扬子地区磷矿成矿规律

MINERALIZED REGULARITY OF PHOSPHORITE IN THE YANGTZE AREA

扬子地区是我国最为重要的磷矿分布区,占全国资源总量的80%以上。扬子地区主要的含磷层位是晚震旦世的陡山沱阶和早寒武世梅树村阶。扬子地区在晚震旦世的陡山沱期和早寒武世梅树村期具备极佳的形成磷矿的古构造、古地理、古气候条件,磷质来源丰富,在一定的物理、化学和生物作用下,形成了大型磷矿带和磷矿聚集区。滇东北寻甸—东川—会泽一带、川西南马边—雷波—会东一带、鄂西神农架和黄陵背斜西部是寻找大型磷矿和富磷矿的有利地区。

The Yangtze phosphorite distribution area ,where 80% phosphorite resources in countrywide ,is the most important area for phosphorite around china territory, the Doushantuo stage of later and Meishucunian Stage of early mostly the phosphorite beating bed, in the later and early period, the conditions of ancient tectonic and palaeoclimate, abount of phosphorious substances, which is best for the forming of phosphorite ,therefore, large phosphorite belts and phosphorite congregated area formed under definite physical , chemical and biologyical movements, other areas such as Xundian-Dongchuan- Huize in northeast of Yunan ,Mabian-Leibo-Huidong in southwest of Sichuan ,Shennongjia in west Hubei and west of Huangling Anticline as well as the favorible areas for the prospecting of large scale phosphorite and rich phosphorite.