CAJ | 학술논문

贵州独山泥盆系是典型的浅海碳酸盐岩台地相沉积。独山鸡窝寨村中泥盆统鸡窝寨组下部发育由障积岩、粘结岩、骨架岩和生物砾灰岩等所构成的小型丘状生物礁，造礁生物主要为层孔虫和珊瑚。礁体内发育小型褶皱和小型断层等变形构造，褶皱以平卧褶皱和紧密褶皱为主，且转折端多以尖棱状和圆弧状为主，而小型断层则主要为小型的逆断层和分布于褶皱转折端的小型张性断层。礁体内的变形构造特征以及正常沉积的钙质泥岩基底和灰岩盖层共生表明，该生物礁形成过程中曾发生过可能与中泥盆世吉维特期黔桂海火山活动相关的同生变形滑塌，且可能与吉维特期黔贵海处较为频繁的火山活动相关。
귀주독산니분계시전형적천해탄산염암태지상침적。독산계와채촌중니분통계와채조하부발육유장적암、점결암、골가암화생물력회암등소구성적소형구상생물초，조초생물주요위층공충화산호。초체내발육소형습추화소형단층등변형구조，습추이평와습추화긴밀습추위주，차전절단다이첨릉상화원호상위주，이소형단층칙주요위소형적역단층화분포우습추전절단적소형장성단층。초체내적변형구조특정이급정상침적적개질니암기저화회암개층공생표명，해생물초형성과정중증발생과가능여중니분세길유특기검계해화산활동상관적동생변형활탑，차가능여길유특기검귀해처교위빈번적화산활동상관。
The Dushan Devonian section in south Guizhou,which belongs to carbonate platform facies,is one of typical Devonian sections in China.A small knoll reef built by stromatoporoids and corals is found in the lower Jiwozhai (Chiwochai)Formation of the Middle Devonian at Jiwozhai village,Dushan.The small knoll reef is composed of bafflestones,bindstones,framestones,and conglomeratic limestones.In addition,some deformed structures,including small-sized folds and faults are found in the reef.The small-sized folds are mainly recum-bent and compact folds with angular and arcual hinge zone.The small-sized faults are mainly dominated by reverse fault together with some tensile faults near the hinge zone of the small-size fold.Nevertheless,the reef base and cap are normal sedimentary calcareous mudstone and limestone,respectively,no deformed structures. The characteristics of the deformed structures in the small knoll reef and the normal reef base and cap imply that the reef slumped between post-deposition and pre-diagenesis.The contemporaneous slump structure is possibly related with volcanic activity in the Guangxi-Guizhou Sea during the Givetian of Middle Devonian.