大南盘江地区泥盆—二叠系生物礁特征及其控制因素

DEVONIAN-PERMIAN BIOREEF CHARACTERISTICS AND ITS CONTROLLING FACTORS,DA'NANPANJIANG AREA

大南盘江地区泥盆系—二叠系生物礁广泛分布,纵向发育泥盆纪礁、石炭纪礁滩、二叠纪礁三套生物礁。按其发育的古地理位置可分为台内礁、台缘礁、斜坡礁、丘台礁四种类型。根据成礁作用不同,可分为造架生物、粘结生物、障积生物、附礁生物四种类型。不同时期、不同类型生物礁在造礁生物、成礁环境、礁体类型、礁体形态、发育的规模等方面均具有一定的差异性,其生长与发育受古地理、古环境、相对海平面升降、古隆起及造礁生物的兴衰多方面控制。

In Da'nanpanjiang area,Devonian-Permian bioreef is widely distributed.And longitudinally,there are three sets of bioreef,including Devonian reef,Carboniferous reef beach and Permian reef.They can be divided into four types based on their palaeogeographic position,such as reef within the platform,reef in the marginal platform,slope reef and mound table reef.In addition,they can be classified into another four types according to reef-forming effect,such as reef builder,bond and barrier-integrated organisms,and the ones adhering to the reef.Different bioreef in different stages is very distinctive in terms of reef-building organisms,reef-forming environment,reef body type and shape,and its growth scope.In addition,their growth is controlled by many factors of palaeogeography,palaeoenvironment,relative sea-level change,palaeo uplift,and reef builders.