本文選題：ASTER + 礦化蝕變分帶　； 參考：《昆明理工大學(xué)》2015年碩士論文

【摘要】：在中國(guó)的西南三江的中段,義敦島弧南端的云南普朗斑巖型銅礦區(qū),是目前中國(guó)銅多金屬重要的成礦帶,區(qū)內(nèi)普朗銅礦已達(dá)到超大型規(guī)模,松諾和地蘇嘎銅多金屬礦也已達(dá)到小型以上規(guī)模。隨著普朗斑巖型銅礦找礦勘查的深入,該礦床成因與演化等地質(zhì)研究工作也得到了不斷深化。但普朗礦區(qū)海拔較高(3000-4800m),相對(duì)高差大,地質(zhì)背景復(fù)雜,植被茂密,年積雪時(shí)間長(zhǎng),交通條件差,傳統(tǒng)地質(zhì)測(cè)量及測(cè)試分析工作受到制約,嚴(yán)重影響了該區(qū)的找礦勘查進(jìn)展。礦化蝕變地質(zhì)異常信息經(jīng)常會(huì)呈現(xiàn)出微弱或低緩的信息,且這些異常信息常常會(huì)和背景的干擾信息相互混合與疊加在一起,以往用于礦化蝕變?nèi)醍惓Ｐ畔⑻崛〉倪b感數(shù)據(jù)在前期處理中往往將植被、陰影、云、雪以及水體等全部作為干擾信息將其去除,這樣許多較弱的蝕變異常信息也一起被去除,從而遙感蝕變異常信息完整與準(zhǔn)確的提取受到了一定程度的影響；此外,以往的多數(shù)研究側(cè)重于對(duì)羥基、鐵染等類型蝕變信息的提取,針對(duì)斑巖型銅礦含礦斑巖體,硅化、鉀化—絹英巖化—青磐巖化分帶等找礦標(biāo)志的診斷性波譜特征分析及其精細(xì)化提取則較少涉及。針對(duì)以往研究中存在的不足：對(duì)礦化蝕變信息的提取精細(xì)化程度較低、對(duì)推進(jìn)西南三江地區(qū)斑巖型銅礦深部找礦勘查支撐作用有限,本論文針對(duì)普朗斑巖型銅礦區(qū)的礦化蝕變分帶,對(duì)其礦化蝕變分帶的特征礦物組成、診斷性波譜和該區(qū)ASTER遙感波譜響應(yīng)進(jìn)行分析與研究；采用多重分形“廣義自相似性”和“局部奇異性”理論與含量面積法(C-A法),分析研究在復(fù)雜地質(zhì)背景條件下斑巖型銅礦蝕變分帶特征礦物的弱信息增強(qiáng)與提取方法,其主要弱信息包括：青磐巖化(綠泥石、綠簾石)、硅化絹云母化(石英、絹云母)、鉀化(鉀長(zhǎng)石)硅化(石英)；最后經(jīng)對(duì)蝕變分帶的結(jié)果進(jìn)行實(shí)地查證及巖礦鑒定,印證了本文所構(gòu)建的對(duì)于斑巖型銅礦蝕變分帶遙感異常增強(qiáng)與提取方法的可靠性。
[Abstract]:The Plang porphyry copper deposit at the southern end of Yidun Island Arc is an important copper polymetallic metallogenic belt in China at present, and the Plang copper deposit has reached a very large scale in the middle section of Sanjiang River in southwest China. Sonno and Disuga copper polymetallic ore have also reached a small scale above. With the exploration of porphyry copper deposits in Plang, the geological research on the genesis and evolution of the deposit has been deepened. But in Plang mining area, the relative height difference is large, the geological background is complex, the vegetation is dense, the annual snow cover is long, the traffic condition is poor, and the traditional geological survey and test and analysis work are restricted, which seriously affects the progress of prospecting and exploration in this area. The information of mineralized alteration geological anomalies often presents weak or low information, and these abnormal information are often mixed and superimposed with the interference information of the background. The remote sensing data, which were used to extract the weak anomaly information of mineralization and alteration in the past, tend to remove vegetation, shadow, cloud, snow and water as interference information in the previous processing, so that many weaker abnormal information of alteration are also removed. Therefore, the complete and accurate extraction of alteration anomaly information by remote sensing is affected to some extent. In addition, most previous studies have focused on extracting alteration information of the type of alteration such as hydroxyl group and iron stain, aiming at silicification of porphyry copper ore-bearing porphyry bodies. The diagnostic spectral characteristics analysis and fine extraction of the ore-prospecting markers such as potated-sericite and Qingiranlizhuan are less involved. In view of the shortcomings of previous studies, the extraction of mineralization alteration information is of low precision, which is of limited support to the Prospecting and exploration of porphyry copper deposits in Sanjiang area, southwest China. In this paper, the characteristic mineral composition, diagnostic spectrum and ASTER remote sensing spectral response of the mineralized alteration zone in Plang porphyry copper ore area are analyzed and studied. Based on the multifractal theory of "generalized self-similarity" and "local singularity" and the content area method of C-A method, the method of enhancing and extracting weak information of porphyry copper alteration zone characteristic minerals under complex geological background is analyzed and studied. The main weak information includes: Qingiranlitization (chlorite, verdanite, siliconized sericite (quartz, sericite), potassium (potassium feldspar) silicification (quartz); finally, the results of altered zonation are verified on the spot and the rock and ore are identified. It is confirmed that the method of remote sensing enhancement and extraction of alteration and variation zones of porphyry copper deposits is reliable.
【學(xué)位授予單位】：昆明理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P618.41;P627

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李文昌;曾普勝;;云南普朗超大型斑巖銅礦特征及成礦模型[J];成都理工大學(xué)學(xué)報(bào)(自然科學(xué)版);2007年04期

2 范玉華;李文昌;;云南普朗斑巖銅礦床地質(zhì)特征[J];中國(guó)地質(zhì);2006年02期

3 成秋明;非線性礦床模型與非常規(guī)礦產(chǎn)資源評(píng)價(jià)[J];地球科學(xué);2003年04期

4 閆柏琨,王潤(rùn)生,甘甫平,劉圣偉,楊蘇明,陳偉濤,唐攀科;熱紅外遙感巖礦信息提取研究進(jìn)展[J];地球科學(xué)進(jìn)展;2005年10期

5 成秋明;;成礦過(guò)程奇異性與礦產(chǎn)預(yù)測(cè)定量化的新理論與新方法[J];地學(xué)前緣;2007年05期

6 劉素紅,馬建文,藺啟忠;通過(guò)Gram-Schmidt投影方法在高山區(qū)提取TM數(shù)據(jù)中含礦蝕變帶信息[J];地質(zhì)與勘探;2000年05期

7 鄒林;楊自安;朱谷昌;吳德文;相愛(ài)芹;;多光譜遙感蝕變信息提取新方法研究[J];地質(zhì)與勘探;2006年06期

8 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

9 劉成,金成洙,李笑梅,王丹麗;利用混合像元線性分解模型提取臥龍泉地區(qū)粘土蝕變信息[J];地質(zhì)找礦論叢;2003年02期

10 趙志芳;黨偉;王瑞雪;于其芬;;基于證據(jù)權(quán)重法的區(qū)域地質(zhì)環(huán)境穩(wěn)定性遙感評(píng)價(jià)研究[J];國(guó)土資源遙感;2010年S1期

相關(guān)碩士學(xué)位論文 前3條

1 余海軍;中甸普朗銅礦床三維數(shù)字模型的建立及其應(yīng)用[D];昆明理工大學(xué);2009年

2 李青;普朗斑巖銅礦床斑巖特征及其成礦意義[D];中國(guó)地質(zhì)大學(xué)（北京）;2009年

3 王鋒德;基于ASTER數(shù)據(jù)的遙感地質(zhì)信息提取及綜合成礦預(yù)測(cè)研究[D];云南大學(xué);2013年

，

本文編號(hào)：1800270