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The 'Vékény Marl Formation' of Hungary

1993; Elsevier BV; Volume: 14; Issue: 4-5 Linguagem: Inglês

10.1006/cres.1993.1030

1095-998X

Zoltáin Balla, Ilona Bodrogi,

Geological formations and processes

The Vékény Marl is a 'couches rouge' type of Turonian sediment in Hungary (red Globotruncana Marls). It is the Hungarian equivalent of the lower (Turonian) part of the Púchov Marl in the western Carpathians, the upper (Senonian) part of which can be correlated with the Izsák Marl of Hungary. An analysis has been carried out of the data available on the lithological properties, stratigraphical position, fauna and relationships between various Upper Cretaceous sequences of southeastern Hungary on one hand, and between the Hungarian red marl sequences and their Carpathian analogies on the other. It has been concluded that the separation of the Hungarian red marl sequences into two distinct formations cannot be accepted. Furthermore, it has been shown that the Púchov Marl (Turonian through Senonian) development in Hungary is clearly restricted to the Szolnok zone of Eocene flysch and its imaginable southwestern continuation into the Danube Tisza interfluve and southern Transdanubia. The tectonic correlation with the Romanian and Ukrainian Carpathians in the northeast suggests the possibility of future discoveries of Turonian red marls in the Szolnok zone and of a Cenomanian age for the conglomerate at the base of the Izsák Marl.