【摘要】：航空磁測是進(jìn)行基礎(chǔ)地質(zhì)調(diào)查,特別是金屬固體礦產(chǎn)勘查的一個(gè)重要地球物理手段。獲取航空磁測數(shù)據(jù)后,通過必要的航磁異常位場轉(zhuǎn)換處理技術(shù),突出有用信息,研究磁場特征,并利用地物化遙資料開展綜合研究,識別和劃分區(qū)域地質(zhì)構(gòu)造,對于后期成礦預(yù)測至關(guān)重要。本文以識別和劃分內(nèi)蒙古二連浩特—東烏旗地區(qū)區(qū)域地質(zhì)構(gòu)造為研究目標(biāo),在實(shí)測獲取內(nèi)蒙古自治區(qū)二連浩特—東烏旗地區(qū)航磁數(shù)據(jù)的基礎(chǔ)上,通過對原始數(shù)據(jù)改正,繪制航磁基礎(chǔ)圖件,進(jìn)而對航磁△T數(shù)據(jù)化極、向上延拓、化極垂向一階導(dǎo)數(shù)及提取剩余異常等處理,獲得各類數(shù)據(jù)處理轉(zhuǎn)換圖件。本文在上述處理的基礎(chǔ)上,結(jié)合收集到的該區(qū)有關(guān)地質(zhì)資料及前人工作成果,對研究區(qū)的區(qū)域地質(zhì)構(gòu)造進(jìn)行了推斷和劃分。本文在數(shù)據(jù)獲取的基礎(chǔ)上,通過航磁信息挖掘技術(shù),對原始信息進(jìn)行增強(qiáng)、分類、變換等綜合處理,結(jié)合已有資料,編制了內(nèi)蒙古二連浩特—東烏旗地區(qū)斷裂構(gòu)造圖,并對重要斷裂構(gòu)造進(jìn)行了初步的地質(zhì)解釋研究。利用航磁資料對研究區(qū)構(gòu)造格架的識別和確定,提高了該地區(qū)基礎(chǔ)地質(zhì)調(diào)查程度,為后續(xù)地質(zhì)礦產(chǎn)資源評價(jià)與勘查提供了重要的航空物探成果資料。
[Abstract]:Aeromagnetic survey is an important geophysical method for basic geological survey, especially for metal solid mineral exploration. After the acquisition of aeromagnetic data, the useful information is highlighted, the magnetic field characteristics are studied, and the geophysical and chemical remote data are used to identify and divide the regional geological structure through the necessary processing technology of the aeromagnetic anomaly potential field conversion. It is very important for late metallogenic prediction. With the aim of identifying and dividing the regional geological structure in Erlianhaot-Dongwu Banner area of Inner Mongolia, based on the measured aeromagnetic data obtained in Erlianhaot-Donwuqi area of Inner Mongolia Autonomous region, the original data are corrected. The basic aeromagnetic map is drawn, and then the data processing of aeromagnetic T is obtained, such as pole digitization, upward extension, vertical first-order derivative of aeromagnetic pole, extraction of residual anomalies and so on, and all kinds of data processing and conversion maps are obtained. On the basis of the above treatment, combined with the relevant geological data collected in this area and the previous work results, the regional geological structure of the study area is inferred and divided. On the basis of data acquisition, through aeromagnetic information mining technology, this paper makes comprehensive processing of the original information, such as enhancement, classification, transformation and so on. Combining with the existing data, a fault structure map of Erlianhaot-Donwuqi area, Inner Mongolia, is compiled. A preliminary geological interpretation of important fault structures is also carried out. By using aeromagnetic data to identify and determine the structural framework in the study area, the degree of basic geological survey in this area is improved, and important geophysical exploration data are provided for the subsequent evaluation and exploration of geological and mineral resources.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P631.222

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本文編號：2230530