摘要
晚二叠世,处于板内活动中后期的北山南带中段地区,发生规模宏大的左旋位移走滑断裂作用。花牛山—五峰山和黄尖丘—新场两地区形成正性的走滑隆升区,其相应中间地带则显示了负性拉分拗陷作用,发育了大奇山拉分盆地。走滑隆升地区走滑型剪切带发育,为剪切带型的金矿成矿带。拉分盆地以巨厚火山—磨拉石建造为特征,沉积环境为陆相—海相—海陆混合相。
Upper Permian, large scope strike-slip rift faulting of sinistral rotation displacement happied in Level area of Baishan South in intraplate middle, late active age during Upper Per-mian. Huanushan - Wufenshan and Huangjianqiu -Xinchang formed positive strike -slip up-warping region, middle belt shown negative down warping, developed Daqishan pull -apart basin. Strike - slip u warping region had well ?developed strike-slip type shear zone, it was a shear zone type mineralization belt of golden deposit. Pull -apart basin representative prod-uct was volcanic -molasse formation, depositional environment was continental faciesmarine facies -marine, continental mixed fades.
基金
国家自然科学基金资助项目(编号9487001-1)
