COMPARATION BETWEEN ACIENT AND RECENT WAVEMARK

The common wavemarks in strata are often deformed under theinfluence of diagenesis and its various later stage factors so that the indentiflcation of wave marks nature becomes difficult. The production of wavemark is controlled by underwater topography as well as sediments size of which argillic silt material is the best. It' s necessary to carefully recognize original wavemarks namely peaks well preserved ones while those which have been reproduced cannot be used to judge and conclude by its deformed peaks and if the base rock on which wavemarks formed is force-pressed. We should pay attation to the effects of tectonis stress exerted on wavemarks.