The source and its change with the time of clastic sediments in several major stratigraphic subunits are studied by comparing the Th content and Sm/Nd ratio values between the Phanerozoic sediments of different ages and the related Precambrian s.
通过对比不同时代的显生宙沉积地层与相关前寒武纪地层之间Ｔｈ含量和Ｓｍ／Ｎｄ比值，研究了各沉积小区碎屑沉积物随时代变化而发生的物源变化，由此讨论了南、北秦岭之间以及与扬子北缘之间前寒武纪基底抬升和块体聚会的时
Debris scores were calculated after photographing with a digital camera.
冲洗后纵向劈开标本,采用数码照相机照相和扫描电镜观察,分别计算比较根管内碎屑百分数及牙本质小管开口数。
Debris scores were calculated after photographing with a digital camera and the number of visible open dentinal tubules was evaluated by SEM.
采用数码照相机照相和扫描电镜观察,分别比较根尖1/3区和根中1/3区根管内的碎屑百分数和牙本质小管开口数。
Objective To explore the best way to reduce the forming of debris of rubber stopper by using No.
目的探讨用12号侧孔针头与斜面针头穿刺胶塞配药减少碎屑形成的最佳方法,为临床提供指导。
Promising natural gas exploration belts in clastic rock formations,Sichuan Basin;
四川盆地碎屑岩领域有利天然气勘探方向浅析
Feasibility of time-lapse seismic monitoring in long-period water-drive continental facies clastic rock reservoir.;
陆相碎屑岩油藏长期水驱时移地震监测的可行性
Sedimentary facies of lower Cretaceous clastic rock in Hongshan area in the north edge of Qaidam Basin;
柴达木盆地北缘红山地区下白垩统碎屑岩沉积相特征
Application of paleosols in terrigenous clastic rocks to stratigraphic analysis;
陆源碎屑岩中的古土壤在地层分析中的应用
The clastic rocks in Permian System at the southeast area of Ordos Basin contain tremendous potential in exploration of natural gas.
鄂尔多斯盆地东南部二叠系碎屑岩具有巨大的天然气勘探潜力。
The middle-upper Jurassic clastic rocks in Qiangtang basin, north Tibet are characterized by their great thickness.
详细野外剖面测量基础上,对羌塘盆地东部中-上侏罗统剖面主要岩类的宏观特征(颜色和构造)、物质组分、结构及磁化率等特征进行系统研究,研究区碎屑岩主要为砾岩、砂岩、粉砂岩和泥岩等岩类,磁化率值呈现低→高→低→高→低(雀莫错组→布曲组→夏里组→索瓦组→雪山组)的规律性变化。
Pre-Mesozoic basement provenance tracing of the Songliao Basin by means of detrital zircon SHRIMP chronology;
用碎屑锆石SHRIMP年代学方法恢复松辽盆地南部前中生代基底的源区特征
Formation time of supracrustal rocks in Tiejiashan granite of the Anshan area:evidence from detrital zircon SHRIMP dating;
鞍山地区铁架山花岗岩中表壳岩的碎屑锆石SHRIMP年龄及其地质意义