丹巴县措日铅多金属矿区土壤地球化学特征

通过对四川省丹巴县措日铅多金属矿床的土壤地球化学测量,查明了其元素含量特征,确定Pb、Zn、Sb为矿区的主要成矿元素。通过分析主要成矿元素的异常分布特点,结合成矿元素与伴生元素的组合特征,措日断裂为该区主要控矿构造的认识,是指导后续找矿的重要方向,矿质富集主要与中低温热液活动相关。

四川省乡城县日绒措铜矿区域地质特征分析

研究区处于高寒地区,地质勘查程度较低,尤其是矿体目前仅由少量地表工程控制。本文通过对研究区的区域概况、以往的地质勘查情况、区域地层及构造、岩性、地球化学特征等进行了综合性论述,为后续的地质找提供了理论据。

三则女嫁男型神话的比较研究

运用比较方法对三则同母题少数民族神话进行分析,尝试找出隐藏于文字背后的深层文化内涵和社会意义,可以获得神话的某种文化功能及其演变规律。

藏南拿日雍措片麻岩穹窿淡色花岗岩稀有金属的富集

拿日雍措穹窿(错那洞穹窿)位于北喜马拉雅穹窿的东部,穹隆内花岗岩种类较多,有淡色花岗岩、含石榴子石淡色花岗岩、片理化淡色花岗岩、含石榴子石和含绿柱石伟晶岩.这些花岗岩为经历了斜长石、锆石、独居石、磷灰石、富Ti矿物等分离结晶作用而形成的高度演化花岗岩,相对于维氏世界花岗岩平均值,富集Bi、Cs、Li、Sn、Be、Pb、B、W、Ta等稀有金属成矿元素,略贫Nb元素.同时,围岩也相对富集稀有金属元素.全岩地球化学分析表明,引起拿日雍措穹隆淡色花岗岩富集稀有金属成矿元素的因素是分离结晶作用和热液交代作用.高度演化淡色花岗岩在喜马拉雅造山带广泛分布,铌铁矿、钽铁矿、锡石和绿柱石等稀有金属矿物已在多处露头被识别,暗示了喜马拉雅淡色花岗岩是未来稀有金属矿产勘探的重要靶区.

Tourism spatial reconstruction of Chengde City under the influence of Holiday Tourism Circle of Beijing

Holiday Tourism Circle of Beijing (HTCB) is one of the nine key regions of Chinese tourism industry in the period of the 11th Five-Year Project. According to Tourist Marginal Utility Theory, Time-Distance Method is used to define HTCB in this paper. Chengde City, famous for its cultural tourism, is regard as one of the regions in Holiday Tourism Circle of Beijing. And this geographical advantage, in the context of the boom of tourism in China, is featured by the changes of tourist product structure and development model. In this paper, the influence upon Chengde tourism spatial structure has been discussed from tourist market, location and transportation. Chengde tourism spatial structure has been rebuilt with particular references to the factors of tourism destination district, tourist area, nodes, routes, and origin markets. In this paper, Chengde will develop tourism industry with the central heritage area as the center and northern forest and pasture area and southern mountain and lake area as the two wings.