摘要
矿区位于兰坪－思茅中生代裂陷槽南端西缘，蚕洞河背斜东翼及倾伏端，西邻澜沧江大断裂带。矿床于５０年代发现，先后有不同部属的地质队进行过踏勘，７０年代作过菱铁矿普查评价，８０年代以来随着地质工作的不断深入，现除铁达中型之外，铜铅锌也具一定规模，已构成一个小型多金属矿床，且具很大的找矿前景。赋矿地层为三叠系中、上统，且以上统为主，矿体主要赋存于上三叠统大路边组（Ｔ３ｄ）中下部的碳酸盐岩中。笔者在总结成矿地质特征基础上，重点分析讨论控矿因素，提出矿床成因是受礁洼控制的典型的海相热水喷流沉积矿床。
AbstractThe ore-field is located in the west margin of the south end of Lanping-Simao Mesozoic fault depression trough, east limb and plung end of Candong River anticline, nar the Lancang River fault zone in the west.This ore deposit was discovered in 1950s and reconnoitered early or late by geological teams of different ministries. And the siderite prospecting was carried out here in 1970s. Because of the profound geological work since 1980s,it is confirmed, besides a Fe deposit in medium scale, there is a Cu, Pb, Zn polymetallic deposit in small scale with very good prospecting potential. The ore-bearing strata are Middle and Upper Triassic, malnly the Iater one. The ore body is mainly occurred in the carbonate rock of the middle-lower part of Upper Triassic Dalubian Formation(T3d). On the basis of a summary of the geological characteristics of metallogenesis, We stress the analysis and discussion of the deposit-controlling factors and point out that this ore deposit is a typical marine facies hot water effusive sedimentary deposit controlled by reef depression.
出处
《云南地质》
1998年第2期207-215,共9页
Yunnan Geology
