江汉平原古生界构造结构特征及油气勘探方向

江汉平原古生界具有北西—南东向分为三块、北东—南西向分为三带及纵向上多层楼的构造结构特征。三个区块为当阳—京山构造区、荆州—仙桃构造区及鄂城—大冶构造区,每个区块均可划分出三个次级构造带,并在全区形成三个构造变形分带。这三个分带在变形强度、构造样式等方面具有特征性差异:北东侧的构造分带受东秦岭—大别山造山运动产生的挤压应力的直接作用,显示以逆冲推覆结构为主要特征;南西侧的构造分带在三个构造区有差别,在当阳—京山构造区形成斜坡稳定带,在另两个构造区则以推覆叠瓦构造为特征;中部构造分带一般显示前缘断褶或复合叠加构造。当阳—京山构造区东部和鄂城—大冶构造区应以逆冲推覆体为勘探对象;荆州—仙桃构造区的仙桃地区应以上古生界油气藏为勘探目标;当阳—京山构造区西部宜昌稳定带和荆州—仙桃构造区的珂理—簰洲地区则应以下古生界油气藏为勘探目标。     

ENVISAT-1卫星测高数据编辑标准的研究

介绍了环境卫星(ENVISAT-1)的基本情况及其主要技术参数,在借鉴其他卫星测高数据编辑标准和大量统计基础上,制定了ENVISAT-1卫星的数据编辑标准,包括冰标志和S波段异常的确定,并给出了各改正项合理的限值。     

甘肃省锰矿资源现状及勘查方向

从甘肃锰矿资源现状、基本特点、主要类型,以及今后的找矿方向等问题进行初步的探讨。并依据成矿地质条件、勘查工作程度、锰资源潜力等因素优选划分了6个找矿远景区。     

黑龙江省桦南县二伐区岩金矿床地质特征与找矿标志

介绍了金矿床的地质特征、矿石特征、矿化富集规律,最后确定了找矿标志及找矿方向。     

Mapping of moraine dammed glacial lakes and assessment of their areal changes in the central and eastern Himalayas using satellite data

The relatively rapid recession of glaciers in the Himalayas and formation of moraine dammed glacial lakes(MDGLs) in the recent past have increased the risk of glacier lake outburst floods(GLOF) in the countries of Nepal and Bhutan and in the mountainous territory of Sikkim in India. As a product of climate change and global warming, such a risk has not only raised the level of threats to the habitation and infrastructure of the region, but has also contributed to the worsening of the balance of the unique ecosystem that exists in this domain that sustains several of the highest mountain peaks of the world. This study attempts to present an up to date mapping of the MDGLs in the central and eastern Himalayan regions using remote sensing data, with an objective to analyse their surface area variations with time from 1990 through 2015, disaggregated over six episodes. The study also includes the evaluation for susceptibility of MDGLs to GLOF with the least criteria decision analysis(LCDA). Forty two major MDGLs, each having a lake surface area greater than 0.2 km2, that were identified in the Himalayan ranges of Nepal, Bhutan, and Sikkim, have been categorized according to their surface area expansion rates in space and time. The lakes have been identified as located within the elevation range of 3800 m and6800 m above mean sea level(a msl). With a total surface area of 37.9 km2, these MDGLs as a whole were observed to have expanded by an astonishing 43.6% in area over the 25 year period of this study. A factor is introduced to numerically sort the lakes in terms of their relative yearly expansion rates, based on their interpretation of their surface area extents from satellite imageries. Verification of predicted GLOF events in the past using this factor with the limited field data as reported in literature indicates that the present analysis may be considered a sufficiently reliable and rapid technique for assessing the potential bursting susceptibility of the MDGLs. The analysis also indicates that, as of now, there are eight MDGLs in the region which appear to be in highly vulnerable states and have high chances in causing potential GLOF events anytime in the recent future.     

Evaluation System for Yunnan Cultural Tourism Routes Based on a Five Component Model: Case Study of the Ancient Tea-horse Road in the South of Yunnan

Cultural tourism routes can reveal and protect cultural tourism heritage by means of cultural tourism in the “time category” and the “space category”. The construction of an evaluation system for cultural tourism routes and the evaluation, scoring and grading of existing and potential cultural tourism routes are the key to the protection of heritage, history and culture along these routes, and the key to encouraging the standardization, branding and sustainable development of various formats on the routes. Yunnan cultural tourism routes are diverse and rich in resources, and their developmental foundation is good. However, the tourism development and cultural development activities occur along separate lines and there is a lack of unified management. Therefore, it is necessary to conduct research on information collection, information analysis, problem diagnosis and improvement of status in the local practices of Yunnan cultural tourism routes, and to guide the sustainable development of Yunnan cultural tourism routes. Based on the advanced experience of COE (Council of Europe), UNESCO WHC (United Nations Educational, Scientific and Cultural Organization, World Heritage Committee) and ICOMOS(International Council on Monuments and Sites), this paper comprehensively analyzes the decisive criteria for line evaluation by interpreting and summarizing the connotations of cultural tourism routes, and determines that the evaluation of cultural tourism routes should include lines. Five aspects―the theme, the participating subject, the object itself, related activities and multi-party value―are used to construct a five-component model. At the same time, based on the consumer utility function, a complete route evaluation and hierarchical system is constructed. Then, taking the Ancient Tea-horse Road cultural tourism route as an example and using the expert scoring method and the analytic hierarchy process, the actual scores and grades of the Ancient Tea-horse Road cultural tourism route are determined, and countermeasures and suggestions for its sustainable development are proposed. The paper also verifies the applicability and practicability of the evaluation system, and promotes and improves the feedback evaluation system. The aim is to at promote and widely apply the evaluation system of cultural tourism routes, realizing the transformation from individual cases to joint cases, and promoting the standardization and sustainable development of cultural tourism routes.     

中国九龙江河口营养盐基准值研究

One of the key concerns in estuarine and coastal environments is eutrophication, which is known to be closely connected to nutrient enrichment. To control and improve surface water quality, nutrient criteria are recommended in order to provide reference conditions for the environment. However, the current datasets of nutrient criteria in China are either designed for surface water or sea water, and as such these are not suitable for assessing estuarine water quality, especially given the unique ecosystem and dynamic properties of estuaries. To address this issue in current estuarine water management, nutrient criteria have been developed for a local estuary in the southeast of China. Segmentation of the Jiulong River Estuary, China was firstly analysed through field investigations carried out during 2013–2014, which resulted in the delineation of three segments characterized by their distinct properties in relation to salinity, hydrology, ecosystems, etc. Historical records from 1997 to 2014 were then analysed using statistical modelling to develop candidate nutrient criteria for the estuary.This stage of the analysis was undertaken in combination with the study of nutrient status records from the 1980s,which were used to establish a baseline reference condition. The recommended criteria values of dissolved inorganic nitrogen(DIN) in Segments Ⅰ, Ⅱ and Ⅲ of the Jiulong River Estuary are 64, 21 and 14 μmol/L,respectively, and the corresponding values for soluble reactive phosphorus(SRP) are 0.89, 0.76 and 0.89 μmol/L,respectively. It should be emphasised that these values are site-dependent, and that different results may be achieved at other locations depending on the physical and biogeochemical characteristics of an estuary, or even a single site within a catchment. It is hoped that by demonstrating a possible methodological approach and methods of nutrient criteria derivation in the Jiulong River Estuary, the current study will offer researchers some fundamental basis from which to begin to develop more complete nutrient criteria indices for the study of nutrient conditions in other estuaries throughout China.     

对铀矿水文地球化学找矿工作中某些问题的探讨

本文在总结铀矿水分散体规模的基础上,对铀矿水文地球化学代矿工作的网度要求进行了讨论,提出区调阶段的工作比例尺为1:20万—1:10万,普查阶段为1:5万—1:2.5万,详查阶段为1:1万—1:5000;在阐明各工作阶段所圈定的水文地球化学场的地质含义的基础上,讨论了中、小比例尺水文地球化学调查工作的原理、效果及技术要求。提出了在潮湿多雨地区开展水分散流找矿的合理性和优越性。指出了水分散流找矿的关键是分析方法的灵敏度和精度。在水文地球化学调查中要注意通用找矿标志和矿化度(电导)的取样分析工作。     

中国铀资源特点及找矿方向

中国铀矿地质勘查工作,在50年代中期为矿山建设提供了第一批可资利用的铀矿储量;60年代中国至70年代中期,使东南地区成为最重要的铀矿资源基地;70年代中期以来,展现了中国东北部找铀矿的巨大潜力,南部也取得了好的成果。中国铀矿资源时空分布和产出的特征是:矿床分布广泛,地区间差异明显;矿床产出时代新,矿床以中小规模为主,矿石平均品位中等;矿床以围岩分类:花岗岩型、火山岩型(占总储量的61％),砂岩型(占21％),碳硅泥岩型(占13％)。借鉴西方国家70年代以来该项工怍飞速发展及重大突破的经验,为保证中国铀矿勘查工作长期稳步发展,有大的突破,必须加强西部地区的区调普查,实现找矿中心的战略转移。为此,近期我们要做好以下工作:调整队伍部署,提高技术素质;加强经济评价,做好宏观调控;加强资源评价,制定勘查规划;依靠科技进步,实现铀矿勘查工作的现代化。