CAJ | 학술논문

近年来的研究发现,夕卡岩型矿床不仅仅发生在中酸性岩体与碳酸盐岩类的接触带上,在基性岩体的接触带上或者远离接触带的地层中也可以形成夕卡岩,成矿围岩也突破了碳酸盐岩类岩石的限制,在火山沉积凝灰岩等较活泼的火山沉积岩中也可以形成夕卡岩和夕卡岩型矿床;这类型的矿床大多数与陆壳俯冲带中的岩浆弧有关,其成矿温度以中低温为主,成矿深度从浅表成到中深成的环境为主,深成环境不利于夕卡岩的形成;夕卡岩型矿床的成矿物质以深源为主,部分可能有地壳物质的混入;而成矿流体的不同演化阶段表现出一定的差异,早期以岩浆水占优势为特征,并向天水方向演化,晚期主要以天水占优势为特征.
근년래적연구발현,석잡암형광상불부부발생재중산성암체여탄산염암류적접촉대상,재기성암체적접촉대상혹자원리접촉대적지층중야가이형성석잡암,성광위암야돌파료탄산염암류암석적한제,재화산침적응회암등교활발적화산침적암중야가이형성석잡암화석잡암형광상;저류형적광상대다수여륙각부충대중적암장호유관,기성광온도이중저온위주,성광심도종천표성도중심성적배경위주,심성배경불리우석잡암적형성;석잡암형광상적성광물질이심원위주,부분가능유지각물질적혼입;이성광류체적불동연화계단표현출일정적차이,조기이암장수점우세위특정,병향천수방향연화,만기주요이천수점우세위특정.
Recent study shows that the skarn deposit not only occurs in the contact between the intermediate-acidic intrusion and carbonate rocks but also in the contact of the basic intrusion or in the distal strata; not only hosted by the carbonate rocks but also by the active volcanic sedimentary rocks, such as the volcanic sedimentary tuff. The vast majority of skarn deposits are related to magmatic arcs in the subduction zone beneath the continental crust with the mesothermal to epithermal ore-forming temperature and the shallow to medium ore-forming depth. The abyssal environment is not favorable for the formation of skarn. Ore materials of the skarn deposit mainly come from deep source with partial crust materials involved. The ore fluid shows certain difference for different evolution stages. The early stage is with magma water preference and the later stage with meteoric water preference.