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| 1 | 深水砂体成因研究新进展显示文摘在深水重力流研究中,传统浊流理论正受到砂质块体搬运和底流再改造砂体概念的冲击。陆架边缘沉积物滑塌是重力流驱动沉积过程最普遍的诱因,块体搬运过程(包含滑动、滑塌以及碎屑流)由于具有较高沉积物浓度(体积分数为25%~100%),表现为弹性和塑性特征。浊流因具有较低的沉积物浓度(体积分数为1%~23%)表现为黏性流动,不属于块体搬运的范畴。除重力流外,底流也是重要的深海搬运沉积方式。4种最常见的底流分别为:温盐流、风力驱动底流、深海潮汐及斜压流,牵引构造可用来区分这4种底流形成的再改造砂体,其中内波和内潮汐引起的斜压流再改造砂体的特征仍需深入研究。仅通过地震剖面与地质体形态无法识别块体搬运和底流再改造砂体类型,岩心和露头观察是唯一能鉴别其沉积相特征的方法。短期事件,如地震、海啸、热带风暴等,可能只持续几小时或者几天,却是沉积物滑塌的重要触发机制,比长达数千年低水位沉积期更为重要。 | Shanmugam G | 2013 | 石油勘探与开发2013，40，3： | 111 |
| 2 | 水下碎屑流沉积:深水沉积研究热点与进展显示文摘自20世纪50年代以来,作为沉积物搬运两大主要动力之一的重力流因其在记录地质事件、改造地表地貌和勘查油气资源方面的特殊意义而引起广泛关注。重力流研究历史经历了现象观测、概念体系建立、沉积模式建立、工业应用与质疑和碎屑流研究深化5个阶段。近期,以深海水下碎屑流为核心的研究重建了“砂质碎屑流”概念,新建立了以碎屑流细分为主要内容的3套重力流分类,提出并讨论了水下碎屑流“滑水”搬运机制特征、形成条件,系统分析沉积物浓度、粘土含量及成分对水下重力流性质及搬运沉积过程的影响。继20世纪60—70年代重力流研究热潮后,1996年以来水下碎屑流为主的研究再次掀起新一轮研究热潮。综合沉积物重力流研究现状、进展和当前油气工业勘探开发需求,指出未来水下碎屑流研究动态包括:①水下碎屑流成因分类体系的建立及重力流分类体系的完善;②实地观测与模拟实验结合下水下碎屑流发育机制深化;③重力流泥岩沉积机制及油气意义和④水下碎屑流主控型重力流沉积模式的建立及其在油气勘探开发中的应用。 | 鲜本忠 安思奇 施文华 | 2014 | 地质论评2014，60，1： | 49 |
| 3 | 深水块状砂岩碎屑流成因的直接证据:“泥包砾”结构——以鄂尔多斯盆地上三叠统延长组研究为例显示文摘水下碎屑流沉积是近年来在深水环境(深海或深湖)中日益受到重视的一种沉积类型,然而目前还没有一个确定水下沉积物的块体搬运过程的公认鉴别标志。通过对鄂尔多斯盆地湖盆中央地区几个露头剖面的地质调查,首次在延长组深水厚层块状砂岩中发现了一种'泥包砾'结构,并分析了其形成与演变过程。研究认为这种'泥包砾'结构主要与三角洲前缘特殊的'碎屑流'成因机理与发育过程有关,其形成过程自始自终表现出含有它的沉积物是作为块体状态(宾汉塑性体)被搬运的,自始自终表现出其在搬运过程中是被介质的强度所支撑的,据此认为'泥包砾'结构是确定延长组深水厚层块状砂岩为碎屑流成因的最有意义的标志性证据,并由此建立了延长组深水砂岩从开始启动到搬运、再到沉积的过程与模式。同时,本文认为'泥包砾'也为深海沉积中块体搬运作用与搬运过程的研究提供了一种可借鉴的关键性判识标志,对于当前全球深水(包括深海与深湖)油气勘探以及目前国际地学界广泛开展的大陆边缘沉积物'从源到汇'过程的研究都有积极意义。 | 李相博 刘化清 张忠义 袁效奇 完颜容 牛海青 廖建波 王菁 | 2014 | 沉积学报2014，32，4： | 35 |
| 4 | Further Information of the Associated Li Deposits in the No.6 Coal Seam at Jungar Coalfield, Inner Mongolia, Northern China显示文摘Total 138 coal samples and 14 parting samples were taken from the No. 6 Seam of the Jungar Coalfield, Inner Mongolia. These samples were analysed by optical microscopy, sequential chemical extraction procedure (SCEP), inductively coupled plasma mass spectrometry (ICP-MS), X-ray powder diffraction (XRD), and scanning electron microscope in conjunction with an energy-dispersive X-ray spectrometer (SEM-EDX) analysis. The results indicate that the Li contents have reached the industrial grade of the coal associated Li deposit, and the total Li reserves have reached 2406600 tons, that is, 5157000 tons Li2O in the No. 6 seam in the Jungar Coalfield. The sequential chemical extraction procedure results suggest that the Li concentration is mainly related to inorganic matter. The minerals in the coals consist of kaolinite, boehmite, chlorite-group mineral, quartz, calcite, pyrite, siderite and amorphous clay material. Some Li could be absorbed by clay minerals in the Li-bearing coal seam. The chlorite phase?could be?most likely the host for a part of Li. The Yinshan Oldland should be the most possible source of Li of the coal. | SUN Yuzhuang ZHAO Cunliang LI Yanheng WANG Jinxi ZHANG Jianya JIN Zhe LIN Mingyue Wolfgang KALKREUTH | 2013 | Acta Geologica Sinica(English Edition)2013，87，4： | 33 |
| 5 | 中国湖相沉积物重力流研究的过去、现在与未来显示文摘深水重力流沉积领域是当前全球油气勘探与研究的热点,陆相盆地深水重力流沉积研究在我国已有50年历程,大致可以分为3个阶段,即浊流理论探索与发展阶段(1970—1980年)、浊流理论工业化应用阶段(1990—2000年)和砂质碎屑流研究阶段(2010年以后).近10年来,随着国际深水沉积理论的发展与我国油气勘探技术的进步,湖盆深水沉积研究工作进展迅速,涌现出了大量的新成果、新认识,主要包括以下4个方面:1)湖盆中央深水区至少存在浊流、异重流、砂质碎屑流及底流4种类型的重力流与牵引流沉积;2)湖盆中不同类型的流体在搬运与沉积过程中存在互相转化,形成混合事件层(Hybrid Event Bed);3)建立了湖相砂质碎屑流搬运—沉积过程的鉴别标志——'泥包砾'结构(Mud-coated intraclasts);4)地震沉积学理论与技术方法在湖相重力流内部沉积单元解剖、湖盆深水沉积模式建立等方面取得巨大成功.展望未来,为适应油气工业勘探开发需求,湖盆深水沉积研究发展趋势主要有5个方面:1)深水砂体成因类型划分、搬运—沉积过程及沉积模式的建立与完善;2)深水泥页岩(细粒沉积)成因机理、类型划分及其油气意义研究;3)深水沉积'源—汇'系统与地震响应及评价预测研究;4)深水沉积搬运—沉积过程实验模拟研究;5)新的深水沉积理论体系建立及其在油气勘探开发中的应用. | 李相博 刘化清 潘树新 王菁 | 2019 | 沉积学报2019，37，5： | 29 |
| 6 | 异重流成因和异重岩沉积特征显示文摘河流在洪水期携带大量陆源碎屑,当其入湖或入海后,由于洪水密度大于周围水体的密度,洪水发生下沉并沿盆地底部长距离运移,形成陆源下潜流或异重流。异重流形成的相关沉积岩被统称为异重岩。异重岩通常由一个底部的反粒序单元和一个顶部的正粒序单元组成,反粒序单元反映了异重流能量的逐渐增强,正粒序反映了流体能量的逐渐减弱。异重流以3种方式搬运碎屑颗粒,即底载搬运、悬浮搬运和漂浮搬运。根据搬运方式的不同,异重岩分为3类岩相,即底载成因的B类岩相、悬载成因的S类岩相和漂浮物成因的L类岩相。异重流的沉积充填形成了河道、堤岸和朵叶体3类微相,内部岩相变化极为发育。异重岩的沉积特征虽然典型且较易识别,但是常被误认为是砂质碎屑流、滨岸相、三角洲相或河流相沉积。 | Carlos Zavala 潘树新 | 2018 | 岩性油气藏2018，30，1： | 26 |
| 7 | 东营凹陷陡坡带盐18-永921地区砂砾岩沉积与储层特征显示文摘断陷盆地陡坡带断裂活动强烈,常表现为深水重力流砂砾质沉积和烃源岩同层的特征,储层物性评价成为该区域油气勘探的关键.针对东营凹陷盐18-永921地区沙三下亚段和沙四上亚段,通过地层细分、沉积相厘定和储层特征分析,探索了优质储层发育规律.地质-地震综合的沉积相研究表明,该区沉积充填过程和相类型受控于边界断裂的演化,自下而上经历了扇三角洲沉积、近岸水下扇—洪水型湖底扇沉积和近岸水下扇—滑塌型湖底扇沉积3个演化阶段.砂砾岩储层储集空间以孔隙为主,裂缝不发育,孔隙中原生孔隙明显占优势.当埋深小于2 600 m时,沉积作用是该区砂砾岩储层物性的主控因素;当埋深大于2 600 m时,储层进入晚成岩阶段,溶蚀作用增强,除沉积作用外,溶蚀作用开始对储层物性产生重要影响.根据储层物性主控因素分析结果,提出沙三下亚段和沙四上亚段Ⅰ~Ⅳ砂组中近岸水下扇中扇的辫状水道、沙四上亚段Ⅴ,Ⅵ砂组中洪水湖底扇和Ⅶ,Ⅷ砂组中扇三角洲前缘控制了各时期优质储层的分布. | 鲜本忠 路智勇 佘源琦 王欣 王璐 黄捍东 | 2014 | 岩性油气藏2014，26，4： | 19 |
| 8 | Status and Trends in Research on Deep-Water Gravity Flow Deposits显示文摘Deep-water gravity flows are one of the most important sediment transport mechanisms on Earth. After 60 years of study,significant achievements have been made in terms of classification schemes,genetic mechanisms,and depositional models of deep-water gravity flows. The research history of deep-water gravity flows can be divided into five stages: incipience of turbidity current theory; formation of turbidity current theory; development of deep-water gravity flow theory; improvement and perfection of deep-water gravity flow theory; and comprehensive development of deep-water gravity flow theory. Currently,three primary classification schemes based on the sediment support mechanism,the rheology and transportation process,and the integration of sediment support mechanisms,rheology,sedimentary characteristics,and flow state are commonly used.Different types of deep-water gravity flow events form different types of gravity flow deposits. Sediment slump retransportation mainly forms muddy debris flows,sandy debris flows,and surge-like turbidity currents. Resuspension of deposits by storms leads to quasi-steady hyperpycnal turbidity currents(hyperpycnal flows). Sustainable sediment supplies mainly generate muddy debris flows,sandy debris flows,and hyperpycnal flows. Deep-water fans,which are commonly controlled by debris flows and hyperpycnal flows,are triggered by sustainable sediment supply; in contrast,deep-water slope sedimentary deposits consist mainly of debris flows that are triggered by the retransportation of sediment slumps and deep-water fine-grained sedimentary deposits are derived primarily from finegrained hyperpycnal flows that are triggered by the resuspension of storm deposits. Harmonization of classification schemes,transformation between different types of gravity flow deposit,and monitoring and reproduction of the sedimentary processes of deep-water gravity flows as well as a source-to-sink approach to document the evolution and deposition of deep-water gravity flows are the most important research aspects for future studies of deep-water gravity flows study in the future. | YANG Tian CAO Yingchang WANG Yanzhong LI Ya ZHANG Shao Min | 2015 | Acta Geologica Sinica(English Edition)2015，89，2： | 18 |
| 9 | 深水砂质碎屑流沉积:概念、沉积过程与沉积特征显示文摘在总结国内外相关文献的基础上,对砂质碎屑流的相关概念、沉积动力学过程及沉积特征进行系统梳理,并对争议问题进行了讨论。砂质碎屑流是一种富砂质具塑性流变性质的宾汉塑性流体,代表一个从黏性至非黏性碎屑流连续系列,具有中—高碎屑浓度(体积浓度25%~95%)、较低的泥质含量(体积浓度可低至0. 5%)、湍流不发育。其沉积物以块状砂岩、含碎屑逆粒序砂岩沉积为代表,局部可见滑动剪切构造和液化漩涡构造。砂质碎屑流的形成多经历滑动→滑塌→砂质碎屑流→浊流的有序演化过程;滑水作用和基底剪切润湿作用是克服砂质碎屑流与基底剪切摩擦拖拽的重要机制,流体强度则是克服上覆环境水体混入稀释的重要原因;砂质碎屑流头部和边部优先固结沉积,进而控制流体整体沉降。砂质碎屑流是形成深水块状砂岩的主要原因之一,砂质碎屑流在相对低流体效率的深水重力流沉积环境广泛发育。 | 金杰华 操应长 王健 杨田 周磊 | 2019 | 地质论评2019，65，3： | 13 |
| 10 | 深水沉积理论研究现状、存在问题及发展趋势显示文摘深水沉积理论研究历经近70年历史,在分歧和争议中不断发展,一直是沉积学研究领域的热点问题。回顾深水沉积研究史,大体可将其分为3个阶段:(1)1950—1980年代的'浊流'与'浊积岩'时代;(2)1980—2000年代的深水牵引流发展及经典模式反思时代;(3)2000年至今的砂质碎屑流冲击和深水斜坡沉积模式时代。但时至今日,由于深水沉积过程本身的复杂性,深水沉积领域仍存在颇多争议和问题,主要集中在沉积物重力流术语的复杂混乱、深水牵引流沉积的识别评价及固定沉积模式与动态流体性质转换的分歧这3个问题上,深水沉积过程和流态转换的精确识别刻画及综合沉积模式的建立是当今深水沉积研究的难点。有效预测深水砂岩储层,发现更多深水油气资源是深水沉积研究的迫切诉求。今后的深水沉积研究应努力实现深水沉积概念术语的规范统一,同时注重地震沉积学应用,并大力发展实验模拟技术,多学科交叉发展,建立'源—渠—汇'综合及沉积流态有序转化的沉积模式,最终有效指导深水油气勘探。 | 梁建设 田兵 王琪 马晓峰 牟炜卫 | 2017 | 天然气地球科学2017，28，10： | 11 |
| 11 | 莺歌海盆地砂质块体搬运沉积及其天然气聚集显示文摘通过莺歌海盆地XF13区三维地震、钻井资料分析,新识别出上中新统黄流组一段砂质块体搬运沉积体系,进而研究其沉积模式及优质天然气聚集机制。钻井岩心以砂质碎屑流沉积为主,发育块状层理、平行层理、突变接触面、泥岩撕裂和变形层等重力流沉积构造;地震资料上其与围岩差异显著,呈'削截'接触关系。砂质块体搬运沉积由多期构成,每期经历'早期侵蚀—充填迁移'和'晚期废弃'2个沉积阶段,相应发育近物源砂质碎屑流、块状厚层砂岩朵叶体和远物源泥质浊流、席状砂的沉积构型。构建了外陆架、海侵—高位体系域砂质块体搬运沉积新模式。以XF13大气田为例,从砂质块体搬运沉积、构造—岩性圈闭的形成到输导体系和天然气成藏过程分析,探讨了优质天然气聚集机制,认为莺歌海盆地中深部具备形成'优质储集体、高烃类气'天然气聚集的地质条件。 | 张迎朝 王立锋 李绪深 钟泽红 詹冶萍 徐涛 | 2016 | 石油实验地质2016，38，2： | 10 |
| 12 | 鄂尔多斯盆地彬长区块延长组生储盖组合与油气富集特征显示文摘通过地球化学分析及岩心观察、测井、录井与试油等资料,分析了鄂尔多斯盆地彬长区块延长组生储盖组合及油气富集特征。结果表明:研究区以长7油层组底部张家滩页岩为主力烃源岩,以长8—长6油层组三角洲前缘水下分流河道及重力流砂体为储层,以长9—长4+5油层组间隔发育的半深湖—深湖相暗色泥岩及页岩为盖层,构成了4套生储盖组合:长7生-长9_1储-长9上部盖(Ⅰ)、长7生-长8_1储-长7盖(Ⅱ)、长7生-长7_2储-长7上部盖(Ⅲ)和长7生-长6_3储-长6_(1+2)—长4+5盖(Ⅵ)。根据源-储配置关系及生储盖层叠置样式将生储盖组合划分为连续型(Ⅱ和Ⅲ)和间断型(Ⅰ和Ⅵ)共2类4套,其中连续型生储盖组合油气富集主要受控于张家滩页岩与有利储层展布和断层-裂缝系统发育程度;间断型生储盖组合油气富集主要受控于油源断裂、源-储距离和有利储层展布。连续型生储盖组合油气充注与保存条件均较好,比间断型生储盖组合油气富集程度更高。 | 陈贺贺 朱筱敏 陈纯芳 尹伟 | 2016 | 岩性油气藏2016，28，2： | 9 |
| 13 | Mass-transport Deposits of the Upper Cretaceous Qingshankou Formation, Songliao Terrestrial Basin, Northeast China: Depositional Characteristics, Recognition Criteria and External Geometry显示文摘Extensive mass transport deposits(MTDs), which form a significant component of the stratigraphic record in ancient and modern deep water systems, mostly distributed in the continental margin of ocean basins worldwide. To date, no large-scale MTDs have been found in Chinese terrestrial basins. Based on integrated analysis of the seismic, drilling, core and logging data, this article report MTDs have been found in Songliao terrestrial basin(SLTB), Northeast China. During the depositional period of the Upper Cretaceous Qingshankou Formation, slope break of lacustrine basins was an ideal discharge place for gravity depositions. Regional sedimentary study of MTDs reveals that Cretaceous-age MTDs in SLTB were deposited in slope-break environments by slide, slump and debris flow, and MTDs were mixed with little turbidite simultaneously. Besides the massive aspect, key features of MTDs are the common presence of deformational structures or softsedimentary deformation, floating shale clasts, boudins, microfaults, distortion beddings, rotated sand debris. Detailed mapping of two three-dimensional(3-D) seismic surveys acquired in Yingtai(YT) and Haituozi(HTZ) areas reveals that MTDs are characterized by chaotic, mounded, and transparent seismic reflection. Growth fault, slope gully and geomorphology of the slope break greatly influenced the sedimentary process and external geometry of MTDs, and as a consequence, MTDs in SLTB exhibit classic fan-like geometry and some special(non-fan-like) external geometry. Furthermore, fanlike MTDs can be divided into three subcategories, including isolated fan, mother-son fan and stacked fan. Non-fan-like MTDs can be divided into two subcategories, strip-like MTDs and faulted-pit MTDs. A new sedimentary model has been built for MTDs in SLTB. MTDs have become a new exploration and development target in the SLTB. | PAN Shuxin WEI Pingsheng WANG Tianqi LIU Caiyan CHEN Bintao LIANG Sujuan | 2014 | Acta Geologica Sinica(English Edition)2014，88，1： | 9 |
| 14 | 珠江口盆地白云深水区深水水道沉积体系及成因模式显示文摘深水水道沉积是深水油气勘探开发中重要的沉积类型。利用高分辨率三维地震、钻测井等资料,通过地震资料综合解释和地质分析,对南海北部白云深水区珠江组上段发育的大型深水水道的展布特征及成因模式进行识别、刻画和预测。研究认为,该体系近SN向展布,具低弯度蛇曲形态,体系内发育3类深水重力流沉积单元,其中块体搬运沉积发育于白云凹陷东北端,呈丘状外形、内部杂乱反射特征,底部发育侵蚀擦痕;水道为体系主体搬运通道,按成因可分为侵蚀型、侵蚀/加积型和加积型,受控于物源供给及古地貌特征,具'上下分期,南北分段'发育特征,为典型的复合水道沉积构型,复合水道内叠置迁移关系复杂;位于水道前端的朵体发育于荔湾凹陷南部,剖面上表现为强振幅平行—亚平行反射,在平面上具有朵状特征。从古水深、古地形、触发机制及古源头沉积体系等方面综合分析,探讨了该深水水道体系的成因模式,推测古珠江三角洲为其主力物源,东沙隆起碳酸盐岩沉积为次级物源。这一研究对研究深水重力流沉积过程具有重要的参考价值。 | 王琪 田兵 马晓峰 牟炜卫 高丽华 | 2017 | 天然气地球科学2017，28，10： | 6 |
| 15 | 鄂尔多斯盆地延长组深水块状砂岩“泥包砾”结构成因机制显示文摘通过元素地球化学分析、X-衍射全岩分析、岩石薄片分析等试验方法对鄂尔多斯盆地延长组块状砂岩中'泥包砾'结构成因机制进行研究。结果表明:该结构中泥质包壳层Fe/Mn值较低、MnO_2含量较高,Th/U值较高、δU小于1,Sr/Ba值较低,反映近岸、偏氧化及低古盐度的浅水地球化学特征,和与其伴生的半深湖层状泥岩的沉积介质环境存在较大差异性;结构中内核的主要成分为砂质、泥质或白云石团块,形成于滨浅湖或三角洲前缘环境;'泥包砾'结构非瞬态形成,而是贯穿长7—长6_3期三角洲前缘砂泥岩软沉积物往深湖区块体搬运的全过程,经历浅湖相团块形成、结构初始形成、岩性混合转移、最终停积定型4个阶段。 | 廖建波 李相博 赵惠周 张晓磊 李智勇 完颜容 王菁 | 2017 | 中国石油大学学报(自然科学版)2017，41，4： | 5 |
| 16 | 鄂尔多斯盆地中部延长组长9油层组2种砂体类型特征及成因分析显示文摘鄂尔多斯盆地是国内大型内陆坳陷盆地,在延长组富集大量的原油。近年来,随着勘探的深入,在盆地中部的长9油层组发现大量的工业油流,具有较大的勘探潜力,但是油藏分布东西向差异较大。通过对西部和东部2种储层的矿物成分、沉积相类型及砂体分布特征进行对比分析,证明研究区存在2种不同结构的砂体类型:西部砂体单层厚度大,纵向多层叠加,顺物源方向连续性较好,东部砂体单层厚度薄,纵向泥质夹层发育,顺物源方向连续性较差,砂体分布相对孤立。并对2种砂体类型的成因环境进行了分析:西部砂体主要发育在盆地西部的辫状河三角洲沉积体系,在近物源、高能量、物源供给充足的条件下,河流入湖后河道的能量大于湖水的顶托作用,河道继续向前延伸,形成条带状的厚层垂向叠置砂体;东部砂体主要发育在盆地东北曲流河三角洲沉积体系,是在坡缓水浅、远物源、低能量的缓慢沉积条件下,湖水能量和河道入湖能量彼此强弱交替,形成了单层厚度薄且不连续的砂体。 | 惠潇 楚美娟 | 2016 | 天然气地球科学2016，27，1： | 2 |
| 17 | Lithofacies Characters and Significance of the Submarine Fan of the Liufengguan Group in Qinling显示文摘Field investigation and laboratory research on flysch of the Liufengguan Group in Qinling indicate the following:(1) Sandstone of the Liufengguan Group is categorized as feldspathic lithic graywacke with a minor amount of lithic graywacke in the QFR triangular diagram.Grain size≤0.3 mm.Bedding plane structures such as groove casts and suspected flute casts can be found at the bottom of the sandstone.It is inferred that currents may have come from the southeast during deposition.Bedding structures such as ripple marks,graded bedding,parallel bedding,small-scale cross bedding,climbing bedding,suspected convolute bedding,microlamination and sliding structures have also been observed,which are of indicative significance.It is thought that the Liufengguan Group has the sedimentary characteristics of bedding,bedding plane structures and lithological assemblages of deep-sea low-density turbidity current deposits.The vertical succession of the Bouma sequence in the inner fan subfacies zone is generally incomplete:the assemblage of Ta and Tabc is commonly seen;the succession of the middle fan subfacies zone is relatively complete;and divisions Te and Tb are common in the outer fan subfacies zone.(2) The flysh of the Liufengguan Group is a sequence of deep-sea argillaceous-arenaceous submarine fan deposits,in which the authors recognize the inner,middle and outer fan subfacies and also nine types of lithofacies:normal graded sandstone(A1),medium-to thick-bedded,fine-grained sandstone(A2),medium-to thick-bedded and massive siltstone(A3),thin-bedded,fine-grained sandstone and mudstone(B1),irregular interbeds of thin-bedded,fine-grained sandstone and siltstone(B2),thin-bedded,fine-grained sandstone(C1),very thin-bedded,fine-grained sandstone(D1),olistostromes(E1) and deep-sea mudstone(F).The inner fan consists of four microfacies:natural levee(A1),water channel(A2,A3) and olistostrome(E1);in the middle fan there also occur four microfacies,i.e.,branch channel(B1),branch channel(B2),interdistributary bay(D1) and olistostrome.The outer fan is made up of the branch channel(C1) and sheet sand(D1) microfacies,which alternate vertically with sediments of deep-sea plain subfacies(F).There occur fining-and thinning-upward channel deposits in the outer-fan subfacies zone of the submarine fan of the Liufengguan Group observed in this study.The quartz content of the graywacke of the deposits is all higher than 40% and may reach as high as 60%.Therefore,on the basis of the aforementioned features,this flysh should be formed in a passive continental-margin tectonic environment. | ZHENG Ning LI Tingdong YOU Guoqing ZHANG Shuanhou CUI Jiantang CHENG Muwei | 2012 | Acta Geologica Sinica(English Edition)2012，86，1： | 2 |
| 18 | 基于矿井地质的一个三角洲的演化分析显示文摘综合分析湘东浏阳澄潭江矿区数十家开发安源煤系的小煤矿矿井地质资料,认为澄潭江矿区安源煤系是三角洲沉积体系所形成的.该三角洲是安源运动之后,江南古陆往东南注入湘赣海湾的一条古河流所形成的浅水高建设性三角洲,并经过三湾、三都2次区域性造陆运动的改造而最终演变成为一个千平方公里级的大型三角洲.研究表明,矿井地质资料非常精细地揭露了煤(矿)层及其附近围岩的沉积特征,可以用于更为精准的沉积环境分析;而综合多个煤层、多个矿井的矿井地质资料的整体分析,并辅以适当的浅表地质调查,是完全可以揭示三角洲这种复杂沉积体系的形成及其发展演变历史的. | 刘海波 | 2017 | 湖南科技大学学报(自然科学版)2017，32，4： | 2 |
| 19 | Elemental characteristics of lacustrine oil shale and its controlling factors of palaeo-sedimentary environment on oil yield: a case from Chang 7 oil layer of Triassic Yanchang Formation in southern Ordos Basin显示文摘As an important unconventional resource, oil shale has received widespread attention. The oil shale of the Chang 7 oil layer from Triassic Yanchang Formation in Ordos Basin represents the typical lacustrine oil shale in China. Based on analyzing trace elements and oil yield from boreholes samples, characteristics and paleo-sedimentary environments of oil shale and relationship between paleo-sedimentary environment and oil yield were studied. With favorable quality, oil yield of oil shale varies from 1.4% to 9.1%. Geochemical data indicate that the paleo-redox condition of oil shale's reducing condition from analyses of V/Cr, V/(V + Ni), U/Th, d U, and authigenic uranium. Equivalent Boron, Sp, and Sr/Ba illustrate that paleosalinity of oil shale is dominated by fresh water.The paleoclimate of oil shale is warm and humid by calculating the chemical index of alteration and Sr/Cu. Fe/Ti and(Fe + Mn)/Ti all explain that there were hot water activities during the sedimentary period of oil shale. In terms of Zr/Rb, paleohydrodynamics of oil shale is weak.By means of Co abundance and U/Th, paleo-water-depth of oil shale is from 17.30 to 157.26 m, reflecting sedimentary environment which is mainly in semi deep–deep lake facies. Correlation analyses between oil yield and six paleoenvironmental factors show that the oil yield of oil shale is mainly controlled by paleo-redox conditions,paleoclimate, hot water activities, and depth of water.Paleosalinity and paleohydrodynamics have an inconspicuous influence on oil yield. | Delu Li Rongxi Li Zengwu Zhu Feng Xu | 2018 | Acta Geochimica2018，37，2： | 1 |
| 20 | 湘东北地区安源煤系三角洲沉积与演化特征显示文摘湘东北地区在晚三叠世处于北北东向的湘东海湾和北东东向萍乐坳陷带的交汇转折端,其特有的汇水地理位置和稳定的沉积环境,造就了以浏阳澄潭江为代表的三角洲古地理景观,沉积了以安源煤系为典型的海陆交互含煤建造。区内三角洲沉积和演化特征研究对湘赣海湾内部杨子、华夏板块碰撞拼接历程的研究,甚至于我国南方中生代发育基础和矿产赋存的研究都具有十分重要的现实意义。澄潭江三角洲建设旋回与演化特征分析,认为该三角洲系由冲积扇、扇三角洲、浅水高建设性三角洲逐渐演化而成为受湘赣海湾水位控制的破坏性三角洲,虽然经历了印支期多次区域性的地质运动而顽强地成长为一个千平方公里级别的大型三角洲。研究表明,湘赣海湾西北部的地形平坦、坡度平缓、沉积环境稳定,其西北侧的湖南山地的物源供应丰富、河流系统稳定,适合于大型三角洲的形成和发育。 | 刘海波 刘石磊 武志伟 | 2018 | 中国煤炭地质2018，30，8： | 1 |
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