Szabó János szerk.: Fragmenta Mineralogica Et Palaentologica 20. 2002. (Budapest, 2002)

Budapest, Péter-hegy quarry — The quarry, closed in 1996, was near Csillaghegy, at the northwestern part of Budapest. Only one section remained exposed where the geological formaűons can be seen in two parts. In the lower block, typical Kiscell Clay is visible in 10-13 m. thickness In the upper block, 10 m thick sandstone is covered by 20 m thick Tard Clay and 8-9 m Kiscell Clay. The final member of this section is Pleistocene travertino of 1-m thickness. Pilisborosjenő brickyard — The clay pit is near the Budapest-Dorog road, in the NW suburb area of Budapest. A light grey, sometimes marly and/or aleuritic clay, belonging to the Kiscell Clay Formation, is exposed here. Some thin glaukonitic sand intercalations can be also found. Here, the Kiscell Clay is in contact with the Hárshegy Sandstone along a fault. In the forarninifer fauna, the agglutinated species are characteristic Törökbálint brickyard — It is near the M7 highway in a few kms ditance SW from Budapest. Here, the Kiscell Clay is marly and aleuritic and bearing also a few molluscs. A curiosity of the foraminifera fauna is an agglutinated assemblage with huge Reticulophragmium. Kiseged, road cut — It lies in NE part of Eger (N Hungary). WEILER (1933) mentioned this locality first in the geological literature. The Eocene-Oligocene strata can be studied here in a 180 m long section. The whole series contain a continuous sequence of Priabonian limestone (Szépvölgyi Limestone Formation), Buda Marl, Tard Clay, and Kiscell Clay. Unfortunately, the contacts of the formations are not exposed. Szépvölgy Limestone is compact, slightly laminated with red algae and corals. Here, the Buda Marl is light yellowish, brown and clayey. The lower member of the Tard Clay is poorly stratified clayey marl with molluscs [Cardium lipoldi (ROLLE)] and giant ostracods (BÁLDI, 1986). The upper member of the Tard Clay is strongly laminated, silicified clay (shale) with fish imprints and scales. Typical, compact Kiscell Clay coveres the former starata. Noszvaj, Síkfőkút quarry — This quarry lies NE of Eger, near the village Noszvaj. SCHRÉTER (1939) mentioned it first. The quarry and an artificial outcrop expose an 11 m thick profile. The sequence from bottom to the top is as follows: - glauconitic, bioclastic limestone with red algae, bryozoans, echinids, molluscs, Nummulites - the alternation of slighdy laminated clay, clayey marl and light-grey glauconitic limestone - the incompact glauconitic limestones and marly limestone is exposed in a 4.7 m thickness in the artificial outcrop. The larger forarninifers do not give satisfactory information about the age of the exposed formation because the exclusively Oligocène forms are lacking. The disappearance of the rare Late Eocene species (Nummulites pulcbellus, N. chavanensis) may help to put the Eocene /Oligocène boundary into the white clayey marl layers. According to the planktonic foraminifers, the Eocene/

Oligocène boundary can be drawn in the upper part of this section, near the white clayey marl layers, too BÁLDI et al., 1984). Table 4 — The available Textulariida and Miliolida material. Hungarian Geological Institute ; Clavulina cylindrica [ Clavulina. Szabói j Gauryina Reussi \ Gaudryina textilaroides \ Haplophragmium rotundidorsatum \ Clavulina cylindrica ' Clavulina Szabói 1 Gaudryina irregularis < Gaudryina textilaroides • Gaudryina Reussi \ Haplophragmium acutidorsatum \ Haplophragmium rotundidorsatum \ 1 u O 'S -a n 3 m rt y, u H Dept. Paleontology, Univ. Eötvös Loránd j Clavulina cylindrica ! Clavulina Szabói Gaudryina Réussi Haplophragmium acutidorsatum Haplophragmium rotundidorsatum ; Üröm 33 4 Várhegy 17 2 1 50 3 8 Szépvölgy 3 8 25 Budakeszi 17 Kis-Svábhegy 8 30 38 44 2 10 48 6 Zugliget 5 13 8 Újlak 1 75 1 2 1 [ózsefhegy 1 25 11 Sárisáp 8 14 Szápár 1 24 Buda 11 Porva 7 Tokod Kisgyőr Mogyorós 5 Kiscell 2 1 Gellérthegy 3 Bogdány 16 N.Kovácsi 34 Esztergom 6 14 Csfürdő Zöldárok Sum r(N o m o r<1 o o c-l -too m IN. r-l IN, Eger, Wind brickyard — This profile is a type section of the Egerian. It has been known since the beginning of the Twentieth century (TELEGDI-ROTH, 1914). Its knowledge considerably increased after drilling an 80- m borehole in 1961. The succession, from the bottom is as follows: - Kiscell Clay - clay, marly clay, and marl, with tuffitic lenses. Fn the foraminifera fauna, Gemellides eocaenus, G. costatus and some Uvigerinas are characteristic. - Tuffitic and glauconitic sandstone member of the Eger Formation coveres the Kiscell Clay, conformably. These layers contain Flabellipecten burdigalensis anàMiogypsina formosensis. - The molluscan clay member of the Eger Formation is monotonous with some aleuritic layers. Heterolepa dutemplei, Cassidulina-Caucasina associations (HORVÁTH, 1985), and Globigerina angulisuturalis, Globigerinoides quadrilobatulus are typical in these beds. - The upper part of the profile consists of alternating claysand-sandstone layers, with rich molluscan fauna (BÁLDI, 1973, 1984), Caucasina and Ammonia viennesis foraminifera associations. - Continental clay and tuff cover the Oligocène layers.