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Criteria for defining and recognizing the various orders of sequences in outcrop sequence stratigraphy

Science china Earth Sciences 2004年第7期47卷 618-629页

作者： WANG Xunlian Faculty of Earth Sciences and mineral resources,{2., Beijing 100083, china state key laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 2.0008, china 1. Faculty of Earth Sciences and mineral resources China University of Geosciences 100083 Beijing China 2. state key {2. of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences 210008 Nanjing China

The regional distribution in different depositional facies belts is here regarded as an important criterion for defining and recognizing the various orders of sequences. The third-order sequence is possibly global in nature, which may be discerned in different depositional facies belts in one continental margin and can be correlated over long distances, sometimes even worldwide. Commonly, correlation of subsequence (fourth-order sequence with time interval of 0.51.5 Ma) is difficult in different facies belts, although some of them may also be worldwide in distribution. A subsequence should be able to discern and correlate within at least one facies belt. The higher-order sequences, including microsequence (fifth-order sequence) and minisequence (sixth-order sequence), are regional or local in distribution. They may reflect the longer and shorter Milankovitch cycles respectively. Sequence and subsequence are usually recognizable in different facies belts, while microsequence and minisequence may be distinguished only in shallow marine deposits, but not in slope and basin facies deposits. A brief discussion is made on the essential conditions for correct identification of sequences, useful methods of study, and problems meriting special attention in outcrop sequence stratigraphy.

关键词： outcrop sequence stratigraphy, facies belt, sequence, subsequence, microsequence, minisequence, meter-scale cyclothem, Milankovitch cycle.

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Hydrocarbon Reservoir Model of Glutenite in the Fourth Member of Shahejie Formation in Northern Dongying Depression

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地学前缘 2009年第S1期16卷 136-137页

作者： Hui Liu~(1,2.,Yingchang Cao~3,Yanzhong Wang~3 1.state key {2. of geological processes and mineral resources,china university of geosciences,Beijing 100083, china. 2.School of Energy resources,china university of geosciences(Beijing),Beijing 100083,china 3.Faculty of Geo-resources and Information,china university of Petroleum,Dongying 2.7061,china

The glutenite in the fourth member of Shahejie Formation(Es^4) in northern Dongying depression straightforwardly penetrated into the muddy bathyal -abyss *** conditions of reservoir is very superior:(1) the high quality thick bedded oil source rock is developed very well in the Lijin sag and Minfeng sag of the study area,and it has the higher capability of generating hydrocarbon;(2. the

关键词： glutenite hydrocarbon reservoir formation northern Dongying depression fourth member of Shahejie Formation

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Petrogenesis and significance of early Yanshanian syenite-granite complex in eastern Nanling Range

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Science china Earth Sciences 2005年第7期48卷 912-924页

作者： CHEN Peirong1, ZHOU Xinmin1, ZHANG Wenlan1, LI Huimin2. FAN Chunfang1, SUN Tao1, CHEN Weifeng1 & ZHANG Min1 1. state key {2. of mineral Deposits Research, Department of Earth Sciences, Nanjing university, Nanjing 2.0093, china 2. Tianjin Institute of Geology and mineral resources, china geological Survey, Tianjin 300170, china state key {2. of mineral Deposits Research Department of Earth Sciences Nanjing University Nanjing 210093 China Tianjin Institute of Geology and mineral resources China Geological Survey Tianjin 300170 China

In the eastern Nanling Range there exists the early Yanshanian syenite-granite assemblage. A representative example is the Pitou-Tabei complex composed of the Tabei syenite pluton and the Pitou syenogranite pluton in southern Jiangxi Province. U-Pb zircon dating yields ages of 188.6±2.2.Ma for the Tabei pluton and 186.3±1.1 Ma for the Pitou pluton. The Tabei syenite is characterized by relatively low SiO2.content (62.40% - 68.75%), high alkalis (K2.+Na2. = 10.56%-11.96%), low percent K2./Na2. ratios (0.56-0.93), metaluminous fea- ture (A/CNK = 0.80-1.00), enrichment in LILE (Rb, Ba, K) and HFSE (Th, U, Nb, Ta, Zr, and so on), weakly negative to positive Eu anomalies (δ Eu = 0.63-1.82., relatively low (87Sr/86Sr)i (0.70412.0.70543), and relatively high ε Nd(t) (3.14-3.52.. The Pitou syenogranite is charac- terized by high silicon content (SiO2.= 71.06%-76.2.%), relatively low alkalis (K2.+Na2. = 8.10%-9.80%), high percent K2./Na2. ratios (1.2.-1.94), metaluminous feature (A/CNK = 0.94-1.07), enrichment in Rb, Th (U), K, depletion in Ba, Nb, Ta, Sr, P , Zr, Ti, high ΣREE (av- eraging 451.03 μg/g), strong negative Eu anomalies (δ Eu = 0.2.-0.33), relatively high (87Sr/86Sr)i (0.70805-0.70912., and relatively low ε Nd( t ) (?5.35-?6.2.). The Tabei syenite and Pitou syenogranite both have the characteristics of A-type granites. The former is considered to be from the asthenosphere mantle, and the latter was the product of the crust-mantle mixture. They both were probably formed in a rifting setting.

关键词： syenite-granite assemblage single zircon U-Pb age rifting environment Nanling Range.

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Petrogenesis of Songshugou dunite body in the Qinling orogenic belt, Central china: Constraints from geochemistry and melt inclusions

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Science china Earth Sciences 2005年第8期48卷 1146-1157页

作者： SU Li1,2. SONG Shuguang3 & ZHOU Dingwu1 1. key laboratory of Continental Dynamics of the Ministry of Education, Department of Geology, Northwestern {2., Xi’an 710069, china 2. The geological Lab Center, china university of geosciences (Beijing), Beijing 100083, china 3. key laboratory of Orogenic Belts of the Ministry of Education, Department of Geology, Peking {2., Beijing 100871, china 1. key laboratory of Continental Dynamics of the Ministry of Education Department of Geology Northwestern University 710069 Xi’an China 2. The geological Lab Center China University of Geosciences 100083 (Beijing)Beijing China 3. key laboratory of Orogenic Belts of the Ministry of Education Department of Geology Peking University 100871 Beijing China

The Songshugou dunite body, which occupies an area of about 2. km2. is the largest ultramafic massif in the eastern Qinling orogenic belt, Central china. The major compo-nent of this body is dunitic rocks including mylonitic dunite and coarse-grained dunite; they oc-cupy about 95 vol% of the total body. Petrography, mineral composition, major and trace ele-ments and primitive melt inclusions have been investigated in this paper; all revealed that this dunite body is the product of melt-rock interaction by porous percolation flow. In comparison with dunite sills or veins in harzburgite from the basal part of Oman ophiolite, this dunite body is characterized by lower contents of Al2.3, CaO and HREE but higher content of highly incom-patible elements and Zr and Hf. The LREE enriched patterns and primitive mantle normalized spidergrams of trace elements are also different from the Oman dunite. Combining with melt in-clusions observed in olivines, we conclude that this dunite body is the product of large- scale porous percolation flow of high-MgO melts within depleted mantle peridotites. The high-MgO magma, in essence, was most probably produced at the hot head of an upwelling mantle plume. The occurrence of the Songshugou dunite body is closely associated with the activity of mantle super-plume in Neo-Proterozoic era in the Yangtze Craton.

关键词： Songshugou dunite body, geochemistry, melt inclusion, mantle plume, Qinling orogenic belt.

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3D geological Modeling with Multi-source Data Integration in Polymetallic Region:A Case Study of Luanchuan,Henan Province,china

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地学前缘 2009年第S1期16卷 166-167页

作者： Gongwen Wang~(1,2.,Shouting Zhang~(1,2.,Changhai Yan~3,Yaowu Song~3,Limei Wang~1 1.School of Earth Sciences and resources,china {2. of geosciences(Beijing),Beijing 100083,china. 2.state key laboratory of geological processes and mineral resources,china {2. of geosciences,Beijing 100083,china 3.Henan Institute of geological Survey,Zhengzhou 450007,china

The development of 3D geological models involves the integration of large amounts of geological data,as well as additional accessible proprietary lithological, structural,geochemical,geophysical,and borehole ***,the c... 详细信息

关键词： 3D geological modeling multi-source data mineral exploration metallogenic model virtual geological section Luanchuan polymetallic region

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薄互层弹性波反演面临的困境

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地球物理学报 2018年第3期61卷 1118-1135页

作者：王赟杨春芦俊中国地质大学(北京)地球物理与信息技术学院地质过程与矿产资源国家重点实验室北京100083

对于薄互层地震传播特征的研究我们已有了充分的认识,这是一种完全不同于现有的基于厚层单阻抗差界面地震反射理论的、具有频率依赖性的调谐反射.因而也使得对具有N层结构的弹性介质薄互层反演时,现有有限带宽的基于空间-频率域采样的... 详细信息

对于薄互层地震传播特征的研究我们已有了充分的认识,这是一种完全不同于现有的基于厚层单阻抗差界面地震反射理论的、具有频率依赖性的调谐反射.因而也使得对具有N层结构的弹性介质薄互层反演时,现有有限带宽的基于空间-频率域采样的地震观测难以规避多解性问题.长波长假设下的薄互层VTI近似似乎可以为我们提供一种待反演弹性参数只有5个的可行性方案,使得我们可以将薄互层背景下任一目标薄层的反演看作VTI厚层介质背景下单薄层的反演.但是,我们首先面临薄互层VTI近似的误差和适用性条件等问题;其次,既使对于单薄层厚度的反演,目前地震领域也未能提供一种通用有效的解决方案,实际地震勘探中薄层厚度的预测依然是一个悬而未决的难题.因此在此基础上再进行单薄层的物性参数、裂缝隙和流体的预测则更叠加了难以预知的多解性.显然单纯P波已难以应对,弹性波的介入成为必然;而且单薄层含裂缝与流体的预测更需要横波分裂和双相介质理论的支撑.可以预见的是,除了纵、横波速度,薄互层反射系数的频率依赖性是我们试图给出相对可靠的、单薄层物性精细刻画必须使用的一种重要地震属性.

关键词：薄互层 VTI 单薄层弹性波反演

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Apatite fission track evidences for Neogene tectono-thermal history in Nimu area,southern Gangdese terrane,Tibet plateau

Apatite fission track evidences for Neogene tectono-thermal ...

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第九届全国固体核径迹学术研讨会

作者： WANMING YUAN state key {2. of geological processes and mineral resources,china university of geosciences,Beijing,100083,china

The Gangdese terrane is between Yarlung Zangbo suture zone and Bangong-Nujiang suture zone and is also called as Gangdese tectono-magrnatic belt because of quite developed magrnatic rocks,～1500km long and～70-80km *** Neogene tectono-magmatic events were characterized by large scale of thrusting-nappe events (30-2. Ma),uplifting-denudation (2.-18 Ma),E-W trending stretching (18 Ma), S-N trending rifting (14-13.5 Ma) and post-collisional potassic-ultrapotassic magmatic activities (2.-10 Ma).However,a few data were related to the thermal history since late Miocene by now.

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Sr-Nd-Pb isotopes of the Early Paleozoic maficultramafic dykes and basalts from South Qinling belt and their implications for mantle composition

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Science china Earth Sciences 2007年第9期50卷 1293-1301页

作者： ZHANG ChengLi1,2. GAO Shan1, 2. YUAN HongLin1, ZHANG GuoWei1, YAN YunXiang1, LUO JingLan1 & LUO JinHai1 1 state key {2. of Continental Dynamics, Department of Geology, Northwest university, Xi’an 710069, china 2.state key {2. of geological Progresses and mineral resources, china university of geosciences,{12., china state key {2. of Continental Dynamics Department of Geology Northwest University Xi'an 710069 China state key {2. of geological Progresses and mineral resources China University of Geosciences Wuhan 430074 China state key {2. of Continental Dynamics Department of Geology Northwest University Xi'an 710069 China

Late Early Paleozoic mafic-ultramafic dykes and volcanic rocks from the South Qinling belt are char- acterized by εNd( t ) = +3.2.― +5.02. (87Sr/86Sr)i= 0.70341― 0.70555, (2.6Pb/2.4Pb)i = 17.2.6― 18.993, (2.7Pb/2.4Pb)i= 15.505―15.642. (2.8Pb/2.4Pb)i=37.12.―38.968, ?8/4=2..18―774.43, ?7/4=8.11―18.82. These charac- teristics suggest that they derived from a Middle Neoproterozoic mantle with isotopic compositions of mixed HIMU, EMII and minor EMI components. We interpret that these rocks were melting products of depleted mantle modified by subducted ancient oceanic crust and continental margin sediments along the northern margin of Yangtze block during Early Neoproterozoic.

关键词： mafic dykes Sr-Nd-Pb isotope mantle source South Qinling belt

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High-pressure synchrotron x-ray diffraction and Raman spectroscopic study of plumbogummite

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Chinese Physics B 2018年第1期27卷 541-546页

作者：康端巫翔袁冠黄圣轩牛菁菁高静秦善 key laboratory of Orogenic Belts and Crustal Evolution Ministry of Education School of Earth and Space SciencesPeking University state key {2. of geological processes and mineral resources China University of Geosciences

PbA13（PO4）2.OH,H2.）6, an important environmental mineral, is in-situ studied by synchrotron x-ray diffraction （XRD） and Raman scattering combined with diamond anvil cells （DACs） at pressures up to - 11.0 GPa and room temper- ature. The XRD results indicate that plumbogummite does not undergo a phase transition between 0 GPa and 10.9 GPa. Moreover, the c axis is more compressible than the a axis, revealing its anisotropic behavior. The pressure-volume data are fitted to the third-order Birch-Murnaghan equation of state to yield the plumbogummite bulk modulus K0 of 68（ I ） GPa and KU of 6.1. The [PO4]3 and [HPO4]2.Raman vibrational modes exhibit scale nearly linearly as a function of pressure. The [PO4]3 stretching modes are generally more sensitive to pressure than the bending modes. The Grfineisen parameters range from -0.07 to 1.19, with an arithmetic mean of approximately 0.39.

关键词： plumbogummite equation of state Grfineisen parameter diamond anvil cell

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Isotopic compositions of small shelly fossil Anabarites from Lower Cambrian in Yangtze Platform of South china: Implications for palaeocean temperature

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Progress in Natural Science:Materials International 2007年第10期17卷 1185-1191页

作者： Chen Yongquan1,2. Jiang Shaoyong1, Ling Hongfei1, Yang Jinghong1 and Wan Defan3(1. state key Laboatory for {2. Deposits Research and Center for Marine Geochemistry Research, Department of Earth Sciences, Nanjing university, Nanjing 2.0093, china 2. Tarim Oilfield Company Exploration & Development Research Institute, Ku’erle 841000, china 3. Institute of {2. resources, Chinese Academy of geological Sciences, Beijing 100037, china) state key Laboatory for {2. Deposits Research and Center for Marine Geochemistry Research Department of Earth Sciences Nanjing University Nanjing 210093 China arim Oilfield Company Exploration & Development Research Institute Ku’erle 841000 China Institute of mineral resources Chinese Academy of Geological Sciences Beijing 100037 China

Anabarites belong to small shelly fossils (SSF), which occur widely in the Lower Cambrian strata of Yangtze Platform in South china. They are phosphate shell in composition and represent the earliest stage of the Cambrian bioradiation of Bilateria, the so-called "Cambrian Explosion". In this study, we attempted to separate Anabarites fossils from Lower Cambrian dolostones, and we obtained samples of both the fossils (SSF) and the granular phosphates (GP). Isotopic analyses were performed on samples of SSF, GP, and matrix dolostone (DH-2.). The results showed that the δ30Si values of the quartz filling in fossils celoms, and the siliceous materials in granular phosphates are -0.6‰ and -0.7‰, which is different from normal sedimentary siliceous rocks from the Lower Cambrian strata (0—0.7‰) as reported by Li et al., but is consistent with the data for siliceous rocks and cherts of submarine hydrothermal origin. It is likely that a later hydrothermal replacement could have taken place in the SSF-bearing sedimentary rocks. The oxygen isotope values of the phosphate of SSF and GP are 16.8‰ and 17.0‰, respectively. These are significantly higher than the Neoproterozoic phosphate ores (10.9‰—13.9‰) as reported by Ling et al., hence, late diagenesis and hydrothermal replacement may not have caused a significant change in the oxygen isotope compositions of the small shelly fossils, and the calculated temperatures (2..4—2..3℃) for palaeo-seawater using a SSF phosphate oxygen isotope thermometer are therefore considered here as the upper limit of seawater temperature in the Early Cambrian ocean of the Yangtze Platform.

关键词： Anabarites oxygen isotope silicon isotope paleo-temperature.

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