共查询到20条相似文献，搜索用时 109 毫秒
1.
一、铜
（一）主要、次要和较新的矿床类型
铜矿床的主要地质一工业类型如下：
——玄武岩类岛弧构造中的斑岩型铜矿床,这类矿床的特点是金含量较高; 相似文献
2.
甘肃红山地区重要控矿地质单元GF-1数据遥感解译与应用 总被引：1，自引：0，他引：1
为了解高分一号(GF-1)卫星图像在地质找矿领域的应用性能,查明甘肃红山地区的成矿地质环境,利用GF-1图像对红山地区的控矿地层、构造和岩体进行遥感解译。在收集、梳理前人研究成果和野外验证的基础上,综合分析红山地区的成矿地质特征和规律,总结区内与多金属矿密切相关的地质体,建立该区重要控矿地层、控矿构造和控矿岩体的GF-1图像解译标志;通过分析重要控矿地质单元的成矿地质特征和成矿规律,解析和挖掘典型矿床的控矿地质要素特征,整合典型矿床所处地质环境和控矿及赋矿要素信息,综合剖析典型多金属矿床的多源异常特征,构建找矿模型;开展找矿应用,圈定遥感找矿有利地段。经野外查证,新发现铜、钼、铁、锌等多金属矿化线索,均位于GF-1图像解译的重要控矿地质单元区,取得了较好的找矿成果,表明国产卫星数据能够很好地应用于地质矿产勘查领域。 相似文献
3.
以山西省遥感地质找矿为例,以区域地质和成矿理论为基础,通过对ETM+遥感图像进行控矿构造要素、控矿环形要素、色调异常、找矿标志、蚀变矿化异常等遥感要素的解译和研究,从宏观上总结了区域性大型断裂与成矿的关系,提出区域遥感地质找矿模型;在微观上圈定了遥感最小预测区,为矿产资源潜力评价和找矿预测提供重要线索和依据。所取得的成果和经验可为今后山西省的遥感地质找矿工作打下基础。 相似文献
4.
青海三江北段是我国重要的多金属成矿区带,具有形成大型、特大型金属矿床的赋存条件及地质背景。纳日贡玛矿床是该区带中最为典型的斑岩型Cu–Mo矿床。针对斑岩型矿床的典型蚀变分带特征,利用ASTER数据,采用Crosta技术和比值法进行高岭石化、青磐岩化、黄铁矿化和硅化等遥感蚀变异常信息的提取;通过对ASTER和QuickBird图像的遥感解译,获得花岗斑岩体和断裂构造的空间分布图;根据纳日贡玛矿床的成矿规律和控矿要素,利用遥感数据获得的找矿预测因子,圈定了8个具有良好找矿前景的遥感找矿预测区,并总结出纳日贡玛的遥感蚀变异常分带规律,可为三江北段成矿带中其他斑岩型Cu–Mo矿床的找矿勘查提供重要参考信息。 相似文献
5.
利用遥感图像上构造、火山机构有明显显示的特点以及研究区岩石裸露较好的条件,笔者在对多种类、多时相遥感图像进行综合地质解译的基础上,着重研究了利用遥感技术在火山岩地区进行找矿的方法,并分析了成矿条件与遥感影像之间的内在联系,进一步探讨了金、铜等有关矿种的找矿遥感影像标志,并进一步分析圈定了成矿有利地区。 相似文献
6.
7.
付洪波 《测绘与空间地理信息》2011,(6):82-84
借用光谱角制图法,依据所用数据与参考端元矢量之间的夹角不同,对研究区进行空间区域划分,在不同空间区域采用不同方法和参数提取遥感异常信息,所得结果结合遥感地质解译（岩性、构造）圈定出研究区内的找矿远景区。 相似文献
8.
云南锡矿遥感地质找矿模型 总被引：4，自引：1，他引：4
从云南锡矿床成矿地质环境、时空分布及矿床特征出发,将花岗岩的等级体制概念、控岩控矿构造的成矿构造体系概念和矿床展布的矿化单元等级体制概念引用到锡矿遥感地质模型研究中。根据丰富的锡矿地质科研资料与遥感图像的对应分析,发掘锡矿遥感影像-地质特征,进而拟建锡矿遥感地质找矿模型,即由赋锡总体特征模型、矿床定位最佳模型和影像-地质鉴别程序模型三部分组成的云南锡矿遥感地质找矿系列模型。 相似文献
9.
《国土资源遥感》2015,(3)
地处东昆仑造山带的青海省都兰县阿斯哈—按纳格地区是我国著名的成矿带之一,区内地质构造复杂,金属成矿作用极为发育,成矿潜力巨大。为了对该地区金矿整装勘查建立一套矿产快速评价方法组合体系,在研究阿斯哈—按纳格地区的区域地质特征与成矿地质条件基础上,结合矿床地质理论,建立以遥感地质矿产信息提取为中心的找矿技术方案,对整个研究区的Quick Bird,ASTER和ETM+等不同分辨率的卫星遥感图像进行了线-环构造解译和遥感矿化色调异常提取;在综合分析区内典型金矿床的遥感影像特征和筛选有利于成矿的线-环构造基础上,圈定出20个找矿有利部位。遥感矿化色调异常与化探异常的对比分析结果表明,两者的吻合度较高,对高效找矿勘查提供了重要依据。 相似文献
10.
世界遥感技术发展现状及其地质应用 总被引：4，自引：1，他引：3
本文概括了世界各国的航空航天遥感器技术的现状及未来,重点阐述了它在岩性填图、构造勾绘、蚀变带圈定、岩石矿物识别、含金石英脉确定、找矿靶区圈定以及成矿远景预测等遥感地质应用方面的研究成果。 相似文献
11.
12.
Conventional aerial Photographs coupled with the old and present topographical maps are used to map the flood affected areas of emphemeral streams around Mahilpur in Hoshiarpur district of Punjab State. These streams have their origin in the Sub-mountainous zone of Siwaliks in Punjab and being turbulent in nature are the main cause of Soil erosion in the Siwaliks. In the plains such streams spread out and deposit large amount of sand eroded from the Siwaliks over fertile lands resulting them unproductive. An endeavour has been made by the authors to delineate and study the past and present flood affected areas of these ephemeral streams in the light of flood protection measures; Soil conservation measures; and improved agricultural practices adopted by the State Government and the individual inhabitants of the area. 相似文献
13.
Ashok Marathe B. S. Chandrashekhar 《Journal of the Indian Society of Remote Sensing》2011,39(2):241-247
Kelshi is a coastal village, located on the southern bank of the Bharja river in Dapoli taluka of Ratnagiri district. All
along the coast occurs a habitation site which is overlaid by a sand deposit having a thickness of +20 m. The archaeological
artifacts collected around the site are found to be significant in understanding the antiquity of the site. It also substantiates
that, human occupation survived here for seven centuries. Remote sensing data interpretation carried out has revealed the
existence of three lineaments in this area. In the field, the lineaments have been confirmed as faulted surfaces and the magnitude
of the movements along are measurable. A geophysical survey was conducted by using ABEM WADI equipment for confirmation of
outcome of the aerial-photo interpretation. It confirms that the area had undergone three tectonic activities after 1524 A.D.
The inferences based on the investigations convinced us to study the historical seismicity of this region. A comprehensive
and exhaustive investigation in such areas is necessary to know the evolution of the west coast of India and the tectonic
activity during the late Holocene. 相似文献
14.
15.
A Jeyaram R Balasubramanian Y Vxxx N Krishna Murthy R L Karale Balbhir Singh 《Journal of the Indian Society of Remote Sensing》1993,21(3):167-177
Landsat MSS (1982) and IRS LISS-II (1989) data have been used to study the land use/land cover changes in Dalli-Rajhara iron ore mine area. Supervised classification has been performed on the temporal data to generate land use/land cover maps. Land use/land cover categories generated from IRS LISS-II data of 36 m resolution has been resampled to 80 m and areal statistics have been computed for 2, 4, 8 and 10 km wide strips around Dalli-Rajhara iron ore mine. The environmental impact due to on-going mining activities in the area has been analysed. The results of this study indicate that due to increase in mine-related and agricultural activities, forests have been degraded and also forest areas have been reduced considerably. 相似文献
16.
云南澜沧老厂银铅矿床环形构造研究及其地质效果 总被引：2，自引：1，他引：2
根据老厂地区遥感图像上环形影像特征及对应地面环形构造的产出地质构造环境分析,结合岩浆岩的发现及围岩蚀变、矿床地质、地球化学特征等,证实该环形影像为隐伏花岗岩体上侵、成矿热液上涌形成的环形构造的反映。老厂银铅矿床不是火山岩矿床,而是与隐伏岩体有关的中偏高温热液的多因复成矿床,并伴有银铅锌和铜金两种矿床产出。通过预测,在矿区深部已新找到了中型以上的铜矿床及小型以上的金矿床。 相似文献
17.
Evaluation of groundwater potential zones using Remote Sensing data in upper Vaigai river basin,Tamil Nadu,India 总被引：1，自引：0，他引：1
K Sankar 《Journal of the Indian Society of Remote Sensing》2002,30(3):119-129
The area of upper Vaigai river basin covering parts of Madurai and Theni Districts, in Tamil Nadu, faces acute water scarcity and chronically drought prone. The groundwater resources in the area have not been fully exploited. The present investigation has been made to evaluate the potential zones for groundwater targeting using IRS - ID LISS III geocoded data on 1:50,000 scale. The geology, geomorphology, lineament tectonic maps are generated and integrated to evaluate the hydrogeomorphological characteristics of the upper Vaigai river basin and demarcate the groundwater potential zones. A number of geomorphic units have been observed. Out this the more groundwater prospective units are buried pediment medium, buried pediment deep, flood plain, bajada and lineament and intersection of lineaments. Non potential areas like pediment, pediment inselberg, shallow pediment and pediplain were identified. 相似文献
18.
19.
This paper is based on the study done in Rohini and surrounding project area of Delhi. The objective of the paper is to evaluate the application of aerial remote sensing for preparing inventory of derelict land around urban areas. Inventory and monitoring of derelict lands is very important for urban planners and decision makers. Because of unmanageable growth of urban areas, the pressure on rich agricultural land in the urban-rural fringe is increasing day by day, while vast stretches of derelict land are lying unused. These derelict lands can be used for urban development, if properly mapped. An operational remote sensing methodology has been worked out. A classification has been developed and used for this study. Results of the ground truth collected have proved the efficacy of aerial remote sensing for such studies. 相似文献
20.
The area around Panwari town, Hamirpur district, Uttar Pradesh, faces acute water scarcity and chronically drought prone. The groundwater resources in the area have not been fully exploited. The present study was undertaken to evaluate the groundwater prospective zones. Landsat TM and IRS-1A LISS-II data have been used to differentiate different hydromorphogeological units and to delineate the major trends of lineaments. The digitally enhanced False Colour Composite, Principal Component Analysis and Edge Detections were useful for better correlation. The digital enhancement was helpful with identification of faint lineaments. In addition, the boundaries of various lands forms were better discriminable on the digitally enhanced products. The deeply and moderately weathered buried pediplains are the most potential zones for groundwater targeting. Occurrence of lineaments in such zones is also a favourable indicator. A number of promising groundwater well sites have been located in the pediplains. 相似文献