河南内乡县北岗水泥用石灰岩矿床地质特征及成因浅析

Geological Characteristics and Genesis of Beigang Cement Limestone Deposit in Neixiang County,Henan Province

河南省内乡县北岗水泥用石灰岩矿床赋存于上古生界下石炭统梁沟组地层中,矿体厚度受复式向斜构造在走向上由南东向北西呈逐渐增厚趋势,矿石化学成分特征为高钙、低镁。初步认为矿床成因类型属浅海相生物化学沉积成因矿床。

Beigang cement limestone deposit in Neixiang county, Henan province occurs in Lianggou formation of Lower Carboniferous of Late Paleozoic.The thickness of ore body is affected by compound syncline structure and denudation land, the trend is gradually thickened from southeast to northwest, the chemical composition of the ore is characterized by high calcium and low magnesium. Through analysis, it is preliminarily considered that the genetic type of the deposit belongs to a stable marginal platform slope sedimentary carbonate deposit of shallow marine biochemical sedimentary origin.