Application of ecostratigraphy to sequence stratigraphy

The results of ecostratigraphy can directly serve sequence stratigraphy. The habitat type curve is useful not only in the analysis of sequences and parasequences, but also in demonstration of the process of regional sea level change. The various biological surfaces usually coincide with or relate to the boundaries of sequences or system tracts. The ecostratigraphic framework composed of coenozones, community sequences and ecotracts with good timing completely corresponds to the sequence stratigraphic framework of the sedimentary basin. Therefore, through establishment of the habitat type curve in individual section, recognition of the various biological surfaces, regional ecostratigraphic correlation and the formation of an ecostratigraphic framework of the sedimentary basin, ecostratigraphy plays an important role in the study of sequence stratigraphy and the reconstruction of regional and even global sea level changes.