Sporomorfy w solach cechsztyńskich z otworu Lębork IG I

Abstract

SPOROMORPHS IN THE ZECHSTEIN SALTS FROM BORE HOLE LĘBORK IG IThe present paper is concerned with the results of investigations of Zechstein salt encountered in bore hole Lębork IG I. In general 11 samples of salt belonging to the cyclothems Z1 and Z2, occurring at Lębork at a depth from 803,2 to 947,8 m were examined. Selection of sporomorphs was made by means of flotation of sediment obtained after dissolution of salt. Preparations were made without maceration, this being possible due to a low degree of coalification of the sporomorphs.The salt belonging to the cyclothem Z1 does not contain sporomorphs. These were only found in three samples of salt of the cyclothem Z2 at the depths 804,2 m, 820,2 m and 844,5 m. They are solely pollen grains of the genus Illinites, Jugasporites, Lueckisporites, Taeniaesporites, Pityosporites, Platysaccus, Favisporites, Simplicesporites and Vittatina. Moreover, in two samples there were found single sporomorphs resembling pollen grains of group Cedrus.The pollen spectra of the three samples are similar. Lueckisporites, Pityosporites (each about 30 per cent), and Platysaccus (about 15 per cent) are predominant here. The frequency of other forms amounts up to some per cent.