Kilka spostrzeżeń z wybrzeża Morza Południowochińskiego na temat sedymentacji fliszu oraz uwagi o bioglifach gwiaździstych Karpat fliszowych

Abstract

SOME REMARKS ON THE SOUTH CHINA SEA SHORE AND ON THE FLYSCH SEDIMENTATION Summary The author presents his own observations made during his stay in 1960-61 at the South China Sea shore. In numerous sites of the shore, morphologically very diversified (f. ex. flat shore of delta, lowering calcareous mountains flooded by the sea, rocky coasts a.o.) various sediments were deposited mostly, resembling the flysch ones. Among others, there may be observed also such forms as slump structures (rill-marks), as well as forms similar to Spirophyton (Zoophycos) Zuber R (2), first of all, however, details of life and customs of crabs, a.o. It results of these observations that the star-like traces of crabs may only be formed at the sea shore and only those may be preserved which are built up of the clayey and dusty sediments, somewhat dried up, and then covered by fine-grained sand during the process of filling with mud. These forms are not traces of feeding but, in some degree, they represent a form of work of crabs, and in the case of rolling the mud balls, also a form of play, sine€ after making a ball, the crab leaves it behind and takes no more interest for it. In connection with this, the interpretation of belongings of the forms presented by W. Nowak in his publication (l) must be changed. Thus, the forms marked with the letters M, L may be, for a certainly regarded as the traces of crabs rolling the mud balls and the forms A-I as the traces of crabs pushing down the balls. The other forms may be the feeding traces of annelids (1), or other ones, being, at present, difficult to identify, in detail. When presumed that the star-like hieroglyphs are the feeding traces of crabs (W. Nowak, l) or, as I previously said, the traces of rolling the balls (the work or the play of crabs), and in other case the traces of pushing down the material carried out of the channel, or the feeding traces of annelids - it must be admitted that the given series of the flysch formations, represents the coast-continental deposits (beach deposits) and not the deposits laid down near by the shore. The deposits, in which the traces are found, cannot be formed by suspension currents. These latter rather disturb the traces and do not preserve them. This is also proved by other phenomena, which cannot be otherwise interpreted as only coastal deposits, f. ex. conglomeratic sandstones. It results of this that the part of the flysch formations thought, at present, to belong to the deposits laid down by suspension currents in the deep sea zone, may only represent the coastal deposits there.