In North Hungary east of the Danube, small outcrops of the Mesozoic basement are known. They are generally considered to belong to the Transdanubian Range Unit. The basement block in the vicinity of Csovár is made up of Triassic carbonates of platform and basin facies, respectively. The 1200 m deep Csovár (Csv)-1 well exposed a significant part of the basin facies, and entered into strongly tectonized dolomites beneath it. The succession exposed by the Pokolvölgy quarry completed the sequence upward and offered an excellent opportunity for detailed sedimentological observations. Re-investigation of the Csv-1 core led to the conclusion that the approximately 600 m thick lower part of the sequence, consisting of dolomites inserted by thin slices of extremely varied lithology and age (Triassic to Cretaceous) is not a part of the normal stratigraphic succession. The upper part of the Csv-1 core and the section of the Pokolvölgy quarry exposed an Upper Carnian-Rhaetian succession of basin and toe-of-slope facies. The latter is indicated by gravity-flow deposits and redeposited fossils of carbonate platform origin, and in the large amount of remnants of Rhaetian terrestrial plants.
|Number of pages||67|
|Journal||Acta Geologica Hungarica|
|Publication status||Published - dec. 1 1997|
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