二连浩特—东乌旗地区航磁异常特征及区域地质构造识别
发布时间：2018-09-08 12:33
【摘要】：航空磁测是进行基础地质调查,特别是金属固体矿产勘查的一个重要地球物理手段。获取航空磁测数据后,通过必要的航磁异常位场转换处理技术,突出有用信息,研究磁场特征,并利用地物化遥资料开展综合研究,识别和划分区域地质构造,对于后期成矿预测至关重要。本文以识别和划分内蒙古二连浩特—东乌旗地区区域地质构造为研究目标,在实测获取内蒙古自治区二连浩特—东乌旗地区航磁数据的基础上,通过对原始数据改正,绘制航磁基础图件,进而对航磁△T数据化极、向上延拓、化极垂向一阶导数及提取剩余异常等处理,获得各类数据处理转换图件。本文在上述处理的基础上,结合收集到的该区有关地质资料及前人工作成果,对研究区的区域地质构造进行了推断和划分。本文在数据获取的基础上,通过航磁信息挖掘技术,对原始信息进行增强、分类、变换等综合处理,结合已有资料,编制了内蒙古二连浩特—东乌旗地区断裂构造图,并对重要断裂构造进行了初步的地质解释研究。利用航磁资料对研究区构造格架的识别和确定,提高了该地区基础地质调查程度,为后续地质矿产资源评价与勘查提供了重要的航空物探成果资料。
[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.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.222
本文编号：2230530
[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.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P631.222
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