四川攀枝花矿山公园创建及其意义     

陈斌  赵友年 《四川地质学报》2007,27(2):126-129

攀枝花钒钛磁铁矿的发现、勘探过程,矿石开采过程,矿石分选、冶炼过程以及钢、钛产品的加工过程等,每个过程都具有极高的科普价值、科考价值,同时具有极高的旅游观赏价值,将其作为旅游景观资源,创建攀枝花矿山公园意义重大。  相似文献   

攀枝花市地质灾害发育规律与防灾减灾对策研究     

马成兵  唐得胜  肖宇月  佘猛  郝雷 《中国地质调查》2022,9(4):37-44

针对四川省攀枝花市典型“干热河谷流域”地质灾害频繁成灾问题,在收集地质灾害资料收集的基础上,统计分析了不同类型地质灾害与地形地貌、岩土体类型等控灾因素的关系,系统分析了攀枝花市地质灾害发育分布规律,揭示了干热河谷区人类活动与地质灾害的密切关系,总结了区内昔格达组特殊易滑地层对区域地质灾害的影响特征。研究成果为区域工程和城镇规划建设过程中科学规避易滑地层等防灾减灾提出合理化建议,为地方政府防灾减灾及城乡建设规划提供参考依据。  相似文献   

Impact of Mining Activities upon Environment in Panzhihua Region, Southwestern China     

TENGY~  NIS~  WANG J~  ZHANG C~ XU Z~  TUO X~ 《地球科学进展》2004,(Z1)

Mining activities have left huge uncovered slopes, large areas of gangue ground and extensive railings dams. In this paper, we studied some impacts of mining activities upon environment in Panzhihua region, southwestern China. The environmental impacts include ecological destruction, geological disasters, environmental pollution, land damage, solid waste and occupational health effect in study area. The author suggested that local government should take some measure to reduce environmental impact in Panzhihua City. First, the countermeasure of reducing environmental impact is to set up ecological rehabilitation and environmental management system, which ensure the sustainable development of resources, environment, economy and society in this region. Second, the area needs to be monitored regularly for trace metal and other pollutants to forewarn urban eco-environmental safety.  相似文献   

攀枝花矿区表层土壤中钒的环境地球化学研究   总被引：5，自引：0，他引：5  

滕彦国  矫旭东  左锐  王金生 《吉林大学学报(地球科学版)》2007,37(2):278-283

在系统采集攀枝花采矿区周边地带的表层土壤样品及土壤剖面样品的基础上,通过地球化学调查和实验,研究了表层土壤中钒的分布规律、地球化学活动性及潜在的生态风险。结果表明：(1)攀枝花矿区大部分地带的表层土壤受到了钒的污染,表层土壤钒的平均含量是中国土壤背景值的279倍;(2)土壤剖面中钒的含量随深度增加而降低,表明土壤中钒的来源受母质影响较小;(3)采用富集因子得到的表层土壤钒的人为污染以轻微污染和中度污染为主;(4)采矿过程中产生的粉尘通过干沉降是引起表层土壤钒污染的主要原因;(5)表层土壤中钒以残渣态为主,其次为可氧化态和可还原态,而酸溶态所占的比例最小,但生物可利用的钒含量较高,存在轻微的生态风险。因此,应加强矿区钒污染的监测,制定有效控制对策,降低钒污染的生态风险。  相似文献   

辉长岩韵律层厚度的分形结构与模拟计算——以攀枝花层状侵入体为例     

欧新功  金淑燕  金振民 《地球科学》2001,26(6):603-608

运用分形理论对四川攀枝花层状侵入体的韵律层厚度进行分维计算, 并结合计算机模拟手段, 对韵律层理的成因进行了探讨.通过分形计算表明, 攀枝花层状侵入体的韵律层在厚度上具有分形结构, 其分维数介于1.4~1.8之间, 不同级别韵律层的厚度分维数不同, 韵律演化的级别越高, 厚度分维数越大.通过模拟计算的韵律色度分维数与实测韵律层的厚度分维数比较接近, 变化规律也比较相似, 这不仅说明在韵律的演化过程中, 厚度和色率之间有一定的内在联系, 也说明了重力在韵律形成机制中是一个重要的影响因素.地球的重力作用与地球的其他物理化学作用在空间和时间上耦合, 形成了这种具有时空分形结构的韵律现象.   相似文献   

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张希  张四新  王双绪 《大地测量与地球动力学》2009,29(3):16-23

???????????1990??1997??1997??2003??1994??2006??????????????????????λ??????о???Ms8.0???????????Ms6.1?????????????????????????????????????????????????????????????????????????μ???????????????????????????????????????μ??Χ??????????????????10???????????????????????????????????????????????????????1997??2003?????????????????????????????????????????  相似文献   

矿业活动固体废弃物中重金属元素释放机理 的浸出实验   总被引：1，自引：0，他引：1  

徐争启  倪师军  滕彦国  王金生  赵永鑫  张成江 《地质通报》2012,31(1):101-107

矿业活动中产生的固体废弃物包括废石、尾矿和冶炼废渣。这些固体废弃物堆放于露天环境,经过长期的自然风化作用,会对周围环境产生重要的影响。以攀枝花钒钛磁铁矿矿业活动为例,采集了废石、尾矿和冶炼废渣3种类型的固体废弃物,通过浸出实验,研究了不同粒度、不同pH值条件下这些废弃物中重金属元素的释放机理及其对环境产生的影响。结果表明,大多数元素在pH值条件偏小的环境中浸出率更大,在碱性环境中浸出率更小,但废石中的V、Cr和废渣中的Ti在碱性条件下浸出率更高;细粒样品在相同pH值条件下浸出率较粗粒大,但在pH=12的条件下Ti 、V、Ni、Cr和pH=1条件下Ti、Cr的浸出量出现反常,即在粗粒样品中高于细粒样品。固体废弃物释放的重金属元素会对周围环境产生一定的影响,需要加强监测。  相似文献   

攀枝花钒钛磁铁矿地质特征与成矿远景   总被引：1，自引：0，他引：1  

郭道军  于海军  王雪  孟标  吴得强  任海涛 《四川地质学报》2014,(4):523-528

攀枝花钒钛磁铁矿床主要赋存于华力西期的层状的基性辉长岩体之中,据岩石组合、矿物组合、结构、构造及矿化特征,含矿岩体大致划分6个岩相带4个含矿层;导矿构造、岩浆岩以及围岩条件是成矿的必要条件,根据1∶1万高精度磁测,研究区自西向东可分成南东(Ⅰ)及北西(Ⅱ)两个磁异常带,根据其形态、范围、强度,结合地质特征,圈出了9个局部磁异常区以及两类成矿远景区,为找矿工作提供了依据。  相似文献   

http://www.sciencedirect.com/science/article/pii/S1674987113000078   总被引：1，自引：0，他引：1  

Kwan-Nang Pang  Mei-Fu Zhou  Liang Qi  Sun-Lin Chung  Chiu-Hong Chu  Hao-Yang Lee 《地学前缘(英文版)》2013,4(5):517-533

A sequence of gabbros showing isotropic,layered and fine-grained textures is exposed in the Nalaqing mine at the southern tip of the～260 Ma Panzhihua intrusion,SW China.The field relations,structure,texture and mineralogy of the rocks indicate that the sequence represents the transition between the Lower zone and Middle zone of the intrusion.Isotropic gabbros characteristic of the Lower zone pass upward to layered gabbros of the Middle zone through a～5 m-thick microgabbro sheet,within and close to which small-scaled, concordant Fe-Ti oxide ore horizons are identified.Strong fractionation between HFSE and REE in a subset of samples is ascribed to cumulus titanomagnetite into which HFSE are preferentially incorporated over REE,as reflected in the parallel relations between Nb/La,Hf/Sm and Ti/Ti^*.Both the isotropic and layered gabbros display cumulate textures and have similar mineral compositions(Mg^# of clinopyroxene =～76-79 and An_59-61),isotopic compositions[(⁸⁷Sr/⁸⁶Sr)i = 0.7044-0.7045 andε_Nd（t） = +2.4 to +3.9]and trapped liquid contents inferred from Zr abundance（～17-34 ppm）.However,there are substantial variations in elemental abundances（V,Cr and PGE） and ratios（Ti/V,La/Yb,Ba/Y and Cu/Pd） between the two types of gabbros,features that cannot be explained by cumulate formation from a common magma in a closed system.The microgabbros generally resemble high-Ti Emeishan basalts in major element compositions,but their low trace element abundances indicate some lost of residual liquid is inevitable despite rapid nucleation and cooling.Combined with available data and observations,we propose a model involving in-situ crystallization,followed by magma recharge and closed-system fractionation to explain the formation of texturally distinctive gabbros at Nalaqing and the evolution of the lower part of the Panzhihua intrusion.  相似文献   

http://www.sciencedirect.com/science/article/pii/S1674987113000315   总被引：2，自引：0，他引：2  

Clement Ganino  Nicholas T.Arndt  Catherine Chauvel  Alexandre Jean  Charlotte Athurion 《地学前缘(英文版)》2013,4(5):535-546

The Panzhihua gabbroic intrusion,part of the plumbing system of the Emeishan large igneous province, intruded late-Proterozoic dolomites and marls about～263 Ma ago.The dolomites in the contact aureole were converted to brucite marbles and a diverse suite of forsterite,diopside and garnet skarns.The variation in mineralogy is explained in part by differences in the composition of the protolith,particularly the proportion of silica minerals and clay,and in part by transfer of elements from intruding magmas.The trace element compositions of most marbles and skarns are very similar to those of unmetamorphosed dolomites and marls,but some contain high Si,Ti,and Fe contents that are interpreted to have come from a magmatic source.Three brucite marbles sampled～10 m from the contact of the intrusion and named "enriched brucite marble" have trace element compositions very different from their dolomitic protolith:their rare earth elements are strongly enriched whereas levels of Nb-Ta,Zr-Hf and Ti are very low.These characteristics resemble those of carbonate liquid in equilibrium with silicate liquid or more probably with silicate minerals in the case of Panzhihua,a similarity we take to indicate that the sample underwent partial melting.Samples taken up to 300 m from the contact contain brucite indicating that high temperatures persisted well into the country rocks.However,other samples collected only tens of metres from the contact are only slightly recrystallized indicating that conditions in the aureole were highly variable.We suggest that temperatures within the aureole were controlled by conduction of heat from the main intrusion and by supply of additional heat from abundant small dykes within the aureole.Circulation of fluids derived from deeper levels in the aureole flushed the carbon dioxide from the dolomite,lowering temperature needed to partially melt carbonate to the temperatures attained near the intrusion.Irregular but extensive heating destabilized the carbonates of the aureole and decarbonation reactions associated with carbonate breakdown and melting emitted a large volume of CO₂,with potential impact on global climate.  相似文献