Application of new method of time-stratigraphic comparison of terrestrial red beds in southern slope of Dongying depression

Key words:  southem slope of Dongying depression  red beds  sequence stratigraphy  division method

Abstract:

TTie red IhhIs are commonly known as M the barren stratum" because of lacking paleontoLc^cal fossils. For the difficulty in the strata geologic age research and the shortage of stable rock electric signs，there are many difficulties in the isochronous correlation research. Based on palaeontology, logging, well losing and seismic, the strata feature, correlation theory of sequence stratigraphy and correlation method of the red beds were studied. Hie results show that the red beds take on the dichotomy clearly because of the lark of low stand systems tract sediment and the lake leveJ is controlled by seasonal flood. The difficulty of strati-graphic division for the red beds could be solved effectively ihrough dynamic integration of the theory of sequence stratigraphy of "Vail+Cross". A fine stratigraphic framework suitable for the study area can be established by the method of stratigraphy analysis, which is " iruuiro-lnterface constraint, internal-fine cycle division, controlled by multi-factor method".