闽北浦城地区晋宁期小串花岗片麻岩地质特征   总被引：4，自引：0，他引：4  

傅树超  苏江湖 《福建地质》1994,13(4):227-234

闽北浦城地区广泛发育前震旦系麻源群变质岩，其内发现条带状花岗片麻岩，前人将其划归混合岩化变质地层，本文将其作为独立地质体详细论述其宏观及微观地质特征，确定其为花岗质正片麻岩，属中酸性深成岩体经受强烈变形变质作用产物，并正式命名为小串花岗片麻岩，时代属晋宁期。它为研究我省晋宁运动提供了重要资料。  相似文献   

Geochemical evaluation of cultivated soil elements in Pucheng County of Fujian Province     

MA Xiao  CHEN Zhixian  LIN Liangui  WANG Biao  DUN Yanran 《中国地质调查》2014,7(2):89-94

Pucheng County in Fujian Province is an important production area of rice and barley. The soil environmental quality and the content of beneficial nutrients directly affect the yield of crops and the quality of products. Based on the 1:50,000 soil geochemical survey results in Pucheng County, the plant essential nutrient elements, heavy metal elements, and beneficial element Se in the study area were evaluated according to the relevant standards and norms, so as to provide scientific basis for the development of high-quality land in the study area, the planting of featured agricultural products and the construction of high-standard farmland. The evaluation results show that: Essential macro elements of organic matter,N and alkali-hydrolyzed nitrogen are generally in rich-moderate state; P is generally in moderate-deficient state, and rapid available phosphorus is in deficient-very deficient state. K and rapid available potassium is in abundant state. Essential moderate element S is generally in rich-moderate state. Essential trace elements Fe, B and Mn are in a state of great deficiency. Mo is generally in very rich-rich state, and Zn and Cl are also mainly in very rich-rich state. Beneficial element Se is in an appropriate state, and the soil area rich in selenium is 6.41 km². Overall, the heavy metal elements in the soil of Pucheng County have reached the first grade soil environmental quality standard and have the ecological conditions for the development of healthy agricultural products.  相似文献   

濮城油田沙一段的储层非均质性研究   总被引：4，自引：0，他引：4  

胡望水  黄兰  熊平 《四川地质学报》2010,30(1):41-44

储层性质的好坏直接影响到油层的产能,注水效果及石油采收率。对濮城油田沙一段储层的非均质性从层内、层间、平面的非均质性三个方面作了系统研究,该区储层的非均质程度以严重非均质型为主,层内夹层多,层间非均质性强,层间隔层分布稳定,平面非均质性较强,油田开发以层内矛盾为主,所以研究层内非均质特征能为揭示砂体展布及合理划分开发单元,选择注采系统,为改善油田的开发效果,进行二、三次采油提供可靠的地质依据。  相似文献   

高分辨率层序地层学在濮城油田西区沙二上亚段2+3砂组末端扇沉积体系中的应用   总被引：1，自引：0，他引：1  

张晓华  张金亮 《地层学杂志》2008,32(4)

为提高研究区储层描述和剩余油预测的精度,综合运用高分辨率层序地层学理论方法与技术,以岩芯、测井资料为基础,对濮城油田西区沙二上亚段2+3砂组进行了高分辨率精细层序划分,运用基准面旋回原理,将沙二上亚段2+3砂组划分为一个中期旋回,作为等时地层格架,并且进一步进行了短期旋回的识别,作为等时地层对比单元。最终将沙二上亚段2砂组分为7个小层,3砂组分为9个小层,并在全区建立了高分辨率层序地层格架。通过单井岩芯观察和描述,对研究区内各砂组砂体和沉积微相进行了详细研究,最终建立了濮城油田西区沙二上亚段2+3砂组的沉积模式,认为该地区为具有恒定物源供给的细粒末端扇沉积体系,而非前人所认为的辫状三角洲沉积。研究区亚相类型主要为末端扇中部亚相,中部亚相又分为分流河道、泥滩、近水道漫溢和远水道漫溢4个微相。  相似文献   

福建浦城地区萤石矿床围岩和矿石地球化学特征及成因     

朱利岗  金松  王春连  商朋强  高立湧  王占兵 《岩石矿物学杂志》2021,40(5):923-938

福建浦城地区位于闽西北隆起带北部武夷成矿带,区内现有萤石矿(点)30余处,均产于北东向断裂带内.以浦城地区外洋、南山尖、黎处、龙头洋萤石矿和仁峰萤石矿化点为主要研究对象,对萤石和围岩二长花岗岩进行了地球化学分析.区内萤石矿呈块状、条带状、网脉状分布,主要可分为萤石型和石英-萤石型两种矿石.萤石稀土元素总量为12.22×...  相似文献