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Rock glaciers and periglacial phenomena in the southern Carpathians

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  • Petru Urdea

Abstract

Glacial and periglacial phenomena in the southern Carpathians are an undoubted reality. Climatic conditions and lithology favour the existence of rock glaciers, block fields, cryoplanation terraces, ploughing blocks and solifluction. The highest frequency and the most complex of rock glaciers are found in granites and granodiorites within northerly cirques and valleys of the Paring and Retezat Mountains, whereas less frequent and predominantly embryonic, protalus rampart‐type forms occur in epimetamorphic precrystalline schists. Water temperatures below 2 °C of the springs emerging in summer from the fronts of some rock glaciers point to local permafrost conditions possibly still existing today. Dans les Carpates Méridionales, le relief glaciaire et périglaciaire représente une réalité incontestable. Les conditions climatiques et lithologiques favorisent l'existence de glaciers rocheux, de champs de blocs, de terrasses de cryoplanation, de blocs glissants et de phénomènes de solifluction. Concernant les glaciers rocheux, la plus grande fréquence et les formes les plus développées et les plus complexes se trouvent dans les granites et granodiorites des cirques et des vallées se situant sur le versant nord des Montagnes de Paring et Retezat. Les formes de glaciers rocheux sont plus rares et plutôt embryonnaires (protalus ramparts) dans les schistes cristallins épimétamorphiques. Des températures d'eau inférieures à 2° C, mesurées dans des sources émergeant à la base de quelques glaciers rocheux inactifs et actifs, indiquent la présence actuelle de conditions de pergélisol.

Suggested Citation

  • Petru Urdea, 1992. "Rock glaciers and periglacial phenomena in the southern Carpathians," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 3(3), pages 267-273, July.
  • Handle: RePEc:wly:perpro:v:3:y:1992:i:3:p:267-273
    DOI: 10.1002/ppp.3430030317
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