Prethodno priopćenje

Pyroclastic flow sediment (ignimbrite) in Miocene Tar Formation, Drava Depression

Dijana Bigunac ; INA Industrija nafte d.d., SD Istraživanje i proiz.nafte i plina, Sektor za geologiju i upravljanje ležištima, PJ za geologiju, Šubićeva 29, Zagreb, Hrvatska
Krešimir Krizmanić ; INA Industrija nafte d.d., SD Istraživanje i proiz.nafte i plina, Sektor za geologiju i upravljanje ležištima, PJ za geologiju, Šubićeva 29, Zagreb, Hrvatska
Branko Sokolović ; INA Industrija nafte d.d., SD Istraživanje i proiz.nafte i plina, Sektor za geologiju i upravljanje ležištima, PJ za geologiju, Šubićeva 29, Zagreb, Hrvatska
Zlata Ivaniček ; INA Industrija nafte d.d., SD Istraživanje i proiz.nafte i plina, Sektor za geologiju i upravljanje ležištima, PJ za geologiju, Šubićeva 29, Zagreb, Hrvatska

Sažetak

In the 2009 one of the exploration wells near Croatian-Hungarian borderline instead of prognosed primary target (Miocene barrier bar composed of sandstones, biogenic limestones and clayey limestones) 72 m shallower drilled through massive, 88 m thick pyroclastic flow sediment. Petrological analyses had been done on core as well as on drilling cuttings and the sediment is described as devitrified vitroclastic welded tuff, i.e. ignimbrite. As a result of micropaleontological and palynological analyses from overlying and underlying deposits, the age of the pyroclastic flow sediment was determined as the most probably Badenian. Lithostratigraphically that ignimbrite belongs to the Tar Formation.

Ključne riječi

pyroclastic flow; ignimbrite; Tar Formation; Miocene; Drava Depression

Hrčak ID:

92322

URI

https://hrcak.srce.hr/92322

Datum izdavanja:

31.10.2012.

Podaci na drugim jezicima: hrvatski

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