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Earth Science Institute of the Slovak Academy of Sciences

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SHORT-LIVED QUATERNARY VOLCANISM IN THE PERSANI MOUNTAINS (ROMANIA) REVEALED BY COMBINED K-Ar AND PALEOMAGNETIC DATA

• Geologica Carpathica
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• Volume 55 No.4 / August 2004

Published: Aug 2004

Pages: 333 - 339

Authors: CRISTIAN G. PANAIOTU, ZOLTAN PECSKAY, ULRICH HAMBACH, IOAN SEGHEDI, CRISTINA E. PANAIOTU, ITAYA TETSUMARU, MIHAI ORLEANU, ALEXANDRU SZAKACS

Abstract: New K-Ar ages combined with paleomagnetic data demonstrate that the basaltic volcanism in the Persani Mountains occurred in two relatively short phases. The first one lasted several tens of thousands of years around 1.2 Ma and it seems that the inception of the volcanic activity took place in two isolated places and reached the maximum extent during the Cobb Mountain Normal Polarity Subchron when larger areas were covered. The second phase started just before 600 ka and was restricted to the central area of the volcanic field. One lava flow of this phase recorded a short-lived reversed polarity event inside the Brunhes Normal Chron, probably the 15b reversal excursion. The duration of this phase was less than 200 kyr, which is the best estimate according to the available radiometric data.

Keywords: Carpathians, Persani Mountains, Quaternary volcanism, alkali basalts, K-Ar data, paleomagnetism, magnetic polarity

Volume 55 no. 4 / August 2004

• WILFRIED GRUBER, REINHARD F. SACHSENHOFER, NICOLA KOFLER, KURT DECKER

  THE ARCHITECTURE OF THE TROFAIACH PULL-APART BASIN (EASTERN ALPS): AN INTEGRATED GEOPHYSICAL AND STRUCTURAL STUDY

• LISA GIOCONDA GIGLIUTO, CONSTANTIN GRASU, FRANCESCO LOIACONO, CRINA MICLAUS, ELVIO MORETTI, DIEGO PUGLISI, GIULIANA RAFFAELLI

  PROVENANCE CHANGES AND SEDIMENTOLOGY OF THE EOCENE–OLIGOCENE ”MOLDOVIŢA LITHOFACIES” OF THE TARCĂU NAPPE (EASTERN CARPATHIANS, ROMANIA)

• HANS-MARTIN SCHULZ, ACHIM BECHTEL, THOMAS RAINER, REINHARD F. SACHSENHOFER, ULRICH STRUCK

  PALEOCEANOGRAPHY OF THE WESTERN CENTRAL PARATETHYS DURING EARLY OLIGOCENE NANNOPLANKTON ZONE NP23 IN THE AUSTRIAN MOLASSE BASIN

• IOAN SEGHEDI, ALEXANDRU SZAKACS, NORMAN J. SNELLING, ZOLTAN PECSKAY

  EVOLUTION OF THE NEOGENE GURGHIU MOUNTAINS VOLCANIC RANGE (EASTERN CARPATHIANS, ROMANIA), BASED ON K-Ar GEOCHRONOLOGY

• CRISTIAN G. PANAIOTU, ZOLTAN PECSKAY, ULRICH HAMBACH, IOAN SEGHEDI, CRISTINA E. PANAIOTU, ITAYA TETSUMARU, MIHAI ORLEANU, ALEXANDRU SZAKACS

  SHORT-LIVED QUATERNARY VOLCANISM IN THE PERSANI MOUNTAINS (ROMANIA) REVEALED BY COMBINED K-Ar AND PALEOMAGNETIC DATA

• GIUSEPPE CARERI, FRANCESCO GUERRERA, AGUSTIN MARTIN-ALGARRA, MANUEL MARTIN-MARTIN, ANTONIA MESSINA, VINCENZO PERRONE

  DISCUSSION OF ”PETROGRAPHY AND GEOCHEMISTRY OF GRANITOID PEBBLES FROM THE OLIGOCENE-MIOCENE DEPOSITS OF THE INTERNAL RIFIAN CHAIN (MOROCCO): A POSSIBLE NEW HYPOTHESIS OF PROVENANCE AND PALEOGEOGRAPHICAL IMPLICATIONS” BY L.G. GIGLIUTO et al.

• LISA GIOCONDA GIGLIUTO, DIEGO PUGLISI, GIUSEPPA PUGLISI

  REPLY TO THE DISCUSSION OF ”PETROGRAPHY AND GEOCHEMISTRY OF GRANITOID PEBBLES FROM THE OLIGOCENE-MIOCENE DEPOSITS OF THE INTERNAL RIFIAN CHAIN (MOROCCO): A POSSIBLE NEW HYPOTHESIS OF PROVENANCE AND PALEOGEOGRAPHICAL IMPLICATIONS” BY G. CARERI et al.