摘要
在辽北1:5万地质填图中应用遥感技术提供超前地质信息,加强基础地质研究程度.根据遥感图象结合航磁资料,划分出以线性影象为主的太古宙变质上壳岩系,以环形影象为主的变质深成侵入体等影象地质单元,并解译出以细线纹为标志的韧性剪切带和片麻岩中面状构造的分布趋势.
Remote-sensing method was applied in 1: 50000 scale geological mapping in Archaean metamor-phic complex in Northern Liaoning province. By the reference of aeromagnetic information, it has provied advanced geologic information and higher efficiency to surface work. With the add of remote-sensing interpretation, we have achieved a higher mapping quality and research level.Archaean metamorphic complex can be subdivided into tow types of image-geologic units in image , one is metamorphic supercrustal rock unit in which colourhue, water system and landform appear in linear stretch, the other is metamorphic plutonic mass unit in which the image demonstrates a circular pattern. The inner circular structure which indicate plutonic genesis can be interpreted fairly well. The linear lamination belts which caused by anomalous micro-landform can be better interpreted as ductile shear zones or strongly developed gneissosity belts.From all above, we can see that remote-sensing interpretation has played an important role in mapping in middle-high degree metamorphic terrain and should not be neglected.
关键词
地质
遥感
解译
地质图
填图
remote-sensing geology, Archaean complex area, image-geologic unit
