摘要
造礁生物演化经历了六个主要发展阶段,具有全球性演化规律特征,其盛衰变化在南方礁丘的时代分布上反映较为醒目。早泥盆世至晚泥盆世早期,为生物礁发育的首次鼎盛期,已发现的礁体达97个,而至今尚未发现晚泥盆世晚期(法门期)的生物礁;二叠纪是第二次鼎盛期,已发现该时期的礁丘达148个之多,生物特性明显,而至今也尚未发现早三叠世时期的礁体。中国南方这一礁丘时代分布特征恰好与F/F和T/P两次全球性巨大生物绝灭事件相吻合。因此在南方寻找生物礁型油气藏时,除了应当重视本区构造演化的控制作用外,还应极大地注意全球性生物演化规律的控制作用。
The evolution underwent six main stages, possessing the characteristics of global organic evolution regularity. The reflection of its prosperity and decline is striking on the age distribution charac- ters of the reefs. The first period of great prosperity in southern China was in the Early Devonian to the early phase of Late Devonian. 97 reefs in the period have been found, and no one in the later phase of Late Devonian (Famennian Stage) found up to now. The second period of that was the Permian. 148 reefs in the Permian have been found. They are distinct in organic characters. So far hasn't been found one reef in Early Triassic neither. Both of the times of no reef found coincide exactly with two great events of global organic extinction of F/F and T/P. So we should pay more attention to the domination of the global regu- larity of organic evolution on the development of reefs besides that of regional tectonic evolution as we look for reef-type oil & gas reserviors in southern China.
关键词
礁丘发育
震旦纪
生物演化
生物礁
生物绝灭事件
South China
Sinian
Paleozoic
Triassic
organic evolution
organic reef
control
factor
