Dr. Nagy I. Zoltán szerk.: Fragmenta Mineralogica Et Palaentologica 2. 1970-71. (Budapest, 1971)

Lower Oligocène beds of Hungary. In the lower part of the Buda Marl (Cylindroclavulina cylindrica Zone) the characteristic dimensions are 0,3 to 0,5 mm, while in the horizon of small Globigerinidae only 0,1 to 0,2 mm, bigger specimens being very rare. The Eocene/Oligocene transitional beds take an intermediary position in this respect, too. Late Eocene-Early Oligocène evolution of the southern foreland of the Bükk Mountains In this region sedimentation began approximately at the time of the deposition of the Bryozoan Marl. In view of the geological evolution, the region can be subdivided into three be It es 1. The vicinity of Egerszalók and Noszvaj villages. During the Late Eocene, a mighty continental series was deposited (Borehole Noszvaj-J: 200 m; borehole Egerszalók-1: over 70 m). Transgression set in at the very end of the Eocene and was of rather short duration, producing limestone, calcarous marl and marl strata, containing a shallow-water fauna. In the marine group of borehole Egerszalók-1, representatives of the genera Miliolina, Nonionella, Asterigerina and Elphidium are common. In the limestone intersected from 113 to 125 m by drilling Noszvaj-3, Spaerogypsina globulus (Eeuss)

, Miliolina div.sp.

, bryozoans and lithothamniums could be observed. Bottom depth is estimated to have been between 40 and 100 m, as deduced from observations made on recent benthonic foraminiferal assemblages of the Adriatic Sea/see Chierici-Busi-CIta 1962/. 2. The vicinity of Demjén. In this sector, no continental deposits are known; they are substituted by limestones and calcareous marls. At the base of the sequence there are shallow-water (20 to 50 m

) Miliolina limestones, overlain by Nummulites limestones with bryozoans, lithothamniums and Asterigerina rotula (Kaufmann). Inferred