Understandings of the continental sequence stratigraphy——An example from 1∶50000 regional survey of Minhe basin,Gansu Province
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摘要: 陆相层序地层、沉积作用与海相的存在很大差异。层序地层学研究方法在陆相盆地具体应用中不应盲目照搬,应在借鉴海相层序地层学基本概念、基本理论的基础上,因地制宜,不断探索,真正总结出一套适合陆相层序地层学的概念与模式。准层序、准层序组的应用,是根据陆相盆地层序和充填作用的发育特点应运而生的。准层序本身反映了事件沉积作用,具有高分辨率,可以在纵向上进行时间层序划分,还可在横向上把无序的地层有机地联系起来。Abstract: There exists great difference between continental and marine sequence stratigraphy, between continental and marine sedimentation. A new set of concepts and models should be created to adapt to the continental sequence stratigraphy on the basis of the basic concepts and theories of marine sequence stratigraphy by means of exploring continuously, rather than by copying blindly, in the practical application of sequence stratigraphy. The concepts of quasi sequence and quasi sequence group were produced and used naturally, according to the developing features of the sequence of continental basin and filling in it. The quasi sequence itself shows event deposit and high resolution, which enable it possible that not only could temporal sequences be classified, but also the disordered strata could be connected spatially.
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Keywords:
- continental basin /
- quasi sequence group /
- Minhe basin /
- lower Cretaceous
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