ON THE RELATIONSHIP BETWEEN SEQUENCE STRATIGRAPHIC UNITS AND LITHOSTRATIGRAPHIC UNITS

In the present paper the relationship is discussed between sequence stratigraphy and other stratigraphic branches such as lithostratigraphy. In the multiple stratigraphic division, chronostratigraphy and lithostratigraphy are regarded as the chief disciplines, and the others as supplementary disciplines of stratigraphy. Among the supplementary disciplines, sequence stratigraphy is relatively independent, being of both chronostratigraphic and lithostratigraphic natures, and may play an important part in improving the boundaries of both chronostratigraphical and lithostratigraphical units. Some possible relationships between sequence stratigraphic and lithostratigraphic units are discussed. The sequence stratigraphic approach has been applied in the regional geological surveys of the Zibo and Wenzu Sheets. It is suggested that a duplex mapping method of "sequence unit lithostratigraphic unit" may be used in 1∶50,000 geological mapping in sedimentary areas.