鄂西陡山沱组磷块岩矿层划分对比及成矿规律

鄂西陡山沱组磷块岩可以划分为三个工业矿层Ｐｈ＿１，Ｐｈ＿２，Ｐｈ＿３和一个含磷层Ｐｈ＿４，具有全区对比意义的有Ｐｈ＿１，Ｐｈ＿２和Ｐｈ＿４。荆襄矿区工业矿层为Ｐｈ＿１，Ｐｈ＿２和Ｐｈ＿３；宜昌和兴神矿区工业矿层为Ｐｈ＿１和Ｐｈ＿２，缺失Ｐｈ＿３。各矿区磷矿层的分布随海侵方向由南向北出现明显而有规律地迁移，这一时空变化规律为恢复古地理及成矿预测提供了依据。

DIVISION,CORRELATION AND MINEROGENETIG RULE OF THE PHOSPHORUS MINERAL BEDS OF DOUSHANTUO FORMATION IN WESTERN HUBEI

Phosphorite can be divided into three industrial mineral beds, i.e. Ph_1,Ph_2,Ph_3,and phosphorus bearing bed Ph_4 in Doushantuo Formation of Western Hubei. Ph_1, Ph_2 and Ph_4 are provided as the significant comparable phosphorus mineral beds over all of area. The industrial mineral beds are Ph_1,Ph_2,and Ph_3 in Jingxiang mineral district,and Ph_1 and Ph_2 in Yichang and Xingshen,without Ph_3.Distribution of the phosphorus mineral bed in each mineral district offers as the obvious and regular movement along the ingressive direction from south to north,This vari-ation pattern on time and in space provides the theis for palaeogeographic recovery and mineroge-netic prognosis.