CAJ | 학술논문

以独山白虎坡黔南坳陷泥盆-石炭系界线剖面为主要研究对象，开展了界线附近泥盆系者王组、革老河组和石炭系汤巴沟组层序地层的划分和碳氧同位素异常对比研究，揭示其海平面变化特征，根据台地相区三级层序的发育特点，将黔南坳陷泥盆-石炭系界线附近者王组-汤粑沟组自下而上划分为4个三级层序，分别命名为SQ1-SQ4，泥盆-石炭系界线位于SQ1与SQ2之间。碳稳定同位素研究表明，在杜内阶中期，随着海退事件的发生，δ13 C值发生明显的正偏移，偏移量达3.96‰，这次明显的碳同位素正偏移在黔南地区均可得到很好的对比，与华南地区海平面下降一致。
이독산백호파검남요함니분-석탄계계선부면위주요연구대상，개전료계선부근니분계자왕조、혁로하조화석탄계탕파구조층서지층적화분화탄양동위소이상대비연구，게시기해평면변화특정，근거태지상구삼급층서적발육특점，장검남요함니분-석탄계계선부근자왕조-탕파구조자하이상화분위4개삼급층서，분별명명위SQ1-SQ4，니분-석탄계계선위우SQ1여SQ2지간。탄은정동위소연구표명，재두내계중기，수착해퇴사건적발생，δ13 C치발생명현적정편이，편이량체3.96‰，저차명현적탄동위소정편이재검남지구균가득도흔호적대비，여화남지구해평면하강일치。
Based on the study of the Baihupou section of the Devonian -Carboniferous boundary in southern Guizhou depression,the sequence classification and carbon isotope excursion are carried out near the boundary of devonian Zhewang formation,Gelaohe formation and carboniferous Tangbagou formation.This study reveals the characters of sea-level changes.According to 3 rd grade sequence development characteristics in platform fa-cies,the boundaries of Devonian-Carboniferous (from zhewang formation to tangbagou formation)strata are divided into four 3rd grade sequences (SQ1 -4).With regressive occurings in the middle of Tournaisian,car-bon and oxygen isotope shows positive δ13 C shift of 3.96‰.This positive shift ofδ13 C can be correlated with carbon isotope excursions in other areas of southern Guizhou.It is consistent with the sea-level fall in southern China.