灰泥岩

西秦岭南亚带硅灰泥岩型金矿床的成矿时代研究

Study on the metallogenetic era of the silicated mudstone type gold deposit in South Subzone of west Qinling

兴二段凝灰泥岩或泥岩中有6种黏土组合，在凝灰岩、凝灰质砂岩和砾岩中有7种黏土组合。

The tuffaceous mudstone or mudstone in Member 2 has six types of clay complex and the tuff , tuffaceous sandstone and conglomerate have seven types of complex .

本文通过对西秦岭南亚带硅灰泥岩型金矿床的分析研究，首次提出金矿床的热液隐爆成因，并建立了相应的成矿模式。

Through analysis of the gold deposits of siliceous mudstone type in south subzone of western Qinling , this paper firstly pointed out the genesis of concealed hydrothermal eruption and established their metallogenic model .

而塔北还处于台地-斜坡环境，中、上奥陶统较全，台缘相灰泥丘生油岩分布广，中奥陶统礁滩相层序不整合面岩溶储层发育。

Tabei area was then still in a platform-slope environment , Upper and Middle Ordovician were relatively complete , lime-mud mound source rocks of platform edge facies were widely distributed , and karst reservoirs on the unconformable surface in the Middle Ordovician sequence of reef flat facies were well developed .