| 区域控矿断裂带的航空高光谱遥感技术研究——以黑石山-花牛山深大断裂带为例 |
| |
| 引用本文： | 刘德长.区域控矿断裂带的航空高光谱遥感技术研究——以黑石山-花牛山深大断裂带为例[J].地质与勘探,2015,51(2):366-375. |
| |
| 作者姓名： | 刘德长 |
| |
| 作者单位： | 核工业北京地质研究院遥感信息与图像分析技术国家级重点实验室,北京,100029 |
| |
| 基金项目： | 中国地质调查局项目（1212011220277）资助 |
| |
| 摘 要： | 利用引进的CASI/SASI/TASI成像光谱系统在甘肃北山柳园-方山口地区获得了3500km2的高空间、高光谱分辨率遥感数据。应用该数据对柳园-方山口地区十余种矿化相关蚀变进行了精细矿物填图,根据蚀变矿物与断裂构造的空间关系,可以区分出成矿构造与非成矿构造。将识别出的成矿构造进行组合,可以得到研究区的成矿构造格架,再将该区已知矿床(点)分布图与其叠合,可以看出:该区已知矿床(点)明显受成矿构造格架控制。深入分析发现,其中黑石山-花牛山大断裂带为成矿构造格架的主干构造。该断裂带在遥感图像上呈"之"字形,通过对受该断裂控制的岩浆岩的岩性识别,确认其为一条深切硅镁壳的深大断裂带。断裂带的EW段在岩浆活动期间被拉张,造成花岗岩类-超基性岩浆的侵入,为成矿提供了重要的物源和热源。在成矿期黑石山-花牛山深大断裂带扭动方向发生了反转,由成岩期的右行变为左行,EW区段由拉张变为挤压,造成成矿热流体上升和对含矿地层的改造,有利于多金属矿床的形成。通过建立航空高光谱遥感找矿模型并开展模式找矿,在柳园-方山口地区新发现了7处多金属矿的找矿靶区(金3处,镍1处,钨钼1处,铜钼1处,铅银1处)。上述研究说明,航空高光谱遥感技术可以从一个新的角度来研究区域控矿断裂带及其成矿作用,并以新的思路和方法指导区域找矿工作。
|
| 关 键 词： | 航空高光谱遥感 黑石山-花牛山大断裂带 深部构造 流体成矿作用 |
| 收稿时间： | 2014/8/19 0:00:00 |
| 修稿时间： | 2014/12/12 0:00:00 |
Application of airborne hyper-spectrum remote sensing to mapping of ore-control faults: A case study of the Heishishan-Huaniushan fault |
| |
| Liu De-chang.Application of airborne hyper-spectrum remote sensing to mapping of ore-control faults: A case study of the Heishishan-Huaniushan fault[J].Geology and Prospecting,2015,51(2):366-375. |
| |
| Authors: | Liu De-chang |
| |
| Institution: | Beijing Research Institute of Uranium Geology, Beijing;China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing |
| |
| Abstract: | The airborne remote sensing data with a total area of 3500km2 of the Liuyuan-Fangshankou were acquired by the CASI/SASI/TASI imaging spectrometer of the National Key Laboratory of Science and Technology on Remote Sensing Information and Image Analysis. These datasets were used to extract alternation, distinguish mineral bearing and barren structures, and map ore-controlling structural framework of the Liuyuan-Fangshankou area. After overlapping the localities of the ore deposits on the map of the structural framework, it is clear that more than 90% mineral deposits are associated with regional faults, among which the Heishishan-Huaniushan fault is distinguished as the main ore-controlling fault in the Liuyuan-Fangshankou area. This fault is zigzag in shape, and deeply cuts into the simatic layer of the curst. The EW section of the fault was extended during the period of magma activity, leading to the emplacement of the magma and the accumulation of heat and ore materials. It changed into compression during the mineralization period, which was favorable for the transportation of fluids and reformation of the ore-bearing strata. On the basis of the hyper-spectrum remote sensing ore exploration model, several ore prospecting areas have been determined (3 for gold, 1 for nickel, 1 for tungsten and molybdenum, 1 for copper and molybdenum, and 1 for lead and silver), indicating an important role of hyper-spectrum remote sensing in structural analysis and ore prospecting. |
| |
| Keywords: | airborne remote sensing Heishishan-Huaniushan fault deep structure fluids and mineralization |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《地质与勘探》浏览原始摘要信息 |
| 点击此处可从《地质与勘探》下载免费的PDF全文 |
|
