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Earth Science Institute of the Slovak Academy of Sciences

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METAMORPHIC EVOLUTION OF GABBROIC ROCKS OF THE BÓDVA VALLEY OPHIOLITE COMPLEX, NE HUNGARY

• Geologica Carpathica
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• Volume 51 No.2 / April 2000

Published: Apr 2000

Pages: 121 - 129

Authors: PETER HORVATH

Abstract: The Alpine polyphase metamorphic evolution path of the Bódva Valley Ophiolite Complex was reconstructed using mineral paragenetic observations, mineral chemical and thermobarometric data obtained on metagabbroic samples from boreholes in the Rudabanya Mts., NE Hungary. The dismembered ophiolite complex forms part of the Meliata Unit of the Inner Western Carpathians. The recognizable, first blueschist facies event (min. 700–800 MPa, 350–500 °C) was followed by a nearly isothermal decompression to 400–600 MPa in the greenschist facies. The following metamorphic event was characterized by temperature increase up to 500–600 °C in isobaric conditions to the albite-epidote-amphibolite facies. The P-T path is best explained by subduction, which was followed by uplift without any significant change in the temperature conditions. The late temperature increase might be caused by thermal relaxation following subduction.

Keywords: Inner Western Carpathians, Rudabanya Mts., ophiolite complex, gabbro, metamorphism

Volume 51 no. 2 / April 2000

• DIONYZ VASS, VLASTIMIL KONECNY, IGOR TUNYI, PETER DOLINSKY, KADOSA BALOGH, NATALIA HUDACKOVA, MARIANNA KOVACOVA-SLAMKOVA, BORIS BELACEK

  ORIGIN OF THE PLIOCENE VERTEBRATE BONE ACCUMULATION AT HAJNACKA, SOUTHERN SLOVAKIA

• ZOLTAN PECSKAY, IOAN SEGHEDI, HILARY DOWNES, MICHAIL PRYCHODKO, BOGDAN MACKIV

  K/AR DATING OF NEOGENE CALC-ALKALINE VOLCANIC ROCKS FROM TRANSCARPATHIAN UKRAINE

• MARTA BAK, ZBIGNIEW SAWLOWICZ

  PYRITIZED RADIOLARIANS FROM THE MID-CRETACEOUS DEPOSITS OF THE PIENINY KLIPPEN BELT — A MODEL OF PYRITIZATION IN AN ANOXIC ENVIRONMENT

• BRUNO FERRE, BRUNO GRANIER

  ROVEACRINUS BERTHOUI NOV. SP., EARLY HAUTERIVIAN REPRESENTATIVE OF ROVEACRINIDAE (ROVEACRINIDA, CRINOIDEA) OF BUSOT (ALICANTE, SPAIN)

• LADISLAVA OZVOLDOVA, JOZEF JABLONSKY, LENKA FRANTOVA

  UPPER JURASSIC RADIOLARITES OF THE CZERTEZIC SUCCESSION AND COMPARISON WITH THE KYSUCA SUCCESSION IN THE EAST-SLOVAK PART OF THE PIENINY KLIPPEN BELT (WESTERN CARPATHIANS, SLOVAKIA)

• PETER HORVATH

  METAMORPHIC EVOLUTION OF GABBROIC ROCKS OF THE BÓDVA VALLEY OPHIOLITE COMPLEX, NE HUNGARY