Vörös A. szerk.: Fragmenta Mineralogica Et Palaentologica 14. 1989. (Budapest, 1989)

Fig. 2. Bio- and chronostratigraphy used in the present paper (left); geochronology and global eustatic curves after HAQ, HARDENBOL and VAIL (1987) (right) (3) On the basis of the above values, the subsidence curves of the sea-bottom can be constructed. Adding up the cumulative thickness data of the sediments deposited in the meantime to the sea-bottom curve will result in the basement curve. Csabrendek (Cr-2) (Figs 3 and 4) Dasycladaceae occur frequently in the lower part of the limestone sequence, their last appearance is at 80.0 m, in the higher part of the Perforatus Zone. Glauconite appear in great amount at the middle of the Millecaput Zone (60. 0 m) and not much higher (49. 0 m) Nummulites disappear. The constructed curves (both for the sea-floor and for the basement) show that the subsidence was slow for a long time but during the Millecaput Zone it became faster. Somlóvásárhely (Sv-1) (Figs 3 and 5) In this sequence Dasycladaceae are present continuously from the base of the limestone and disappear at 794.0 m. Mass appearance of glauconite was recorded at 770.0 m and Nummulites can be seen up to 720.0 m. Both subsidence curves mirror a slow and gradual sinking at least for the time of deposition of the limestone and marl sequence.