本文選題：鈾礦 + 滿洲里-靈泉地區(qū)��； 參考：《吉林大學(xué)》2015年碩士論文

【摘要】：滿洲里-靈泉地區(qū)地處克魯倫-額爾古納火山巖型鈾礦成礦帶內(nèi)，與處于同一成礦帶內(nèi)的俄羅斯斯特列措夫鈾礦田和蒙古多爾諾特鈾礦田具有相似的鈾成礦地質(zhì)條件，具有良好的找礦前景。遙感找鈾主要是利用遙感手段研究與鈾礦相關(guān)的遙感地質(zhì)信息及遙感蝕變信息，本文在研究中分別運(yùn)用了OLI、ETM+和ASTER多光譜遙感數(shù)據(jù)，對(duì)研究區(qū)進(jìn)行了遙感地質(zhì)構(gòu)造解譯和遙感異常信息的提取，取得成果如下： 1.遙感地質(zhì)信息的研究。利用OLI、ETM+、DEM數(shù)據(jù)，根據(jù)遙感影像的色調(diào)、地形、地貌、水系、紋形圖案等建立解譯標(biāo)志對(duì)研究區(qū)的線環(huán)構(gòu)造進(jìn)行了構(gòu)造解譯。解譯出區(qū)內(nèi)的構(gòu)造格局：區(qū)內(nèi)線構(gòu)造發(fā)育，主要成因?yàn)閿鄬�、�?jié)理裂隙和巖性界線等，各方向均有發(fā)育，其中東西向?yàn)樽钤缙�，可�?jiàn)明顯受后期構(gòu)造改造特征；北西向發(fā)育最晚（或是繼承性新的活動(dòng)）。其中，北東向的主干斷裂、次級(jí)斷裂或斷裂相交部位以及火山機(jī)構(gòu)共同構(gòu)成了研究區(qū)火山巖型鈾礦成礦的構(gòu)造條件，控制著鈾礦的形成。 2.遙感異常信息提取的研究。根據(jù)野外采集的巖石樣本描述和測(cè)得的光譜信息以及區(qū)域地質(zhì)背景資料，分析了研究區(qū)內(nèi)主要的蝕變類型及其光譜特征。在可見(jiàn)光-短波紅外光譜范圍內(nèi)，利用ASTER數(shù)據(jù)的1-9波段數(shù)據(jù)，采用主成分分析法，設(shè)計(jì)波段組合，提取了與鈾成礦相關(guān)的綠泥石化、絹云母化、碳酸鹽化和鐵染蝕變，并成圖分級(jí)顯示提取結(jié)果。在熱紅外光譜范圍內(nèi)，將ASTER熱紅外10-14波段數(shù)據(jù)的DN值轉(zhuǎn)為發(fā)射率，利用SiO2含量反演的公式提取了研究區(qū)內(nèi)的硅化信息，并成圖分級(jí)顯示。大型的斷裂活動(dòng)致使熱液上升形成硅化斷裂帶，，在SiO2含量圖上會(huì)呈現(xiàn)一定的線性特征。 3.將研究區(qū)的構(gòu)造解譯結(jié)果與遙感異常提取結(jié)果疊加，結(jié)合野外巖石樣本和已知鈾礦（異常）點(diǎn)進(jìn)行分析。發(fā)現(xiàn)，斷裂構(gòu)造發(fā)育的東部地區(qū)SiO2含量較高，硅化蝕變發(fā)育，并且構(gòu)造斷裂與SiO2含量高的硅化斷裂帶相吻合，已知巖石樣本和鈾礦點(diǎn)均有硅化蝕變發(fā)育。斷裂之間的交錯(cuò)為礦液的運(yùn)移提供了良好的通道，而周邊的斷裂破碎帶為鈾礦提供了儲(chǔ)存礦液的空間，這些部位為鈾的遷移和富集提供了構(gòu)造環(huán)境，是成礦的有利地段。所提取的蝕變信息與鈾異常點(diǎn)的吻合程度較好，在一定程度上能指示鈾礦（異常）的存在。
[Abstract]:The Manzhouli-Lingquan area is located in the Crulen-Erguna volcanic type uranium metallogenic belt, and has similar uranium metallogenic geological conditions with the Russian Stryzov uranium ore field and the Mongol Dornot uranium ore field, which are located in the same metallogenic belt. It has a good prospect of prospecting. Remote sensing is mainly used to study remote sensing geological information and remote sensing alteration information related to uranium deposits. In this paper, OLII-ETM and ASTER multispectral remote sensing data are used in the study, respectively. The remote sensing geological structure interpretation and remote sensing anomaly information extraction are carried out in the study area. The results are as follows: 1. The study of remote sensing geological information. Based on the data of OLIX ETM / Dem and the tone, topography, geomorphology, water system and pattern of the remote sensing image, the structural interpretation of the linear ring structure of the study area is carried out. The structural pattern in the area is interpreted as follows: the inner line of the area is developed, mainly due to faults, joint fissures and lithologic boundaries, all of which are developed in each direction, of which the east-west direction is the earliest, which can be seen obviously by the characteristics of late structural transformation; NW trending is the latest (or inherited, new) activity. Among them, the main faults, the secondary faults or the intersecting parts of the faults and the volcanic mechanism constitute the tectonic conditions of the volcanic type uranium deposits in the study area, which control the formation of the uranium deposits. 2. Research on extraction of abnormal information from remote sensing. The main alteration types and their spectral characteristics in the study area are analyzed based on the description of rock samples and the spectral information measured in the field and the regional geological background data. In the range of visible light and short wave infrared spectrum, using 1-9 band data of ASTER data and principal component analysis (PCA), the green mud, sericite, carbonization and iron stain alteration related to uranium mineralization were extracted. The extraction results are shown in graph grading. In the range of thermal infrared spectrum, the DN value of ASTER thermal infrared 10-14 band data is converted into emissivity, and the silicification information in the study area is extracted by using the formula of SiO2 content inversion, and displayed in graph grading. Large-scale fault activity leads to hydrothermal rise to form silicified fault zone, which shows certain linear characteristics on SiO2 content diagram. 3. The results of structural interpretation and remote sensing anomaly extraction are superimposed, and the field rock samples and known uranium deposits (anomalies) are analyzed. It is found that the SiO2 content is relatively high in the eastern area where the fault structure is developed, and the silicide alteration is developed, and the structural fault coincides with the silicified fault zone with high SiO2 content. The known rock samples and uranium ore sites have silicified alteration development. The interlacing of faults provides a good channel for the migration of ore fluid, while the surrounding fracture zone provides a space for uranium ore to store, which provides a tectonic environment for uranium migration and enrichment, and is a favorable metallogenic area. The obtained alteration information is in good agreement with the uranium anomaly and can indicate the existence of uranium deposits to some extent.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P627;P619.14

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王麗晶;吳學(xué)峰;關(guān)雷;;淺析沿海區(qū)域衛(wèi)星遙感影像圖像增強(qiáng)技術(shù)研究[J];測(cè)繪與空間地理信息;2012年05期

2 劉德長(zhǎng);楊旭;張杰林;;新型遙感技術(shù)數(shù)據(jù)的鈾資源勘查應(yīng)用[J];地球信息科學(xué)學(xué)報(bào);2009年03期

3 黃照強(qiáng);李祥強(qiáng);;基于ASTER和ETM+數(shù)據(jù)的蝕變信息提取比較研究——以西藏澤當(dāng)?shù)V田為例[J];地質(zhì)與勘探;2009年05期

4 張玉君,楊建民,陳薇;ETM~+(TM)蝕變遙感異常提取方法研究與應(yīng)用——地質(zhì)依據(jù)和波譜前提[J];國(guó)土資源遙感;2002年04期

5 朱黎江,秦其明,陳思錦;ASTER遙感數(shù)據(jù)解讀與應(yīng)用[J];國(guó)土資源遙感;2003年02期

6 趙玉靈;遙感找礦模型的研究進(jìn)展與評(píng)述[J];國(guó)土資源遙感;2003年03期

7 劉德長(zhǎng);趙英俊;楊旭;;新世紀(jì)以來(lái)鈾礦地質(zhì)遙感的科技進(jìn)步與持續(xù)發(fā)展[J];國(guó)土資源遙感;2010年01期

8 傅肅性;地學(xué)分析在遙感專題制圖中的應(yīng)用[J];國(guó)土資源遙感;1994年03期

9 李劍峰,趙英俊,劉德長(zhǎng),付錦;靈泉盆地多源地學(xué)信息綜合巖性識(shí)別方法探討[J];國(guó)土資源遙感;1999年02期

10 羅毅;中亞-東蒙古-遠(yuǎn)東地區(qū)火山巖型鈾礦概況及成礦規(guī)律[J];國(guó)外鈾金地質(zhì);1994年03期

本文編號(hào)：1911571