major damaging effects of landslide geological disasters in Tibet, provides a preliminary forecast on the tendency of landslide formation, and proposes some strategies and measures for preventing & reducing the disasters. It may serve as a basis for decision making by governments at various levels in their fighting against landslide disasters.

关键词： Tibet landslide disasters countermeasures