CAJ | 학술논문

瓮福磷矿沉积的有利场所是潮下海湾浅滩环境，而不是潮坪。海湾的大小又控制着矿床的规模，海滩能量的差异影响着磷矿石的不同结构成因类型。矿石的结构，从凝胶-细砂屑与砂屑颗粒由细变粗；岩石的颜色由灰褐、黑色(多陆屑、富有机炭及黄铁矿)变为浅灰、灰白色；矿层中P2 O5含量随之渐增，而且CaO 含量变化与P2 O5含量变化同步，说明水动力条件由弱渐强，反映了沉积环境由潮汐作用为主的海湾环境。为此，陡山沱组以浅水碳酸盐优势岩相的地层条件是成磷的前提；温暖、干燥的古气候提供了有利于磷质的析出及沉积；适宜的海滩古地理环境提供了最佳的成矿场所；“黔中隆起”的古构造条件是磷矿的分布及富矿形成的最主要的控制因素。
옹복린광침적적유리장소시조하해만천탄배경，이불시조평。해만적대소우공제착광상적규모，해탄능량적차이영향착린광석적불동결구성인류형。광석적결구，종응효-세사설여사설과립유세변조；암석적안색유회갈、흑색(다륙설、부유궤탄급황철광)변위천회、회백색；광층중P2 O5함량수지점증，이차CaO 함량변화여P2 O5함량변화동보，설명수동력조건유약점강，반영료침적배경유조석작용위주적해만배경。위차，두산타조이천수탄산염우세암상적지층조건시성린적전제；온난、간조적고기후제공료유리우린질적석출급침적；괄의적해탄고지리배경제공료최가적성광장소；“검중륭기”적고구조조건시린광적분포급부광형성적최주요적공제인소。
The favorable location of sediment of Wengfu phosphorus deposit is subtidal bay shoal milieu in-stead of tidal flat.The size of bay controls the scale of deposit,and different beach energy results in different structural genesis types of phosphate ores.The structure of ores varies from coarse-grained to fine-grained gelatin-fine-grained-arene and arene,and the color of rocks varies from taupe and black (multi-terrigenous clastic,rich organic carbon and pyrite)to light gray and linen.The content of P2 O5 in ore bed increases ac-cordingly,and the change of CaO content is proportionate to that of P2 O5 content,and it suggests that hy-drodynamic condition becomes stronger,and it reflects that sedimentary environment turns into bay environ-ment dominated by tidal action.Hence,formation conditions of shallow-water carbonate dominance lithofa-cies in Doushantuo Formation is the prerequisite of phosphorus mineralization.Warm and dry palaeoclimate provides favorable conditions for precipitation and sediment of phosphorus,and suitable beach palaeogeo-graphic environment build the perfect locale for mineralization.The palaeotectonic condition of “uplift in middle Guizhou”is the most primary controlling factor in distribution of phosphorus deposits and formation of high-grade ores.