| 得尔布干成矿区黑山头以北地区重、磁、遥构造解译 |
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| 引用本文： | 武广,权恒,张炯飞,祝洪臣.得尔布干成矿区黑山头以北地区重、磁、遥构造解译[J].地质与资源,2002,11(1):53-58. |
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| 作者姓名： | 武广 权恒 张炯飞 祝洪臣 |
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| 作者单位： | 1. 沈阳地质矿产研究所, 辽宁 沈阳 110033;2. 吉林大学 地球科学学院, 吉林 长春 130065 |
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| 基金项目： | 原地矿部“得尔布干成矿区(北片)有色、贵金属成矿与综合信息靶区预测”项目(编号95-02-008)资助. |
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| 摘 要： | 得尔布干成矿区黑山头以北地区为森林-沼泽景观区，岩石露头极少，交通十分不便.因此，对该区的区域性重、磁、遥解译显得十分必要，可为地质、矿产调查提供重要信息.重、磁、遥解译认为，较发育的线性构造有NE、NW及NNE、E-W、S-N向等.在上黑龙江拗陷区及额尔古纳隆起区，线性构造主要为NE与NW向，并构成菱形格状构造.区内NE、NW及S-N向裂隙与控矿关系密切.磁、遥解译的环形构造常常是中生代火山-侵入中心，是成矿的重要热源或热液源.
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| 关 键 词： | 得尔布干 重力 航磁 遥感 线性构造 环形构造 |
| 文章编号： | 1671-1947(2002)01-0053-07 |
| 收稿时间： | 2001-06-28 |
| 修稿时间： | 2001年6月28日 |
STRUCTURAL INTERPRETATION BY GRAVITY, MAGNETIC FORCE AND REMOTE SENSING ON THE NORTH OF HEISHANTOU IN DERBUGAN METALLOGENIC PROVINCE |
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| WU Guang ,QUAN Heng ,ZHANG Jiong-fei ,ZHU Hong-chen.STRUCTURAL INTERPRETATION BY GRAVITY, MAGNETIC FORCE AND REMOTE SENSING ON THE NORTH OF HEISHANTOU IN DERBUGAN METALLOGENIC PROVINCE[J].Geology and Resources,2002,11(1):53-58. |
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| Authors: | WU Guang QUAN Heng ZHANG Jiong-fei ZHU Hong-chen |
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| Institution: | WU Guang 1,2,QUAN Heng 1,ZHANG Jiong-fei 1,ZHU Hong-chen 1 |
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| Abstract: | Derbugan metallogenic province(northern part)falls into forest-marsh area,with a great potential of non-ferrous and precious metallic resou rces.Therefore it will provide important information for resources ass esment to have a comprehensive interpretation of th e regional gravity,magnetic force a nd remote sensing in the Derbugan metallogenic province(northern part).In this area the gravity contour of -50mGa is generally equivalent to the boundary between Upper Heilongjiang depression meta llogenic subprovince and Ergun dome metallogenic province.The maximum value of the former is -20mGa,and the minimum value of the latter is -80mGa.The dep th difference for the Moho discon-tinuity between them can reach 5km.T he NE-and NW-trending linear structures interpreted by gravity form a lozenge-shaped structure,which is closely related to the ore-controll ing structure.Faults,volcanic rock zones and vol-canic apparatuses are shown clearly at the aeromagnetic anomaly(△T)map.Faults or volcanic rock zones ap pear to be linear structures.The volcanic apparatuses appear mostly as isolated p ositive or negatvie anomalies.The v olcanic dome structures are in circular and round ed spot anomalous groups.The NNE-to-NE-trending fracture is compresso-shear,while the NW-trending fracture is te nsional.Both of them have a great effection on ore-controlling and ore-h ost.There is a good consistency and compl ementarity between the linear structures interpreted by remote sensing and those by gravity and magnetic force.Thus the interpretation of the fractures is reliable.The circular structures inter-preted by remote sensing can be class ified into two parts:one is the volcanic apparatuses or the dome structur es of volcanic groups,which are commonly the mineralizing centers of volcani c hydrothermal deposits;the other i s J 3 -K 1 intrusive rock structures,which co ntrol the distribution of porphyry Cu deposits or intrusive complex Au deposits.In this area,the comprehensive interpreta tion of gravity,magnetic force and r emote sensing is for the first time.So it is sig-nificant for the correct understand ing of the fundamental geology in the area. |
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| Keywords: | Derbugan gravity aeromagnetic an omaly remote sensing linear structrue circular structure |
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