峡东地区震旦系等时层序地层格架的建立

Establishment of the Sinian isochronous sequence stratigraphic framework in the eastern Yangtze Gorges area

摘要: 露头层序地层研究的两大任务是划分层序和建立等时层序地层格架.本文就宜昌峡东黄陵背斜的东、南和西翼3组震旦系剖面进行了层序地层学研究,共划分出14个层序(含天柱山段),并进行了空间上的追索和对比,建立了该地区的震旦系等时层序地层格架,为争取末元古代的建系研究和参与全球末前寒武系对比提供依据1～2.

Abstract: The authors undertook a sequence stratigraphic study on three Sinian sections on the eastern, western and southern limbs of the Huangling anticline in the eastern Yangtze Three Gorges area. Fourteen depositional sequences (including a sequence of the Camb