南海笔架南盆地地震反射波特征及地震层序地质时代探讨  

CHARACTERISTICS OF SEISMIC REFLECTION AND GEOLOGIC AGES OF SEISMIC SEQUENCES OF BIJIA'NAN BASIN,SOUTH CHINA SEA

作　　者：高红芳[1] 白志琳[1] 

机构地区：[1]广州海洋地质调查局第二海洋地质调查大队,广州510760

出　　处：《地学前缘》2000年第3期239-246,共8页Earth Science Frontiers

基　　金："我国专属经济区和大陆架勘测"专项(HY126-03-11)

摘　　要：运用地震地层学方法 ,在笔架南盆地识别出 5个特征明显的反射界面 ,划分了 3个超层序、5个地震层序 ,并探讨各地震层序的地质时代。通过地震相沉积相推测分析 ,认为地震层序E主要发育火山碎屑岩相 ;地震层序D主要发育半深海偏泥相 ;地震层序C主要发育半深海泥岩相 ;地震层序B主要发育半深海—深海泥岩相和浊积偏砂相 ;地震层序A主要发育深海泥岩相。From seismic stratigraphy, the authors identify five seismic reflection interfaces and differentiate five seismic sequences and three supersequences. Geologic age of seismic sequences is confined to a certain degree. Seismic facies and sedimentary facies are analyzed. There developed pyroclastic rock in the Late Oligocene in the basin, bathyal mudstone and a little sandstone in the Early Miocene, bathyal mudstone in the Middle Micocene and the Late Miocene, bathyal\|deep sea mudstone and turbidite in the Pliocene, and deep sea mudstone, deltaic mudstone and turbidite in the Quaternary.

关 键 词：笔架南盆地 超层序 地震层序 地质时代 地震相 沉积相 

分 类 号：P539.1[天文地球—古生物学与地层学] P631.4[天文地球—地质学]