吉林地质
吉林地質
길임지질
JILIN GEOLOGY
2014年
3期
1-4,12
,共5页
丑述一%薛继广%刘浩%潘超
醜述一%薛繼廣%劉浩%潘超
축술일%설계엄%류호%반초
长白山%火山岩%双峰式%板块俯冲%地幔柱
長白山%火山巖%雙峰式%闆塊俯遲%地幔柱
장백산%화산암%쌍봉식%판괴부충%지만주
Changbai Mountain%volcanic rocks%double-peaking%plate subduction%mantle plume
长白山火山岩区位于滨太平洋构造域西侧,东北大陆裂谷系的东部,北东向断裂较为发育,有敦密断裂、鸭绿江断裂、伊通-依兰断裂等超壳断裂,这些断裂为后期岩浆喷溢提供了通道,也基本控制了火山岩的展布方向。该区新生代以来的火山活动可分为甑峰山期、奶头山期、平顶村期、军舰山期、广坪期、白头山期和天文峰期7个期次,通过对该区的深部构造研究,结合板块运动理论综合分析,笔者将该区火山岩的形成分为了6个阶段,提出了长白山地区火山活动的成因模式。
長白山火山巖區位于濱太平洋構造域西側,東北大陸裂穀繫的東部,北東嚮斷裂較為髮育,有敦密斷裂、鴨綠江斷裂、伊通-依蘭斷裂等超殼斷裂,這些斷裂為後期巖漿噴溢提供瞭通道,也基本控製瞭火山巖的展佈方嚮。該區新生代以來的火山活動可分為甑峰山期、奶頭山期、平頂村期、軍艦山期、廣坪期、白頭山期和天文峰期7箇期次,通過對該區的深部構造研究,結閤闆塊運動理論綜閤分析,筆者將該區火山巖的形成分為瞭6箇階段,提齣瞭長白山地區火山活動的成因模式。
장백산화산암구위우빈태평양구조역서측,동북대륙렬곡계적동부,북동향단렬교위발육,유돈밀단렬、압록강단렬、이통-의란단렬등초각단렬,저사단렬위후기암장분일제공료통도,야기본공제료화산암적전포방향。해구신생대이래적화산활동가분위증봉산기、내두산기、평정촌기、군함산기、엄평기、백두산기화천문봉기7개기차,통과대해구적심부구조연구,결합판괴운동이론종합분석,필자장해구화산암적형성분위료6개계단,제출료장백산지구화산활동적성인모식。
The volcanic rock area of Changbai Mountain was located in the west shore of the Paciifc tectonic domain, the east of the northeast continental rift system. The NE fracture developed. It includes Dunmi Fault Zone, Yalu River Fault Zone, Yitong-Yilan Fault Zone etc, which provide channels for magmatic eruption and control spreading direction of volcanic rock. The Cenozoic volcano activity can be divided into 7 stages: Zengfeng mountain, Naitou mountain, Pingdingcun, Junjian mountain, Guangping, Baitou mountain and Tianwenfeng stage. Combining with theory of plate tectonics, the authors analyze the area’s deep structure, summarize six stage of the area’s Volcano rock formation, put forward genetic model of volcanic activity in Changbai Mountain area.