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Karstified clasts in south Velebit Mt. moraines, Croatia - evidence of glaciation of karstified mountain range (CROSBI ID 574547)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa

Marjanac, Tihomir ; Tomša, Ana Merija ; Marjanac, Ljerka ; Hughes, Phil ; van Calsteren, Peter Karstified clasts in south Velebit Mt. moraines, Croatia - evidence of glaciation of karstified mountain range // 19th International Karstological school "Classical Karst". Karst Underground Protection. Postojna 20.-25.6.2011., Abstracts / Gostiničar, Petra ; Hauselmann, Philipp ; Prelovšek, Mitja et al. (ur.). Postojna: Karst Research Institute - ZRC SAZU, 2011. str. 52-52

Podaci o odgovornosti

Marjanac, Tihomir ; Tomša, Ana Merija ; Marjanac, Ljerka ; Hughes, Phil ; van Calsteren, Peter

engleski

Karstified clasts in south Velebit Mt. moraines, Croatia - evidence of glaciation of karstified mountain range

Middle Pleistocene moraines of Southern Velebit Mt. comprise karstified clasts which range from 0, 5 m up to more than 10 m in diameter. These are represented by lithologies which are common on the Velebit Mt. ; Upper Cretaceous limestones and Jelar-breccia of Paleogene-Neogene age. The moraines are several meters to several tens of meters thick and are composed of debris in grain contact, with interspaces locally filled with fine-grained matrix, and locally cemented by sparry calcite. The calcite cement is secondary infill of openwork moraine and was dated by U-Th series providing minimal age of 159.8 ka. The karstified clasts in these moraines are usually rotated and karren are abraded. Sometimes there are younger karren developed over the older forms, but both systems are today in a rotated position. Karstification of these clasts pre-dates formation of moraines which are attributed to the Riess glacial. These rillenkarren and rinnenkarren were possibly formed during the Mindel-Riess interglacial on nearby mountain tops, and were eroded and transported by glacial ice. Thus, recognition of karstified debris in moraines provides evidence of pre-middle Pleistocene karstification of the Dinaric Mountain range.

karst; karren; moraines; Pleistocene glaciation; Velebit Mt.; Dinarides

nije evidentirano

nije evidentirano

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nije evidentirano

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Podaci o prilogu

52-52.

2011.

objavljeno

Podaci o matičnoj publikaciji

19th International Karstological school "Classical Karst". Karst Underground Protection. Postojna 20.-25.6.2011., Abstracts

Gostiničar, Petra ; Hauselmann, Philipp ; Prelovšek, Mitja ; Zupan Hajna, Nadja

Postojna: Karst Research Institute - ZRC SAZU

Podaci o skupu

19th International karstological school "Classical karst" - Karst underground protection

poster

20.07.2011-25.07.2011

Postojna, Slovenija

Povezanost rada

Geologija