【摘要】 <正> 层控铅锌矿床是世界上铅锌主要来源之一,占世界探明储量的绝大部份。产于碳酸盐岩系地层中的铅锌矿床研究较多;产于碎屑岩系地层中的铅锌矿床,尤其是砂岩中的铅锌矿床研究较少。目前我国已探明有大型和特大型的砂岩型铅锌矿床。本文拟就有关砂岩型铅锌矿床的几个问题进行探讨。由于水平有限,错误难免,请予批评指正。更多还原

【Abstract】 This paper, in terms of the geological feature, scale, time of formation and sedimentary environment of the ore-bearing rocks and so forth, approaches the possibility for searching Pb-Zn deposits of the sandstone-type in the strata of different ages, meanwhi1e, puts forward some common characteristics of them through correlating the geological features of the deposits and their metallogenetic modes.According to the solubulity of the ores and the nature of the transporting media, it is believed that the Pb-Zn deposits of sandstone-type were resulted from multiple processes of the surface water- ground-water-brine. This paper, on the basis of the distribution of the sandstone-type Pb-Zn deposits, suggests an ore-searching indicative mode as "zone(folded zone, down-warping zone, rift zone and deep fractue zone), basin (sedimentary basin), depression (local deep depressions in the sedimentary basin and depressions in the shallow-sea platform and platform basin), trench (underwater channels or gullies related to sea basin, lake basin and the depression)and deep fracture contact(refering to the spatially intercontacted fracture structure)."更多还原