吉林地质
吉林地質
길임지질
JILIN GEOLOGY
2014年
3期
50-55
,共6页
刘先权%高明珠%韩雪%车海龙%路猛%张庆连
劉先權%高明珠%韓雪%車海龍%路猛%張慶連
류선권%고명주%한설%차해룡%로맹%장경련
四方山铁矿%表壳岩%变质变形%背斜%向斜%叠加褶皱
四方山鐵礦%錶殼巖%變質變形%揹斜%嚮斜%疊加褶皺
사방산철광%표각암%변질변형%배사%향사%첩가습추
Sifangshan iron%supracrustal rocks%metamorphism and deformation%anticline syncline%superimposed folds
四方山铁矿经历了三期变形。第一期，当太古宙表壳岩形成后，来自东西向挤压作用，地层和矿体（S0）形成近南北向紧密褶皱构造。第二期，来自北西-南东方向挤压作用，使已经变形地层和矿体（S1）又一次变形，形成走向北东-南西叠加褶皱构造，这一期为四方山铁矿主期构造。第三期，来自北-西向和南东向不对称推力作用，使已经历二次变形地层、矿层均形成了S形，使S2又一次变形。
四方山鐵礦經歷瞭三期變形。第一期，噹太古宙錶殼巖形成後，來自東西嚮擠壓作用，地層和礦體（S0）形成近南北嚮緊密褶皺構造。第二期，來自北西-南東方嚮擠壓作用，使已經變形地層和礦體（S1）又一次變形，形成走嚮北東-南西疊加褶皺構造，這一期為四方山鐵礦主期構造。第三期，來自北-西嚮和南東嚮不對稱推力作用，使已經歷二次變形地層、礦層均形成瞭S形，使S2又一次變形。
사방산철광경력료삼기변형。제일기，당태고주표각암형성후，래자동서향제압작용，지층화광체（S0）형성근남북향긴밀습추구조。제이기，래자북서-남동방향제압작용，사이경변형지층화광체（S1）우일차변형，형성주향북동-남서첩가습추구조，저일기위사방산철광주기구조。제삼기，래자북-서향화남동향불대칭추력작용，사이경력이차변형지층、광층균형성료S형，사S2우일차변형。
Sifangshan iron ore had experienced three phases of deformation. The first period, the strata and ore bodies (S0) occurred near South-North tight folds by pressed from E-W extrusion effect, after the formation of Archean supracrustal rocks, The second stage, deformed the strata and ore bodies(S1) were deformed again , from the North West-South East direction compression, this period was Sifangshan iron main structure. The third stage , the strata and ore bodies which had experienced twice deformation formed an S shape, due to the asymmetric thrust from the North-West and South East direction , so that S2 deformed. once again.
