CAJ | 학술논문

川西盐源地区马丝缧和干沟两个碳酸岩杂岩体位于盐源-丽江推覆构造带的茶铺子-巴折脆-韧性断裂带内。根据两个杂岩体的地质分布、产状、岩石矿物共生组合、围岩蚀变类型等特征，确认其具有岩浆侵入体的典型特征，非前人划分的变质沉积碳酸盐岩。这两个碳酸岩杂岩体与冕宁-德昌稀土成矿带的其他碳酸岩-碱性岩杂岩体有类似的特征。在茶铺子-巴折一带也发现了明显的多金属、稀土、铀等矿化。这一发现为盐源-丽江推覆构造带的大地构造演化和区域成矿系统研究提供了重要的资料，为寻找类似于牦牛坪的稀土等矿床提供了重要线索。
천서염원지구마사류화간구량개탄산암잡암체위우염원-려강추복구조대적다포자-파절취-인성단렬대내。근거량개잡암체적지질분포、산상、암석광물공생조합、위암식변류형등특정，학인기구유암장침입체적전형특정，비전인화분적변질침적탄산염암。저량개탄산암잡암체여면저-덕창희토성광대적기타탄산암-감성암잡암체유유사적특정。재다포자-파절일대야발현료명현적다금속、희토、유등광화。저일발현위염원-려강추복구조대적대지구조연화화구역성광계통연구제공료중요적자료，위심조유사우모우평적희토등광상제공료중요선색。
The Masilei and Gangou carbonatite intrusive complexes were discovered in the Yanyuan area of western Sichuan based on geological and mineralogical investigations. Tectonically, the two complexes are located in the Chapuzi-Bazhe brittle-ductile fault of the Yanyuan-Lijiang Nappe Belt. The carbonatite complexes are veins in shape without fossil, and intruded the wall rocks. The rocks are mainly composed of calcite, plagioclase, rutile and exhibit magmatic crystallization structure. In addition, lamprophyre and diabase dykes occurring along the fault belts are also found in the adjacent area. The distribution, occurrence, rock association, mineral paragenesis and wall-rock alteration of the two complexes, argue that they are igneous carbonatite intrusives rather than the metamorphic sedimentary carbonate rocks previously suggested. Both of them are similar to the other carbonatite-alkaline igneous complexes along the Mianning-Dechang Rare Earth Element (REEs) Metallogenic Belt. The polymetallic, rare earth, uranium mineralization is also found in the Chapuzi-Bazhe Zone. Therefore, the discovery of the two carbonatite intrusive complexes provided new evidence for the tectonic evolution and regional metallogenic system along the Yanyuan-Lijiang Nappe Belt, and new clue for the prospecting of the Maoniupingt-Type Deposit.