Buda Limestone

The I/S peak at 11.8 A in the pattern of soil developed on the Del Rio Clay indicates ordered interstratification as opposed to the random interstratification in the BS I/S (16.9 A peak). Soils developed on the Buda Limestone contain smectite and yield XRD patterns similar to Edwards soil A. Therefore, neither the Del Rio Clay nor the Buda Limestone is the source of the Barton Springs suspended sediment. 

The first pebble spots containing faunas not of a sporadic nature were found in the freshwater limestone underlying rocks of Buda Castle Hill (Kadic and Mottl, 1944 already containing Parelephas trogontherii). 

Fig. 3b. Distribution of the freshwater limestone deposits (shaded in black) in the Buda Hills. Patches designated by names have provided vertebrate faunas (after Schr ter, 1953) for details, see the text.

Chronologically closely related to the faunal assemblages of Tarko and Vertes-szdlds are the faunas found in the freshwater limestone of the Varhegy (Castle Hill) of Buda (Fig. 20). 

Mottl (1942) was the first to report in detail Pleistocene mammalian fossils from the limestone and gravel of the Castle Hill of Buda, at an altitude of 150-160 m a.s.l. The material from the underlying gravel of the limestone is composed of macrofauna elements only, because the sporadic finds were found during building constructions. 

Fig. 20. Distribution of localities connected with the freshwater limestone formations of the Castle Hill of Buda. Numbers refer to houte numbers (see the text) the Hilton locality is indicated separately.

If the faunas of the limestone conglomerates of the Buda Castle Hill are compared, it is clear that apart from rare local elements, assemblages only a few hundred meters apart are of the same geological age. 

Scheuer, G. and Schweitzer, F., 1974. Uj szempontok a Budai-hegyseg kbmyeki edesvizi meszkd-osszletek k6pzdd6sehez. (New aspects of the formation of freshwater limestone packs in the environs of the Buda Hills.) Fbldr. Kozl. (22), 2 113—134 (in Hungarian). 

Szabo, J., 1863. Az edesvizi m6szkeplet viszonyai 6-Budan. (The freshwater limestones of 6-Buda.) Jegyzbkbnyvi kivonat Foldt. Tars. Munk., Vol. II, 189—190 (in Hungarian). 

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