CAJ | 학술논문

通过对大青山煤田内系统采样测试、综合分析等研究方法,分析了煤田内煤灰中Al2O3赋存分布和稀土元素地球化学特征,研究表明,煤田内煤灰中Al2O3明显富集,主要赋存在铝硅酸盐矿物中;通过"质心联接"的聚类分析方法,结合沉积环境和聚煤期岩相古地理分布特征分析认为,研究区Al2O3主要受北部"阴山古陆"物源区的控制,属同沉积作用成因;统计分析研究区内稀土元素地球化学特征表明富铝煤层主要形成于陆相沉积环境,富铝矿物形成于氧化环境;通过绘制研究区内的稀土元素分配模式图,与北缘阴山古陆不同时期花岗岩(前寒武纪、加里东海西期)和不同类型花岗岩(斜长、二长、钾长、细晶)的稀土元素分配模式进行比较,发现富铝矿物主要来自北部物源区,母岩类型为加里东海西期的斜长花岗岩、二长花岗岩、钾长花岗岩、细晶花岗岩.
통과대대청산매전내계통채양측시、종합분석등연구방법,분석료매전내매회중Al2O3부존분포화희토원소지구화학특정,연구표명,매전내매회중Al2O3명현부집,주요부존재려규산염광물중;통과"질심련접"적취류분석방법,결합침적배경화취매기암상고지리분포특정분석인위,연구구Al2O3주요수북부"음산고륙"물원구적공제,속동침적작용성인;통계분석연구구내희토원소지구화학특정표명부려매층주요형성우륙상침적배경,부려광물형성우양화배경;통과회제연구구내적희토원소분배모식도,여북연음산고륙불동시기화강암(전한무기、가리동해서기)화불동류형화강암(사장、이장、갑장、세정)적희토원소분배모식진행비교,발현부려광물주요래자북부물원구,모암류형위가리동해서기적사장화강암、이장화강암、갑장화강암、세정화강암.
On the basis of systematic sampling, testing and comprehensive analysis in Daqingshan coalfield, studied coal ash Al 2O3 oc-currence, distribution and REE geochemical characteristics. The study has shown that coal ash Al2O3 in the coal field is obviously en-riched mainly in alumino-silicate minerals. Through"barycenter linkage"clustering analysis, combined with sedimentary environment and coal accumulation stage lithofacies-paleogeographic distribution features analysis have considered that Al 2O3 in study area is main-ly controlled by the provenance"Yinshan old land"to the north, belongs to synsedimentary genesis. Statistical analysis of study area REE geochemical characteristics has shown that aluminum-rich coal seams were mainly formed in terrestrial sedimentary environment, aluminum minerals were formed in oxidizing environment. Through study area REE distribution model drafting, compared with differ-ent aged (pre-Cambrian, Caledonian and Hercynian), different typed (plagiogranite, adamellite, moyite, aplite granite) granite distribu-tion models have found that aluminum-rich minerals were from the provenance to the north, mother rocks have Caledonian and Hercyn-ian plagiogranite, adamellite, moyite and aplite granite.