THE CENOZOIC GEORECORDS IN THE NORTHWEST OF YUNNAN AND THE EVOLUTION OF QING—ZANG PLATEAU

THE CENOZOIC GEORECORDS IN THE NORTHWEST OF YUNNAN AND THE EVOLUTION OF QING—ZANG PLATEAU     

THE UPWARPING AND DOWNWARPING STRUCTURAL SYSTEM OF MOHO—SURFACE IN CHINESE AND NEAR REGION AND THE GENETIC MECHANICS OF QINGHAI—TIBET PLATEAU TECTONIC

THE UPWARPING AND DOWNWARPING STRUCTURAL SYSTEM OF MOHO—SURFACE IN CHINESE AND NEAR REGION AND THE GENETIC MECHANICS OF QINGHAI—TIBET PLATEAU TECTONIC     

PALEOMAGNETIC ESTIMATE OF THE MESOZOIC—CENOZOIC LATITUDINAL DISPLACEMENT OF TERRENES IN THE QINGHAI—TIBET PLATEAU AND ITS SIGNIFICANCE

PALEOMAGNETIC ESTIMATE OF THE MESOZOIC—CENOZOIC LATITUDINAL DISPLACEMENT OF TERRENES IN THE QINGHAI—TIBET PLATEAU AND ITS SIGNIFICANCE1　QianFang ,PreliminarystudyonthehorizontalmovementofNgariarea ,Tibet,sincePliocene[A].AbstractfromInterna tionalSymposiumonHimalayaGeologySciences[C].1984,2 49～ 2 5 0 . 2　JiangChunfa .OpeningandclosingstructuresofKunlun[M ].Beijing :GeologicalPublishingHouse ,1992 ,15 4～ 2 17. 3　XuZhiqin ,…     

STYLE AND CONSEQUENCE OF STRAIN PARTITION IN THE NORTHEAST MARGIN OF QINGHAI—TIBET PLATEAU

STYLE AND CONSEQUENCE OF STRAIN PARTITION IN THE NORTHEAST MARGIN OF QINGHAI—TIBET PLATEAU     

IN CELEBRATION OF THE 30TH ANNIVERSARY OF THE ESTABLISHMENT OF XI''''AN INSTITUTE OF GEOLOGY AND MINERAL RESOURCES

In order to strengthen geological researches and to concentrate superiorforces on solving major and important problems in key geological researchprojects, the Ministry of Geology decied to amalgamate the institutes ofShaanxi, Gansu, Ningxia, Qinghai and Xinjiang Provinces (AutonomousRegions), and in October, 1962 the Northwest Institute of Geological Sciences,affiliated then to the Ministry of Geology, was officially established     

TYPES AND GENESIS OF THE IRON DEPOSITS IN SOUTHERN ANHUI

In the province of Anhui along the Yangtze River, especially on the south of it there occur many iron deposits. They have been described in "The Iron ore deposits and iron industry of China" by Dr. F. R. Tegengren published by the Geological Survey in the Memoir Series A, No. 2. However Dr.     

CHARACTERIZATION OF DEFORMATION AND X-RAY PETROFABRICS IN THE MIDDLE PART OF THE WAHONGSHAN FAULT ZONE, QINGHAI PROVINCE, NORTHWESTERN CHINA

The Wahongshan fault zone in Qinghai province is one of the most important faults in westem China. In this paper, deformation and X-ray petrofabrics have been studied in the middle segment of the fault. The results show that the formation of the fault zones can be divided into two major stages: ductile shear deformation stage and brittle deformation stage. The early stage ductile shearing leads to the formation of the NW-NNW trending mylonite zones along the fault, which is intensely cut by the late-formed brittle faults. X-ray petrofabrics of rocks near the faults indicate that the minerals in the tectonites show a great degree of orientation in the alignment. The quartz, which is a very important mineral in the tectonites, is deformed by basal face gliding or near basal face gliding, and sometimes by prismatic face sliding, which indicates that the rocks are deformed in epithermal to mesothermal or mesothermal environment, and the dynamic recrystallization also plays an important role in the formation     

FORMATION AND EVOLUTION OF THE CENOZOIC THRUST FOLD BELT IN JINPING, SICHUAN

The Jinping orogenic belt in Sichuan, China consists mainly of the Jinpingshan intracontinental thrust-nappe belt, foreland thrust-nappe belt and foreland uplift belt. Based on analyses about the characteristics of the structural units in this area, the authors propose in this paper that Chapuzi-Bazhe revival fault belt is the regional boundary fault, and points out that after the formation of the Pre-Sinian basement, the western edge of the Yangtze paraplatform was turned into the passive continental margin in Sinian to Triassic, then into the Mesozoic collision orogenic belt, and finally into the Cenozoic orogenic belt through intracontinental orogeny.     

PRESSURE GRADIENT FROM THE CONTRIBUTION OF BOTH GEOTHERMAL AND GRAVITY IN THE LITHOSPHERE

1 Introduction The pressure, a scalar quantity, is defined as P = F/S (F is force, S is the area for F) which can be widely used for both solid and fluid. The formula P = g ρh (g-gravitation acceleration,ρ-density, h-depth) is only used for even density static solid and fluid. The delivery of pressure in the fluid follows the law of Pascal, and the average pressure of uneven density fluid can be calculated with the formula of P = g ρh. The temperature influence on pressure is notHU Ba…     

BULLETIN OF THE GEOLOGICAL SOCIETY OF CHINA——PROCEEDINGS OF THE EIGHTH ANNUAL MEETING OF THE GEOLOGICAL SOCIETY OF CHINA HELD IN NANKING,MAY 2,3,4,1931

The Annual Meetings of the past years were all held in Peiping. This was the first meeting held at Nanking at the invitation of National Central University. Fifty-four members were present, including Director W. H. Wong of the National Geological Survey, Prof. Y. C. Sun of National University, Peiping, Mr. T. O. Chu, acting Director of Geological Survey of Kwangtung and     

PALAEOZOIC TECTONIC PALAEOGEOGRAPHY OF THE CATHAYSIA IN EASTERN ZHEJIANG AND NORTHERN FUJIAN, CHINA

Based on the data about sedimentary facies and palaeogeography, this paper proves the existence of the Cathaysia (the part in eastern Zhejiang and northern Fujian, the same hereinafter) and makes a survey about its palaeogeography since Sinian Period. It also discusses the evolution of the tectonic environment of this region during Phanerozoic Eon, according to the features such as the composition of sandstones derived from the old land and alkalinity of volcanic rocks and so on. Continuous uplifting was maintained in Cathaysia during Sinian Period and Paleozoic Era, typically with no significant tectono-magmatic activity being observed. Its northwestern margin belongs to the type of passive continental margin during the middle and late phase of Caledonian Cycle. It showed the characteristics of a steady continent in late Paleozoic era, but was turned quickly into an active continental margin after the middle Jurassic period.     

SEDIMENTARY CHARACTERS AND DEPOSITIONAL MODELS OF THE UPPER SHA-Ⅲ MEMBER OF THE OLIGOCENESHAHEJIE FORMATION IN THE CENTRAL UPLIFT ZONE, HUIMIN DEPRESSION, CHINA

1.hitroductionThestUdyareaislocatedonthecentralupliftzoneinHuimindepression.HunmndepressioncoversaPProximately250kinZwithanearlyE-WstrikeandisdividedthedepressionintoZizhensubdepressioninthenorthandLinnansubdepressioninthesouth.Fig.IRegionalstrUctureacwelllocalihesofthestUdyareaItisborderedcloselybytheLing-clanrelief(Fig.l).TheOligoceneShahejieFonnationconsistsoffourmembers,Sha-I,Sha-II,Sha-ill,andSha-IVMembers(abbreviatedaSEsl,Es2,Es3,andEs4,respectively)fromtheuppertolower.Es3i…     

DETERMINATION OF THE FORMING PERIOD OF DIABASE IN THE NORTHERN SLOPE OF GAOYOU SAG AND IT''''S PETROLEUM GEOLOGIC SIGNIFICANCE

1.IfltroductionAlotofworkhasbeendoneonthequestionaboutthediabasefoeingperiodinnorthernslopeofGaoyousag.Duetomanyreasons,reliableresultisn'tavailablebyisotopicdating.Therefore,peoplehaven'tgotreliableabsoluteagedataasyet.Judgingfromdiabaseoccwrence,distributionhorizonandwhetherfaultdisplacesdiabaseindifferentperiods,geologistoftenconsiderthatthetWosetSofdiabaseofthetopandthebottommostlyinvadedinWubaoandSanduoevents.ThebottomdiabaserockbodydistributesmostlyinSegmentFu2(E,f2)andSegmentFu3(E,…     

AEOLIAN GEOMORPHICAL TYPES IN THE COASTAL AREAS OF THE BOHAI AND YELLOW SEAS AND THEIR EVOLUTION MODELS

ＡＥＯＬＩＡＮＧＥＯＭＯＲＰＨＩＣＡＬＴＹＰＥＳＩＮＴＨＥＣＯＡＳＴＡＬＡＲＥＡＳＯＦＴＨＥＢＯＨＡＩＡＮＤＹＥＬＬＯＷＳＥＡＳＡＮＤＴＨＥＩＲＥＶＯＬＵＴＩＯＮＭＯＤＥＬＳＦｕＭｉｎｇｚｕｏ，ＸｕＸｉａｏｓｈｉａｎｄＸｕＸｉａｏｗｅｉＦｉｒｓｔＩｎ...     

THE PARAMAGNETIC RESONANCE AND CARBON ISOTOPE FEATURES OF THE CRUDE OIL AND SOURCE ROCKS IN ZHUNGEER BASIN

The sedimentary area of Zhungeer Basin is about 130,000 km ₂and its sedimentary rocks from Carboniferous till Latter Tertiary are 2,000m in maximum thickness.Owing to the long一termandstablesinkingdominatingoverthebasinandtheinflueneeoftherift一differential movement in the basin,different011一formingdepressionswereformedindifferentgeologiealperiods.     

ON THE NEW FINDS OF FOSSIL EGGS OF STRUTHIO ANDERSSONI LOWE IN NORTH CHINA WITH REMARKS ON THE EGG REMAINS FOUND IN SHANSI,SHENSI AND IN CHOUKOUTIEN

In the Museum of the Geological Survey only a single complete speci-men of a fossil egg of Struthio is exhibited.This specimen came from Ssushui(汜水) and it was described briefly by J.G.Andersson in his "Essays on theCenozoic of Northern China."~1 The othe     

DISCOVERY OF RADIOLARIAN FOSSILS IN THE CHERT GRAVELS OF TRIASSIC CONGLOMERATE IN THE WEST OF SOUTH TIANSHAN, NW CHINA

1. Introduction Kurgan, a frontier station in the south foot of the Southwest Tianshan Mountains, is located on the NW margin of the Tarim Basin (Fig. 1). The Mesozoic coal-bearing molasses there is the most west Mesozoic outcrop of the Kuqa Depression, a tectonic unit of Tarim and its adjacent area. It is very difficult for geologist to access there. This results in the lack of geological works in this area. Meanwhile, only a few petroleum exploration works have been accomplished in t…     

FINITE STAIN MEASUREMENT AND SHORTENING ANALYSIS IN THE NORTHERN MARGIN OF QINGHAI—TIBET PLATEAU

FINITE STAIN MEASUREMENT AND SHORTENING ANALYSIS IN THE NORTHERN MARGIN OF QINGHAI—TIBET PLATEAU     

TECTONIC STYLES IN THE SOUTHWEST QINLING AND RELATIONS WITH DYNAMICS OF QINGHAI—TIBET PLATEAU

TECTONIC STYLES IN THE SOUTHWEST QINLING AND RELATIONS WITH DYNAMICS OF QINGHAI—TIBET PLATEAU     

PETROGRAPHIC SUBDIVISION AND SEDIMENTARY ENVIRONMENTS OF THE CAMBRIAN CARBONATE ROCKS IN THE XIADONG AREA

1. Introduction The most developed area of Cambrian carbonate rocks in China is the Xiadong area in the west of Hubei Province, including Yichang, Zigui, Changyang and Yidu . In this area Cambrian carbonate rocks are well exposed and have various types of carbonate rock containing abundant fossils. One of the standard sections of Chinese Cambrian is also in this area. As early as in the early 20th century, a few foreign scholars, such as Pumpeuy, Richtuofeu, Willes, have made geologica…