CAJ | 학술논문

在相同温度、压力（25℃，101325 kPa）条件下，通过对不同淡水成岩体系下长石溶蚀的对比实验来探讨大气水-砂岩的相互作用，实验证实了大气水对铝硅酸盐矿物确实存在淋滤作用，可以形成次生溶孔。该实验分别模拟了含泥开放体系、无泥开放体系和无泥封闭体系等3种不同成岩体系下的天然淡水对长石的溶蚀。反应后检测溶液中的Al3＋，Si4＋，Ca2＋，K＋，HCO3-等离子浓度的变化及不同体系下的钾长石和石英颗粒的扫描电镜（SEM）观察结果表明：长石在3种体系内均有不同程度的溶蚀，并且溶蚀的程度表现为，含泥开放体系＞无泥开放体系＞无泥封闭体系。无泥开放体系和无泥封闭体系下长石发生溶蚀的同时，也观察到石英的微溶蚀。在这3种成岩体系下，长石溶蚀程度与有机质含量、pH值有相关性，在开放体系中长石溶蚀较封闭体系更加明显。
재상동온도、압력（25℃，101325 kPa）조건하，통과대불동담수성암체계하장석용식적대비실험래탐토대기수-사암적상호작용，실험증실료대기수대려규산염광물학실존재림려작용，가이형성차생용공。해실험분별모의료함니개방체계、무니개방체계화무니봉폐체계등3충불동성암체계하적천연담수대장석적용식。반응후검측용액중적Al3＋，Si4＋，Ca2＋，K＋，HCO3-등리자농도적변화급불동체계하적갑장석화석영과립적소묘전경（SEM）관찰결과표명：장석재3충체계내균유불동정도적용식，병차용식적정도표현위，함니개방체계＞무니개방체계＞무니봉폐체계。무니개방체계화무니봉폐체계하장석발생용식적동시，야관찰도석영적미용식。재저3충성암체계하，장석용식정도여유궤질함량、pH치유상관성，재개방체계중장석용식교봉폐체계경가명현。
In the same conditions of temperature and pressure(25 ℃,101,325 kPa),the interaction of at-mospheric water-sandstone by comparative experiment of feldspar dissolution under different systems is explored in this paper,and it is confirmed that atmospheric water can eluviate aluminosilicate minerals.Feldspar dissolu-tion by natural fresh water is simulated by comparative experiments among open system with sludge,open system without sludge and closed system without sludge.After the reaction,the change in the concentrations of Al3+, Si4+,Ca2+,K+and HCO3-ions in solution and scanning electron microscopy (SEM)observation showed that feldspar in the three systems have different levels of dissolution.Dissolution of different degree is open system with sludge>open system without sludge>closed system without sludge.Not only feldspar dissolution but also the quartz micro-dissolution phenomena are observed in open system without sludge and closed system without sludge.Degree of feldspar dissolution has relation with organic matter content and pH value.The phenomenon of feldspar dissolution in open system is more obvious than in the closed system.