Geochemistry of the Eocene Jijuntun Formation oil shale in the Fushun Basin,northeast China: Implications for source-area weathering,provenance and tectonic setting

Within the fault-bound Fushun Basin of northeastern China, the Eocene Jijuntun Formation hosts extensive deposits of thick lacustrine oil shale. Systematic sampling and geochemical analysis of these deposits has revealed that the parent rocks of the oil shale underwent moderate chemical weathering; and that its mineralogy and trace and rare earth element geochemistry were mainly controlled by parent rock composition, with no synsedimentary changes in the source terrain. Based on source rock and tectonic setting discrimination diagrams, we concluded that the parent rocks of the oil shale were mostly basalts of the Paleogene Laohutai Formation. These basalts originated in a continental back arc environment and contain abundant nutrient elements such as Fe, P, Ni, Cu and Zn, all of which are essential for the growth of aquatic photoautotrophs in lakes. Continuous, high primary productivity in the Jinjuntun lacustrine depocentre, combined with a stable tectonic setting and underfilled sedimentary environment, were key factors in the genesis of its oil shale.     

人工影响天气用碘化银催化剂对区域环境影响的研究进展

中国自1958年以来开展人工影响天气作业。碘化银作为主要的催化剂,是否会对环境造成影响备受关注。分析了国内外使用碘化银开展人工增雨雪和人工防雹外场试验作业后降水、土壤和湖泊等的Ag+含量,尽管催化后Ag+含量会有不同程度的增加,尤其是地面燃烧炉催化和人工防雹作业,但降水和水库中的Ag+含量远低于饮用水标准。统计了我国外场人工影响天气作业的碘化银用量,结合降水和水库中Ag+浓度观测,认为我国人工影响天气使用的碘化银不会对水资源和环境造成影响。     

杭州市钱塘新区地下空间开发地质环境适宜性评价

地下空间地质环境适宜性评价是实现地下空间合理有序开发的重要环节,也是国土空间科学规划的必要前提。通过系统分析杭州市钱塘新区地质环境条件,从地形地貌、工程地质条件、水文地质条件、活动断裂及地震效应、环境地质问题等五个方面选取15个指标构建了地下空间开发地质环境适宜性评价指标体系。在此基础上,采用变权层次分析法和灰色关联分析模型,对浅层(0~ 15m)、次浅层(15~ 30m)、次深层(30~ 50 m)地下空间进行了开发利用地质环境条件适宜性评价。结果表明,研究区浅层和次深层地下空间更适宜开发,而次浅层地下空间适宜性好和适宜性较好的总面积仅占全区的45.7%,地质环境条件复杂,具有一定的开发难度。该结果可为钱塘新区地下空间合理开发提供参考。     

发动机燃烧室内壁材料热环境的气动热试验模拟技术研究

利用超声速矩形湍流导管和等离子电弧加热器模拟了发动机燃烧室内流和高超声速飞行器外壁面外流热环境,进行了平板表面冷壁热流测量和燃烧室内壁材料考核试验。结果表明:由于辐射换热的影响,在选取的两个典型来流条件下,发动机燃烧室内流热环境下的冷壁热流比外流热环境下的高出21%和40%,但是冷壁热流的增量基本相当,约为0.70~0.80MW/m²。随着冷壁热流的增加,辐射换热产生的热流增量的影响力会逐渐减小。材料考核时,相同配方的C/SiC复合材料在内流热环境下的表面温度高出约400℃,背面温度高出约90℃,这种差异对于发动机燃烧室内壁面材料考核至关重要,必须在材料考核试验中加以考虑。      

辽宁庄河地区构造变形及构造演化初探

辽宁庄河地区构造活动强烈，构造变形样式多种多样，反映了在不同体制下，构造变形由下部构造层次到上部构造层次的系统变化，从早期褶皱变形到后则破裂变形过程中岩石韧性递减的系统演变。笔者利用构造解析方法，初步确定了该区的构造序列并探讨了构造演化过程。     

ON REGIONAL DIFFERENTIATION OF RIVER WATER ENVIRONMENT CAPACITY AND STRATEGIES TO CONTROL WATER ENVIRONMENT POLLUTION IN CHINA

ＯＮＲＥＧＩＯＮＡＬＤＩＦＦＥＲＥＮＴＩＡＴＩＯＮＯＦＲＩＶＥＲＷＡＴＥＲＥＮＶＩＲＯＮＭＥＮＴＣＡＰＡＣＩＴＹＡＮＤＳＴＲＡＴＥＧＩＥＳＴＯＣＯＮＴＲＯＬＷＡＴＥＲＥＮＶＩＲＯＮＭＥＮＴＰＯＬＬＵＴＩＯＮＩＮＣＨＩＮＡ￥ＷａｎｇＨｕａｄｏｎｇ（王华...     

俄远东、中国东北的构造特点及岩石圈深部的不均一性

俄罗斯远东和中国东北前新生代可划分为８个大地构造单元。区域地质、深部地质、地球物理及新构造研究表明，地壳和地幔深部的不均一性反映了该区主要构造单元的深部构成和大地动力学等方面的特点。地热和地磁资料表明，远东地区软流层顶部具有起伏形态的特点，最大深度２００～２５０ｋｍ，浅部仅１００～１４０ｋｍ，松辽盆地７５～１００ｋｍ；在中国东北及亚太过渡带上地幔低速层厚度在０～１００ｋｍ之间变化，计算数据表明，本区地壳厚度为３０～４４ｋｍ，变化幅度为１４ｋｍ。     

凡纳滨对虾高位池养殖系统的水质理化状况

对凡纳滨对虾高位养殖池水质环境状况进行了研究。结果表明,养殖期间虾池水体透明度前期较高,中后期较低;虾池pH变化在7.89~9.02之间,变化幅度较小。虾池水体悬浮物数量和CODMn随养殖时间延长而持续升高,变化范围分别为18.5~162.3 mg/L和3.52~14.58 mg/L。虾池水体中营养盐各月份波动较大,无机氮的数量变化在0.206~1.621 mg/L之间,含量逐渐升高,磷酸盐数量变化在0.009~0.067 mg/L之间,含量逐渐下降。水环境中N、P比较高,平均为62.7。养殖水体中后期处于严重富营养化状态。     

Problems of the aquatic environment and countermeasures in the rapid economic development in the Zhujiang River Delta

The Zhujiang (Pearl) River Delta is the rapid economic development region in China since the opening and reform door policy was carried out in 1978. Being the rapid development of industry and city, the impact on the aquatic environmental quality was significant. The pollution caused the water quality descended and the ecological system degraded, and also impeded the economic development. The characteristics and problems of the aquatic environment are: the capacity of aquatic environment is large but hasn’t been utilized rationally, the water quality is influenced by saline sea water and tide current, the main pollutants are organic matter and the pollution is going heavier, the concentration of pollutants change seasonally. The countermeasures of aquatic environmental protection are: carrying out the environmental functional regionalization and controlling the total amount of pollutant discharge, revising the industrial structure and making a rational industrial arrangement, raising the rate of waste water treatment and making a full assessment of the water conservancy project.     

矿业开发与生态环境一体化

概述了矿业开发与生态环境的关系 ,矿业开发与生态环境一体化的原则和组织 ,国内外现状和发展趋势 ,对河南省矿业生态环境存在问题及其原因进行了综合分析 ,论述了矿业开发与生态环境一体化的准则与前景 ,提出今后工作建议。