東北地區(qū)大型斷裂構(gòu)造重力異常解釋研究
發(fā)布時間：2018-12-14 12:12
【摘要】：分析總結(jié)學(xué)習(xí)以往的重力勘探數(shù)據(jù)處理解釋方法,本文通過對“全國礦產(chǎn)資源潛力評價”項目重力匯總成果的斷裂構(gòu)造部分的研究學(xué)習(xí),運用斷裂位置計算的新方法對東北地區(qū)斷裂構(gòu)造進行進一步研究,通過郯廬斷裂的北段—已知的依舒斷裂段進行對比驗證,證實斜導(dǎo)數(shù)水平導(dǎo)數(shù)方法的可行性,得到中國東北地區(qū)斷裂構(gòu)造結(jié)構(gòu)框架,以及該斷裂框架與東北構(gòu)造單元和礦產(chǎn)分布的疊加關(guān)系顯示,初步獲得對斷裂控礦的新認識,進一步深入的探討了東北地區(qū)構(gòu)造格架的重磁場特征,及其與資源的關(guān)系。為該地區(qū)的資源勘探提供了重要的依據(jù)。通過對東北研究區(qū)的研究,本文取得的主要研究成果如下:(1)本文研究了在多種模型體存在下的重力異常的水平梯度,垂向梯度,斜(Tilt)導(dǎo)數(shù)及斜(Tilt)導(dǎo)數(shù)水平導(dǎo)數(shù)的剖面曲線異常特征,總結(jié)了這四種導(dǎo)數(shù)方法在探測模型邊界的應(yīng)用中的誤差情況和限制條件;通過地質(zhì)上已知特征的依舒斷裂段,驗證方法的有效性。(2)對東北地區(qū)的布格異常圖、剩余異常圖和航磁異常圖對研究區(qū)進行重力分區(qū);結(jié)合基礎(chǔ)地質(zhì)背景研究資料,前人認識成果,得到不同地塊和地塊結(jié)合帶異常分區(qū)界限的基礎(chǔ)認識,基于重力異常在數(shù)理基礎(chǔ)上反映的是塊體體積效應(yīng)、在地質(zhì)客觀上揭示自古到今多次地質(zhì)構(gòu)造運動綜合效應(yīng)的特點;(3)用斜(Tilt)導(dǎo)數(shù)和斜(Tilt)導(dǎo)數(shù)水平導(dǎo)數(shù)方法對研究區(qū)重力數(shù)據(jù)進行反演,得到該區(qū)隱伏大型斷裂構(gòu)造框架,對一級斷裂進行初步解釋,與全國礦產(chǎn)潛力評價項目中重力推斷的斷裂成果進行初步比較;并通過截取剖面數(shù)據(jù)對大興安嶺斷裂帶深部的傾斜方向進行初步判斷;(4)通過利用推斷得到的大型隱伏斷裂與油氣資源、固體礦產(chǎn)分布情況進行對比分析,得到東北地區(qū)大型斷裂與油氣和固體礦分布關(guān)系的基本特征;
[Abstract]:This paper analyzes and summarizes the previous methods of data processing and interpretation of gravity exploration. In this paper, the author studies the fault structure part of the gravity aggregate results of the "National Mineral Resources potential Evaluation" project. The new method of fault location calculation is used to further study the fault structure in Northeast China. The feasibility of the horizontal derivative method of oblique derivative is verified by comparing the northern section of the Tanlu fault with the known Yishu fault section. The structural framework of faults in Northeast China and its superposition relationship with the tectonic units and mineral distribution in Northeast China show that a new understanding of fault ore-controlling is obtained. The characteristics of gravity and magnetic field of the tectonic framework in Northeast China and its relationship with resources are further discussed. It provides an important basis for resource exploration in this area. The main results obtained in this paper are as follows: (1) the horizontal and vertical gradients of gravity anomalies in the presence of various models are studied in this paper. The profile curve anomaly characteristics of oblique (Tilt) derivative and oblique (Tilt) derivative horizontal derivative are summarized. The error and limitation conditions of these four derivative methods in detecting model boundary are summarized. The validity of the method is verified by the Yishu fault segment with known geological characteristics. (2) gravity zoning of the study area is carried out on the Bouguer anomaly map, residual anomaly map and aeromagnetic anomaly map of northeast China; Combined with the basic geological background research data and previous achievements, the authors obtained the basic understanding of the zoning boundaries of anomalies in different plots and combined zones. Based on the gravity anomaly, the block volume effect is reflected on the basis of mathematical theory. From the geological objective point of view, the characteristics of the comprehensive effects of geological tectonic movements from ancient to present are revealed. (3) the gravity data of the study area are inversed by the methods of oblique (Tilt) derivative and oblique (Tilt) derivative horizontal derivative, and the structural framework of the concealed large fault in this area is obtained, and the primary interpretation of the first order fault is carried out. A preliminary comparison is made with the fracture results derived from gravity inference in the national mineral potential evaluation project. The inclined direction in the deep part of the Daxing'anling fault zone is preliminarily judged by intercepting the profile data. (4) by comparing and analyzing the distribution of large hidden faults and oil and gas resources and solid minerals, the basic characteristics of the relationship between large faults and distribution of oil, gas and solid minerals in Northeast China are obtained.
【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】：P631.1
本文編號：2378591
[Abstract]:This paper analyzes and summarizes the previous methods of data processing and interpretation of gravity exploration. In this paper, the author studies the fault structure part of the gravity aggregate results of the "National Mineral Resources potential Evaluation" project. The new method of fault location calculation is used to further study the fault structure in Northeast China. The feasibility of the horizontal derivative method of oblique derivative is verified by comparing the northern section of the Tanlu fault with the known Yishu fault section. The structural framework of faults in Northeast China and its superposition relationship with the tectonic units and mineral distribution in Northeast China show that a new understanding of fault ore-controlling is obtained. The characteristics of gravity and magnetic field of the tectonic framework in Northeast China and its relationship with resources are further discussed. It provides an important basis for resource exploration in this area. The main results obtained in this paper are as follows: (1) the horizontal and vertical gradients of gravity anomalies in the presence of various models are studied in this paper. The profile curve anomaly characteristics of oblique (Tilt) derivative and oblique (Tilt) derivative horizontal derivative are summarized. The error and limitation conditions of these four derivative methods in detecting model boundary are summarized. The validity of the method is verified by the Yishu fault segment with known geological characteristics. (2) gravity zoning of the study area is carried out on the Bouguer anomaly map, residual anomaly map and aeromagnetic anomaly map of northeast China; Combined with the basic geological background research data and previous achievements, the authors obtained the basic understanding of the zoning boundaries of anomalies in different plots and combined zones. Based on the gravity anomaly, the block volume effect is reflected on the basis of mathematical theory. From the geological objective point of view, the characteristics of the comprehensive effects of geological tectonic movements from ancient to present are revealed. (3) the gravity data of the study area are inversed by the methods of oblique (Tilt) derivative and oblique (Tilt) derivative horizontal derivative, and the structural framework of the concealed large fault in this area is obtained, and the primary interpretation of the first order fault is carried out. A preliminary comparison is made with the fracture results derived from gravity inference in the national mineral potential evaluation project. The inclined direction in the deep part of the Daxing'anling fault zone is preliminarily judged by intercepting the profile data. (4) by comparing and analyzing the distribution of large hidden faults and oil and gas resources and solid minerals, the basic characteristics of the relationship between large faults and distribution of oil, gas and solid minerals in Northeast China are obtained.
【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】：P631.1
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相關(guān)期刊論文 前2條
1 李朝林;劉穎鑫;孫慧梅;李慧杰;張作新;王力斌;;舒蘭—尚志斷裂帶地質(zhì)及地球物理場特征[J];吉林地質(zhì);2008年03期
2 李彥;賀生彩;;吉林金銀別地區(qū)地質(zhì)特征及金礦找礦方向[J];吉林地質(zhì);2014年02期
，本文編號：2378591
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