缅甸中央岛弧带地层对比和发育的控制因素
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摘要
缅甸中央岛弧带地层变形强烈、岩性复杂、横向对比困难,严重制约了油气勘探。利用地震、测井、录井及分析化验等资料识别地层界面,并结合古生物、锆石测年证据判别地层年代,首次建立了研究区的地层格架。缅甸中央岛弧带地层可划分为白垩系、古新统、始新统、中新统和上新统五套,描述了每套地层的识别特征并探讨了地层发育的控制因素,认为研究区地层发育受到构造作用、海平面变化、沉积物供给及火山活动等多种因素的影响。
Strata in Central Island Arc of Myanmar are strongly deformed with complex lithologies.Stratigraphic correlation is difficult,which has severely limited hydrocarbon exploration.Using seismic,well logging paleontologoca,and zircon geochronological data the stratigraphic framework of study area is established for the first time.Strata in Myanmar Central Island Arc are divided into five units that are respectively:Cretaceous,Paleocene,Eocene,Miocene,and Pliocene in age.These units are described in detail.On this basis,controlling factors of stratigraphic development indicating tectonics,sea level changes,sediment supply and volcanic activities,are discussed.
Strata in Central Island Arc of Myanmar are strongly deformed with complex lithologies.Stratigraphic correlation is difficult,which has severely limited hydrocarbon exploration.Using seismic,well logging paleontologoca,and zircon geochronological data the stratigraphic framework of study area is established for the first time.Strata in Myanmar Central Island Arc are divided into five units that are respectively:Cretaceous,Paleocene,Eocene,Miocene,and Pliocene in age.These units are described in detail.On this basis,controlling factors of stratigraphic development indicating tectonics,sea level changes,sediment supply and volcanic activities,are discussed.
引文
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