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Organic Material and Trace Elements of Bituminous Rocks in the Ozankiiy Field, Ankara, Turkey 
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下载免费PDF全文 Saday Azadoglu ALIYEV Ali SARI 《《地质学报》英文版》2007,81(4):658-667
Bituminous rocks in the Ozankoey （Ankara） field are different from those of the Paleocene- Eocene Mengen and Giineytepe （Bolu） regions in metal enrichment levels. Organic carbon （Corg） content of organic material-rich rocks in the Ozankoey （Ankara） field is 3.66-40.72% wt averaging 14.34%. The dominant organic materials are algae/amorphous accompanied by minor amount of herbaceous material （The dominant kerogen type is Type-I with a limited amount of Type-Ⅱ kerogen.）. The bituminous rocks in the Ozankoey field are enriched in heavy metals such as Ni, Mn, As and Cr. In comparison with the average enrichment values of dements, Ni, Mn, As and Cr in bituminous shales of the Ozankoey field are as about 4.38, 14.93, 10.90 and 5.58 times as average values. The average concentrations of these heavy metals are also as high as 215× 10^-6, 828 × 10^-6, 58.54 × 10^-6, and 148 × 10^-6 respectively. In addition, sorption properties of day and organic materials are also important for metal enrichments in the bituminous shales. 相似文献
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Organic Material and Trace Elements of Bituminous Rocks in the Ozank(?)y Field,Ankara,Turkey 下载免费PDF全文
下载免费PDF全文 Bituminous rocks in the Ozank(?)y(Ankara) field are different from those of the Paleocene- Eocene Mengen and Güineytepe(Bolu) regions in metal enrichment levels.Organic carbon(C_(org)) content of organic material-rich rocks in the Ozank(?)y(Ankara) field is 3.66-40.72% wt averaging 14.34%.The dominant organic materials are algae/amorphous accompanied by minor amount of herbaceous material(The dominant kerogen type is Type-Ⅰwith a limited amount of Type-Ⅱkerogen.). The bituminous rocks in the Ozank(?)y field are enriched in heavy metals such as Ni,Mn,As and Cr.In comparison with the average enrichment values of elements,Ni,Mn,As and Cr in bituminous shales of the Ozank(?)y field are as about 4.38,14.93,10.90 and 5.58 times as average values.The average concentrations of these heavy metals are also as high as 215×10~(-6),828×10~(-6),58.54×10~(-6),and 148×10~(-6) respectively.In addition,sorption properties of clay and organic materials are also important for metal enrichments in the bituminous shales. 相似文献
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烟煤的宏观煤岩分类是煤岩学研究的内容之一。本文建立了烟煤按煤岩成分-宏观煤岩类型进行两级划分的宏观煤岩分类系统,提出了划分宏观煤岩类型的定性和定量指标,制定了宏观煤岩类型的分类方案,规定了描述方法、内容和要求。 相似文献
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塔里木盆地志留系沥青砂岩的特性及其成因 总被引：20，自引：0，他引：20
采用有机岩石学和有机地球化学相结合的方法,详细研究了塔里木盆地志留系沥青砂岩的特征及其成因。色质分析表明,志留系沥青砂岩含高的三环二萜烷且以Ｃ２３为主峰,与石炭系源岩不同,γ 蜡烷含量不高,代表藻类生源的β 胡萝卜烷含量较高,且具高孕甾烷、高重排甾烷的特征,反映沥青砂岩油源来自下古生界。有机岩石学研究表明,由于沥青砂岩含可溶性物质甚高,其油浸反射率（Ｒｂ为０２７％～０３６％）不能反映其真实成熟度,水浸反射率（Ｒｗ为１３５％～１５３％）与上下地层成熟度相吻合,排除了沥青砂岩“新生古储”的可能性。碳同位素分析结果进一步证实沥青砂岩源自下古生界的生油岩,是早古生代古油藏遭受后期构造破坏的结果。 相似文献
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The Silurian bituminous sandstones(SBS) in the Tarim Basin, China are important basinwide reservoirs with an estimated area of approximately 249000 km2. We investigated the ages of authigenic illites in the SBS reservoirs and constrained their formation timing by using the ~(40)Ar/~(39)Ar step wise heating method. The age spectra, ~(39)Ar recoil loss and their controlling factors were investigated systematically. The ~(40)Ar/~(39)Ar ages were compared with the conventional K/Ar ages of identical clay fractions. The clay in the SBS reservoirs is dominated by orderly mixed-layer illite/smectite(I/S) with 5%–30% smectite layers. The I/S minerals morphology comprises primarily honeycomb, short filamentous and curved-lath particles, characteristic of authigenic illites. The unencapsulated ~(40)Ar/~(39)Ar total gas ages(UTGA) of the authigenic illites range from 188.56 ± 6.20 Ma to 491.86 ± 27.68 Ma, which are 7% to 103% older than the corresponding K/Ar ages of 124.87 ± 1.11 Ma to 383.45 ± 2.80 Ma, respectively. The K-Ar ages indicate multistage accumulations with distinct distribution patterns in the Tarim Basin: older(late Caledonian-early Hercynian) around the basin margin, younger(late Hercynian) in the basin centre, and the youngest(middle to late Yanshanian) in the Ha-6 well-block, central area of the North Uplift. The age difference is believed to have been caused by the ~(39)Ar recoil loss during the irradiation process. Compared with the K/Ar ages, the estimated ~(39)Ar recoil losses in this study are in the range from 7% to 51%. The ~(39)Ar recoil loss appears to increase not only with the decreasing particle sizes of the I/S, but also with increasing percentage of smectite layers(IR) of the I/S, and smectite layer content(SLC) of the samples. We conclude that due to significant ~(39)Ar recoil losses, UTGA may not offer any meaningful geological ages of the authigenic illite formation in the SBS and thus can not be used to represent the hydrocarbon charge timing. ~(39)Ar recoil losses during ~(40)Ar/~(39)Ar dating can not be neglected when dating fine authigenic illite, especially when the ordered mixed-layer I/S containing small amount of smectite layers(IR30%) in the reservoir formations. Compared with the unencapsulated Ar-Ar method, the conventional K-Ar method is less complicated, more accurate and reliable in dating authigenic illites in petroleum reservoirs. 相似文献
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高宝屯 《物探化探计算技术》2007,(Z1)
根据平面电磁波在具有不同物理性质的介质分界面发生的反射规律,利用雷达实测信号的幅值信息,实现了公路层介电常数的自动计算。并根据物理模型实验结果,建立了沥青材料含水率与介电常数之间的数学关系模型。利用这二项技术可以实现应用探地雷达技术检测沥青公路的含水状况。 相似文献
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通过对冀北坳陷中新元古界下马岭组进行剖面实测,对下马岭组底部的沥青砂岩进行室内薄片鉴定和扫描电镜分析,观察与分析了下马岭组沥青砂岩的出露分布特征,镜下研究了此砂岩的碎屑颗粒和填隙物的组分特征和磨圆、分选、粒度等结构特征,依据岩石学特征、粒度分析系列参数等研究了沥青砂岩的沉积环境。结果表明此砂岩为成分与结构成熟度均高的纯石英砂岩和石英砂岩,硅质与沥青质填隙、沥青含量达5%~15%,细粒为主,分选好到极好。粒度分析是本段松散状沥青砂有效环境判别标志。综合分析认为下马岭沥青砂岩形成于无障壁海岸体系的滨浅海环境,形成于前滨到临滨的海相高能环境,可能的沉积位置是前滨下部到中上临滨;此砂岩主要来自临滨潮下高能带的沉积物、含部分前滨下部沉积物、也夹少量潮汐水道沉积物。不同剖面位置所处的沉积环境不同,凌源地区和平泉地区为临滨带的中上部的水下高能带沉积为主,宽城地区为临滨带上部沉积和前滨下部沉积,凌源地区和宽城地区也包含少量的潮汐水道沉积。 相似文献
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Interactions between organic matter and minerals in two bituminous coals of different rank 总被引：1，自引：0，他引：1
S. Pusz A. Krztoń J.L. Komraus M.R. Martínez-Tarazona A. Martínez-Alonso J.M.D. Tascón 《International Journal of Coal Geology》1997,33(4):369-386
The association between specific mineral and organic constituents in two Asturian bituminous coals of different rank was studied. For this, raw coals were fractionated by density and the variation of a number of parameters was followed in parallel. Results of coal chemical analyses, including analyses for 22 elements, were used to establish the elemental association with coal organic matter. Petrographic analyses determined the distribution of macerals among densimetric fractions, vitrinite reflectance being at a minimum in the intermediate density fractions. Mineral species were identified by X-ray diffraction, FT-IR spectroscopy and Mössbauer spectroscopy. Comparison of trends for different parameters determined using this set of techniques allowed classification of the various minerals according to their association with organic matter. Carbonates seem to be specifically associated with the organic matter of the low-volatile bituminous coal whereas sulfides concentrate in the organic matter of the high-volatile bituminous coal. Vitrinite is the maceral exhibiting the most probable association with inorganic matter. The possibility of a merely physical association of fine-grained detrital minerals with organic matter cannot be excluded; nevertheless, one must bear in mind that even this type of interaction is important due to its effect on various coal preparation and utilization processes. 相似文献