CAJ | 학술논문

黔中—渝南沉积型铝土矿的区域成矿模式概括如下：志留纪末的广西运动和泥盆纪末的紫云运动等，可能都是在峨眉地幔柱演化的壳幔相互作用阶段，因地幔柱向地壳大量输送物质和辐射能量，从而引发的地壳升降运动，在此期间，全区大面积抬升，形成长期隆起区；泥盆纪末准平原化；早石炭世岩关期气候湿热，暴露地表的早古生代岩石全面红土化、钙红土化，形成的含三水铝石红土风化壳物质，为沉积型铝土矿提供了物源。修文及息烽—遵义沉积区，于早石炭世大塘期早—中期沉积了铝土矿含矿岩系—九架炉组。绥阳—正安—道真沉积区，在晚石炭世的黄龙组石灰岩沉积并钙红土化之后，于马平期沉积了铝土矿含矿岩系的大竹园组。3个沉积区的铝土矿含矿岩系，都是在以陆相为主的环境中沉积形成的。在成岩阶段，铝土矿中的三水铝石逐渐变质为硬水铝石。由于各沉积区形成含三水铝石红土风化壳的母岩不同，由此沉积而成的铝土矿及其含矿岩系，在化学成分和矿物成分上也就有所差异。
검중—투남침적형려토광적구역성광모식개괄여하：지류기말적엄서운동화니분기말적자운운동등，가능도시재아미지만주연화적각만상호작용계단，인지만주향지각대량수송물질화복사능량，종이인발적지각승강운동，재차기간，전구대면적태승，형성장기륭기구；니분기말준평원화；조석탄세암관기기후습열，폭로지표적조고생대암석전면홍토화、개홍토화，형성적함삼수려석홍토풍화각물질，위침적형려토광제공료물원。수문급식봉—준의침적구，우조석탄세대당기조—중기침적료려토광함광암계—구가로조。수양—정안—도진침적구，재만석탄세적황룡조석회암침적병개홍토화지후，우마평기침적료려토광함광암계적대죽완조。3개침적구적려토광함광암계，도시재이륙상위주적배경중침적형성적。재성암계단，려토광중적삼수려석축점변질위경수려석。유우각침적구형성함삼수려석홍토풍화각적모암불동，유차침적이성적려토광급기함광암계，재화학성분화광물성분상야취유소차이。
The metallogenic model and prospecting criteria of sedimentary bauxite deposits in Central Guizhou-South Chongqing region are summarized as follows:Guangxi movement took place at the end of the Silunian and Ziyun movement that occurred at the last stage of the Devonian period, which might both have been in the crust-mantle interaction phase of the E’mei mantle plume evolution. The transportation of a large amount of materials and radiation energy from the mantle plume to the crust led to the rise-and-fall movement of the earth’s crust. During this period, large area of the region was uplifted, leading to the formation of the long-term uplifted area. At the end of the Devonian, the pediplanation occured. In the Early Carboniferous Yanguanian period, the climate was humid and rainy. Exposed surface rock in the Lower Paleozoic experienced laterization and calc-laterization. Laterite weathering crust with gibbsite provided sources for the sedimentary bauxite. In Xiuwen and Xifeng-Zunyi sedimentary areas, the bauxite-bearing rock series of Jiujialu Formation formed at the Early Carboniferous Datang Stage. Suiyang-Zheng’an-Daozhen sedimentary area deposited bauxite ore-bearing rock series of the Dazhuyuan Formation in the Maping period which, after the formation of the limestone of the Late Carboniferous Huanglong Formation, generated calc?laterization. As the deposition region formed different parent rocks containing gibbsite-laterite weathering crust, the deposited bauxite ore-bearing rock series have different chemical and mineral compositions.