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Saddle-Dolomite-Bearing Fracture Fillings and Records of Hot Brine Activity in the Jialingjiang Formation,Libixia Section,Hechuan Area of Chongqing City

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Acta Geologica Sinica(English Edition) 2016年第1期90卷 195-208页

作者： HUANG Keke zhong yijiang HUANG Sijing LI Xiaoning FENG Mingshi State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of Technology Institute of Sedimentary Geology Chengdu University of Technology

Most vein minerals deposited in fractures of the Jialingjiang Formation from Libixia section, Hechan area include a large amount of saddle dolomite and accompanying celestite, calcite and fluorite. This study analyzed the nature, source, evolution of the fluids by plane-light petrography, fluid-inclusion methods, cathodoluminescence images, and stable isotopic compositions. The homogenization temperatures of two-phase aqueous fluid inclusions in dolomite range between 100 and 270℃. Combined with the jlSO data, it is suggested that the fluid responsible for the precipitation of fracture fillings have δ18O values between 10%o and 18‰ （relative to SMOW）. The saddle dolomite and the accompanying minerals were the result of activity of dense brines at elevated temperatures. Moreover, analysis shows that the fluid was derived from a mixture of marine-derived brine and deeper circulating flow. This fluid was enriched in Sr during diagenesis and formed celestite in fracture and for regional mineralization. Dissolution of saddle dolomite was attributed to the cooling of Mg/Ca-decreased fluids, which may relate to a leaching of gypsum to celestite in surrounding carbonates.

关键词： Libixia section Jialingjiang Formation saddle dolomite hot brine Hechuan area Chongqing

Carbon isotope composition and comparison of Lower Triassic marine carbonate rocks from Southern Longmenxia section in Guang＇an, Sichuan Basin

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Science China Earth Sciences 2017年第1期60卷 80-94页

作者： HUANG SiJing HUANG KeKe zhong yijiang LI XiaoNing MAO XiaoDong HU ZuoWei LIU SiBing ZHANG Meng WU WenHui State Key Laboratory of OilGas Reservoir Geology and Exploitation Institute of Sedimentary Geology Chengdu University of Technology Chengdu 610059 China

The Early Triassic was a period of ecological restoration for the earth＇s system after the end-Permian mass extinction. Geochemical records linked to the variations in marine ecosystems during this period have attracted the interest of geologists for many years. Based on petrographic analysis of samples and evaluations of their reliability as proxies for original seawater, this study investigated the carbon and oxygen isotopic compositions of 350 carbonate rock samples from the Lower Triassic （and adjacent strata） in the southern Longmenxia section of Guang＇an, eastern Sichuan Basin. The results indicate that the Triassic carbonate rocks from the southern Longmenxia section favorably preserved the original seawater＇s δ13C signal. Furthermore, carbon and oxygen isotopic compositions are found to be poorly correlated, with a determination coefficient as low as 0.0205 and only 44 rock samples show results of Mn/Sr〉2 and/or 6180〈-6.5%0. The complete carbon isotopic curve for the Lower Triassic is established using the data from the remaining 306 samples with MrdSr〈2 and/or 6180〉-6.5%o. This curve presents favorable comparability on a global scale, specifically in the δ13C minima near the Permian-Triassic boundary, at the top of the Jial and within the the Jia3, as well as in the δ13C maxima at the tops of the Yel and Ye4, at the base of the Jia2 and at the top of the Ye3. The peaks and troughs corresponding to these maxima and minima all reflect global signals. By comparing these results to previous research on coeval carbon isotopic curves established within the chronostratigraphic framework, the ages of these critical evolution points are determined. The results show that the Yel roughly corresponds to the Griesbachian substage; the Ye2 through Ye4 correspond to the Dienerian substage; Jial corresponds to the Smithian substage; from the Jia2 to the lower part of the Jia4 correspond to the Spathian substage; and the middle and upper parts of the Jia4 belongs to the Aeg

关键词： Southern Longmenxia section Early Triassic Carbon isotopic composition Global events Smithian-Spathian boundary event

Fusion network for small target detection based on YOLO and attention mechanism

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Optoelectronics Letters 2024年第6期20卷 372-378页

作者： XU Caie DONG Zhe zhong Shengyun CHEN yijiang PAN Sishun WU Mingyang School of Information and Electronic Engineering Zhejiang University of Science and TechnologyHangzhou 310012China Research Development Department Hangzhou Xinhe Data Technology Co.Ltd.Hangzhou 311202China College of Mechanical Engineering Zhejiang UniversityHangzhou 310013China

Target detection is an important task in computer vision research, and such an anomaly detection and the topic of small target detection task is more concerned. However, there are still some problems in this kind of researches, such as small target detection in complex environments is susceptible to background interference and poor detection results. To solve these issues, this study proposes a method which introduces the attention mechanism into the you only look once(YOLO) network. In addition, the amateur-produced mask dataset was created and experiments were conducted. The results showed that the detection effect of the proposed mothed is much better.

关键词： Fusion network for small target detection based on YOLO and attention mechanism

Electrochemical degradation of p-nitrophenol with different processes

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Journal of Environmental Sciences 2010年第4期22卷 500-506页

作者： Ping Jiang,Jiti Zhou,Aili Zhang,yijiang zhong Key Laboratory of Industrial Ecology Environmental Engineering(MOE),School of Environmental & Biological Science & Technology,Dalian University of Technology,Dalian116024,China. Key Laboratory of Industrial Ecology Environmental Engineering (MOE) School of Environmental & Biological Science & Technology Dalian University of Technology Key Laboratory of Industrial Ecology Environmental Engineering (MOE) School ofEnvironmental & Biological Science & Technology Dalian University of Technology

The electrochemical degradation ofp-nitrophenol （PNP） under different conditions was investigated. The electrochemical behavior of PNP and its reduction product p-aminophenol （PAP） on stainless steel cathode and Ti/Pt anode through cyclic voltammetry were observed. Electrochemical degradation process was performed in an undivided cell and 92% PNP was removed corresponding to a 22% total organic carbon removal. A divided cell was also used and it was found that PNP degradation was mainly attributed to cathodic reduction, while anodic oxidation was responsible for PNP removal due to the reaction with hydroxyl radicals and surface oxide generated on the anode. The sequential electrolytic processes, reduction-oxidation and oxidation-reduction, were compared in the divided cell. In the case of reduction-oxidation process, the total organic carbon removal reached 40%, but PNP removal was the same with the undivided cell. A black deposit was found in the effluent and identified by Fourier transform infrared spectroscopy as a polymer of PAP produced by the 1,4-addition reaction of quinoneimine. Intermediates left in the solution such as hydroquinone, p-benzoquinone and PAP were determined by high performance liquid chromatography. Whereas, the oxidation-reduction process proved unsatisfying.

关键词： degradation cathodic reduction anodic oxidation sequential electrolysis

四川盆地中二叠统栖霞组白云石化海相流体的地球化学依据

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天然气工业 2016年第10期36卷 35-45页

作者：李小宁黄思静黄可可袁桃钟怡江 "油气藏地质及开发工程"国家重点实验室.成都理工大学

四川盆地中二叠统栖霞组是油气勘探的重点层位,为探究其白云石化流体的性质和来源,基于岩石学研究成果,对该区栖霞组的宿主方解石和不同类型的白云石进行了稀土元素地球化学特征分析。结果表明:(1)宿主方解石、他形白云石和鞍形白云石... 详细信息

四川盆地中二叠统栖霞组是油气勘探的重点层位,为探究其白云石化流体的性质和来源,基于岩石学研究成果,对该区栖霞组的宿主方解石和不同类型的白云石进行了稀土元素地球化学特征分析。结果表明:(1)宿主方解石、他形白云石和鞍形白云石具有低的稀土元素含量,且Sc、Ti、Zr、Hf等元素的含量显著低于陆源碎屑沉积物中这些元素的含量,表明栖霞组碳酸盐岩未受陆源碎屑物质影响;(2)他形白云石和鞍形白云石具有轻稀土亏损、重稀土富集、La正异常、Ce亏损、Gd富集、显著的Y异常、Eu弱亏损和相似的REE+Y配分曲线,类似于宿主方解石的稀土元素地球化学特征,这些特征表明他形白云石和鞍形白云石的白云石化流体主要来源于地层中的海水或海源流体;(3)个别鞍形白云石样品微弱的Eu正异常及较高的包裹体均一化温度表明,栖霞组受到与峨眉山大火成岩省有关的热事件影响,但热液流体对白云石形成的影响程度相对有限,可能更多的是热事件的温度传导效应使得栖霞组的宿主方解石克服了白云石形成的动力学屏障。结论认为:高温仅是栖霞组宿主方解石白云石化的诱导因素,而白云石化流体仍然主要来源于地层中的海水或者海源流体。

关键词：四川盆地他形白云石鞍形白云石稀土元素白云石化流体峨眉山大火成岩省海水海源流体

川东北须家河组中铝土矿的发育特征及其对构造活动的响应

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岩石学报 2011年第8期27卷 2392-2402页

作者：林良彪陈彦庆淡永钟怡江徐胜林油气藏地质及开发工程国家重点实验室成都理工大学成都610059 成都理工大学沉积地质研究院成都610059

四川盆地晚三叠世诺里期与瑞替期(须三段与须四段)之间是否存在安县运动以及该运动的影响范围有多大,一直存在分歧。本次研究首次在川东北须家河组三段上部(即须三段与须四段之间)发现了沉积型铝土矿层的存在。通过镜下观察,地化、电子... 详细信息

四川盆地晚三叠世诺里期与瑞替期(须三段与须四段)之间是否存在安县运动以及该运动的影响范围有多大,一直存在分歧。本次研究首次在川东北须家河组三段上部(即须三段与须四段之间)发现了沉积型铝土矿层的存在。通过镜下观察,地化、电子探针、扫描电镜以及X射线等分析,认为:铝土矿以豆粒状产出状态为主,具豆粒结构、块状构造,豆粒间填隙物以灰、灰黑色胶状、蠕虫状高岭石为主,其次为褐铁矿染的干净明亮的放射状、球粒状菱铁矿,偶见闪锌矿;豆状铝土矿主要呈微-细晶粒状、鳞片状及絮状,其中,晶粒状、鳞片状铝土矿单偏光镜下无色、正中突起,解理明显,正交偏光镜下呈二级兰干涉色,结合X射线分析,将其定名为一水硬铝石,其Al2O3含量为85.022%～87.763%;测井曲线上,自然伽玛异常增大,当密度接近于***-3时,中子孔隙度值出现相对高值。表明须三段与须四段之间存在一次时间较长的沉积间断,佐证了安县运动的存在,同时也表明安县运动影响范围已远远超出了龙门山前缘地区,进入了盆地内部,甚至影响了整个四川盆地。

关键词：铝土矿安县运动须家河组川东北

中上扬子克拉通加里东期(寒武-志留纪)沉积层序充填过程与演化模式

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岩石学报 2011年第8期27卷 2299-2317页

作者：黄福喜陈洪德侯明才钟怡江李洁油气藏地质及开发工程国家重点实验室成都理工大学成都610059 中国石油勘探开发研究院北京100083 成都理工大学沉积地质研究院成都610059 油气资源与探测国家重点实验室重庆页岩气研究中心重庆400042 外生成矿与矿山环境重庆市重点实验室重庆地质矿产研究院重庆400042

以"构造控盆、盆地控相、相控组合"的思路和"过程-响应"原理为指导,即壳-幔耦合、板块活动和构造运动形成盆地,盆地沉积充填形成层序及相带组合的时空展布,而不同级别层序格架中层序结构、体系域叠加样式及相带的时空组合与盆地沉积充... 详细信息

以"构造控盆、盆地控相、相控组合"的思路和"过程-响应"原理为指导,即壳-幔耦合、板块活动和构造运动形成盆地,盆地沉积充填形成层序及相带组合的时空展布,而不同级别层序格架中层序结构、体系域叠加样式及相带的时空组合与盆地沉积充填过程密切相关。在前人对中上扬子克拉通盆地取得丰富的研究与勘探成果基础上,加强沉积环境、层序结构与沉积充填过程等方面的研究,对深化研究区认识以及油气资源勘探具有重要意义。因此,通过层序剖面结构、体系域叠加样式和相带组合的沉积响应记录,分析这些记录特征的时空变化规律来有效地揭示盆地沉积充填过程。具体以反映盆地整体特性的构造-层序(二级层序)为基础,以反映盆地充填格架的层序地层(三级层序)为单元,以反映层序沉积充填过程的层序结构、体系域叠置方式(四级以上层序)和相带分布规律为剖析对象"的技术路线,基于中上扬子加里东期克拉通盆地类型与演化阶段的划分,剖析了典型盆地的沉积充填过程,探讨了沉积层序充填特征及其差异性,并分阶段建立沉积演化模式。研究认为,中上扬子克拉通加里东期由克拉通内和克拉通边缘两大沉积域组成,盆地经历了由伸展机制到挤压机制的两个演化阶段,包括由裂谷型、裂陷型和坳陷型盆地构成的3期沉积充填过程。加里东期克拉通盆地在不同演化阶段,以及相同阶段不同类型盆地,具有不同的沉积建造类型、层序结构和体系域叠加样式等沉积响应,反映了个性鲜明的沉积充填特征和差异明显的控制因素。构造-层序充填过程的控制因素复杂多变,包括基底构造特征、构造运动、深大断裂、古隆起、相对海平面变化、气候变化和物源供给等,而多因素相互作用、综合影响,是特定时期特定盆地形成特有层序结构和叠加样式的关键所在。各阶段沉积模式在充填背景、建造类型、相带展布规律、演化过程与控制因素等方面具有继承性和差异性。加里东期中上扬子克拉通以隆坳相间格局为特征,克拉通台地边缘滩体与台地内广泛发育的白云岩滩和膏盐岩对油气的赋存和封盖意义重大。

关键词：中上扬子克拉通加里东期沉积层序充填过程沉积模式

中国东部箕状断陷湖盆扇三角洲与辫状河三角洲对比研究

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沉积学报 2015年第6期33卷 1170-1181页

作者：刘磊钟怡江陈洪德王峻成都理工大学沉积地质研究院成都610059 油气藏地质及开发工程国家重点实验室(成都理工大学) 成都610059

中国东部箕状断陷湖盆短轴方向,常常发育扇三角洲和辫状河三角洲,二者均可形成良好的油气储集体,但在岩芯以及地球物理资料的识别上常常容易混淆。通过对它们沉积特征、地球物理资料特征、含油气性和控制因素的对比研究和分析认为:扇三... 详细信息

中国东部箕状断陷湖盆短轴方向,常常发育扇三角洲和辫状河三角洲,二者均可形成良好的油气储集体,但在岩芯以及地球物理资料的识别上常常容易混淆。通过对它们沉积特征、地球物理资料特征、含油气性和控制因素的对比研究和分析认为:扇三角洲是陡坡带冲积扇直接入湖形成,地震反射特征为楔形前积,沉积物成分成熟度和结构成熟度均低于辫状河三角洲,沉积特征反映重力流和牵引流双重作用;辫状河三角洲是缓坡带辫状河入湖形成的三角洲,向湖盆方向推进较远,地震反射特征为叠瓦前积,沉积特征反映牵引流作用。扇三角洲易形成构造—岩性油气藏和岩性油气藏,有利相带为扇三角洲前缘水下分流河道、席状砂以及前扇三角洲容易发育的滑塌浊积扇;辫状河三角洲易形成地层—岩性油气藏和岩性油气藏,有利相带为辫状河三角洲平原辫状分流河道,辫状河三角洲前缘水下分流河道、河口坝、席状砂以及半深湖中的浊积岩体。古气候变化、构造—古地貌以及湖平面变化速率三者共同作用于扇三角洲和辫状河三角洲的沉积特征,其中构造—古地貌是主控因素。结合二者沉积特征差异,建立了中国东部箕状断陷湖盆扇三角洲和辫状河三角洲沉积模式图,以期能对相似构造背景下扇三角洲和辫状河三角洲的分析与研究提供一定的指导作用。

关键词：箕状断陷盆地扇三角洲辫状河三角洲

米仓山—大巴山前缘上三叠统须家河组四段砾岩特征及其对物源的指示

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地质论评 2013年第1期59卷 15-23页

作者：淡永林良彪钟怡江范昱中国地质科学院岩溶地质研究所广西桂林541004 国土资源部/广西岩溶动力学重点实验室广西桂林541004 成都理工大学沉积地质研究院成都610059 中国石化西北油田分公司勘探开发研究院乌鲁木齐830011

米仓山—大巴山前缘上三叠统须家河组四段(须四段)中广泛发育一套砾岩,根据野外剖面和钻井剖面研究,发现砾岩为一套冲积扇砾岩,分选较差,磨圆相对较好,厚度为0～70m并由北东向南西减薄。偏光显微镜鉴定发现须四段砾岩以硅质岩砾石为主,... 详细信息

米仓山—大巴山前缘上三叠统须家河组四段(须四段)中广泛发育一套砾岩,根据野外剖面和钻井剖面研究,发现砾岩为一套冲积扇砾岩,分选较差,磨圆相对较好,厚度为0～70m并由北东向南西减薄。偏光显微镜鉴定发现须四段砾岩以硅质岩砾石为主,含碳酸盐岩砾石、沉积石英岩砾石、(变)粉砂岩砾石及火山岩砾石,对火山岩砾石研究认为,南秦岭地区奥陶系—志留系火山岩为其母源。在结合硅质岩、(变)粉砂岩等砾石母源探讨后,认为须四段砾岩应来源于南秦岭地区,而砾石沉积时其母源区至少存在南华系—志留系地层。物源方向及母岩的确定可能对研究晚三叠世时期四川盆地演化、沉积环境及川东北地区须家河组有利油气储层展布等问题有重要意义。

关键词：川东北四川盆地上三叠统须家河组火山岩砾石南秦岭