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- Keywords Yichuan area;Yanchang Formation;heavy mineral group;paleocurrent;rare earth element;sedimentary source; 宜川地区;延长组;重矿物组合;古水流;稀土元素;物源;
- heavy mineral group 重矿物组合
- The mantle mineral group in Tibet has great significance in mineralogy an d geodynamics. 西藏地幔矿物群,无论在矿物学和地球动力学上均有重要意义。
- Gold and other heavy mineral placers are notable examples of lag deposits, but gravel and boulder bars are more common. 金和其它重矿沙虽是蚀余沉积物中值得注意的例子，然而卵石和顽石沙洲都是比较普遍的。
- Samples of water and heavy mineral concentrates are also taken at the same sites. 在这些地点也提取了水和重矿物质浓缩物的样本。
- Billingsley's company, Great West Mineral Group of Saskatoon, owns the Hoidas Lake project on the northern fringe of Saskatchewan. 还有比利斯利的公司，在萨斯喀彻温省西北边辉达斯湖有（稀土开采）项目的大西部矿业集团公司。
- The Subei basin is characterized by quartz and feldspar with abundant volcanic grains.The two basins are of different heavy mineral assemblage. 这两个盆地也具有不同的重矿物组合，与阿克塞盆地相比，肃北盆地含有较多的不稳定矿物（绿帘石和角闪石）。
- Objective:To investigate the illness of cervical carcinoma in the female workers of Xuzhou Mineral Group Company and evaluate the value in diagnosis of TBS system. 目的:调查徐州矿务集团女工宫颈癌的发病情况,评价TBS分级系统的诊断价值。
- On the basis of the study of the geological characteristics of a placer gold deposit, and the heavy sand mineral composition as well as the major heavy mineral characteristics. 根据砂金矿床的地质特征,重砂矿物组合以及主要重砂矿物特征,认为该矿床是近源型砂金矿,其形成与位于砂金矿南的各贡弄斑岩型铜金矿床有关。
- The data of sandstone thin section, heavy mineral and rare earth element combining with the former research efforts are applied to analyze the provenance of Chang 8 period in Jiyuan area. 摘要利用砂岩薄片鉴定、重矿物及稀土元素等资料，并结合前人的研究成果，对鄂尔多斯盆地姬塬地区延长组长8时期的物源进行了分析研究。
- Methods Using the three parameters of heavy mineral assemblage of detrital rock,coarse fragment component and mineralogic maturity,the basin sedimentary boundaries will be foun and studied. 方法从大量的地质资料入手,利用碎屑重矿物组合、粗碎屑组分和矿物成熟度3种参数确定古盆地边界。
- Provenance analysis mainly includes comparison of debris compositions, heavy mineral assemblages, sedimentary facies, geochemical analysis, cathodoluminescence image of quartz and so on. 物源区分析技术主要包括碎屑成分对比技术、重矿物分析技术、沉积相分析技术、地球化学分析技术、石英阴极发光分析技术等。
- a heavy mineral oil used as fuel in diesel engines. 柴油发动机所用的一种重型矿物油。
- Among them, 12 assemblages area of heavy minerals were formed under the control of lithological and tidal current. 在岩性和潮流控制下，共形成了12区重矿物组合。
- He lugged a heavy handcart along. 他使劲拉走那笨重的手推车。
- heavy mineral [heavy petroleum] spirit 重质溶剂油; 重石油醚
- It possessed rich mineral deposits, including gold. 它拥有丰富的矿藏，包括黄金。
- Along the Gambia river,the heavy minerals are characterized by the presence of ilmenite,rutile and zircon as well as accompanied native gold, lead and copper minerals, etc. 冈比亚河沿岸重矿物以钛铁矿、金红石、锆石为其特征，并伴有自然金、铅族、铜族等矿物。
- He made manful efforts to move the heavy furniture. 他作出勇敢的努力搬动沉重的家具。
- She could only croak because of her heavy cold. 她因患重感冒只能用沙哑的声音说话。
