什邡式磷块岩矿床的成矿条件与冲断推覆构造  

METALLOGENIC CONDITIONS AND THRUST DECKEN STRUCTURE OF SHIFANG PHOSPHORITE DEPOSITS

作　　者：黄富荣[1] 邓小林[1] 

机构地区：[1]中化地质矿山总局地质研究院,河北涿州072754

出　　处：《化工矿产地质》2011年第1期27-32,36,共7页Geology of Chemical Minerals

摘　　要：什邡式磷矿床产于松潘-甘孜造山带,受同沉积断块的控制,分布在六水闸推覆体周边,磷质来源于清平磷矿层和绵竹磷矿层,沉积环境为滞流海湾,古地貌是水下隆起,并在不断隆升中成矿。成矿后遭受冲断推覆运动的改造,形成大量柔流褶皱和阶梯断层。与沉降带磷块岩矿床地质特征有很大区别。Be controlled by sedimentary fault block and distributed around Liushuizha nappe,Shifang phosphorite deposits occur in the Songpan-Ganzi orogenic belt,with submarine upheaval,they sedimented in stagnant gulf.The phosphatic materials origined from Qingping and Miaozhu phosphorite ledge and formed a great deal of flow foldings and terrace faults after suffering nappe reformation,all of which are different from the characters of phosphorite deposit in depression area.

关 键 词：成矿条件 冲断推覆 磷块岩矿床 

分 类 号：P619.213[天文地球—矿床学]