CAJ | 학술논문

为研究广东韶关市丹霞山砂岩蜂窝状洞穴及白斑成因，对世界自然遗产地丹霞山景区内玉女拦江洞中采集的6个砂岩蜂窝状洞穴样品，以及在鸭麻岩地区采集的4个白斑样品，进行XRF和ICP-MS元素地球化学分析及岩石薄片偏光显微镜鉴定。结果表明，发育蜂窝状洞穴的砂岩体与其基岩砂岩体的成分含量相近，岩体内部成分差异不是蜂窝状洞穴的成因。综合分析认为，丹霞山砂岩蜂窝状洞穴的产生是岩石的矿物组成及结构、洞穴所在的地形条件、气候因素和蜂窝状洞穴所形成的微气候共同作用的结果。对白斑的元素分析结果显示，发育白斑的砂岩在成岩过程中，红色基岩形成于氧化环境，而白斑形成于还原环境中，赤铁矿被还原形成白斑。
위연구엄동소관시단하산사암봉와상동혈급백반성인，대세계자연유산지단하산경구내옥녀란강동중채집적6개사암봉와상동혈양품，이급재압마암지구채집적4개백반양품，진행XRF화ICP-MS원소지구화학분석급암석박편편광현미경감정。결과표명，발육봉와상동혈적사암체여기기암사암체적성분함량상근，암체내부성분차이불시봉와상동혈적성인。종합분석인위，단하산사암봉와상동혈적산생시암석적광물조성급결구、동혈소재적지형조건、기후인소화봉와상동혈소형성적미기후공동작용적결과。대백반적원소분석결과현시，발육백반적사암재성암과정중，홍색기암형성우양화배경，이백반형성우환원배경중，적철광피환원형성백반。
Abundant typical sandstone morphologic shapes developed in Mt. Danxiashan. We collected six samples of sandstone honeycombs in Yunülanjiang Cave and four samples of white spots in Yamayan to do component analy-sis( XRF and ICP-MS)with the purpose of explaining their genesis. The results indicate that the component con-tents of samples in honeycombs and bedrock are similar so that there is no direct relationship between lithological differences and honeycomb’s formation. The comprehensive analysis reveals that honeycombs are the result of phys-ical weathering. And the rock structure,topography,climate and cavern microclimate are important influencing fac-tors in the formation process of honeycombs. In the discussion of sandstone white spot,reducing conditions prevail in the process and some minerals are dissolved. Reduction of Fe making the color change from red to white with wa-ter percolating through the rock,thereby forming a white spot on the surface.