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Mikrofacies in fosili karbonatnih olistolitov v ladinijskih plasteh iz Dol pri Litiji
Mavrič, Tilen (Author), Gale, Luka (Mentor) More about this mentor... This link opens in a new window

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Abstract
V Sloveniji so izmed triasnih grebenov dokaj dobro raziskani norijsko-retijski in karnijski grebeni, ne pa tudi ladinijski. V okolici Dol pri Litiji v tufskem peščenjaku, ki se menjava s tankoplastnatim kalkarenitom, ležijo številni bloki masivnega apnenca. Nekateri vsebujejo makroskopsko prepoznavne solenoporaceje, redko tudi kolonijske korale. Medtem pa podrobnejše raziskave o sestavi teh apnencev do sedaj še niso bile narejene. Namen diplomske naloge je bil kvalitativno in kvantitativno določiti sestavo blokov, bioto, določiti izvor blokov. Vsega skupaj sem določil 11 različnih mikrofaciesev, od katerih eden predstavlja tufski peščenjak iz okolne kamnine. Rezultati so pokazali, da je kvantitativna analiza podala delno ujemanje z kvalitativno razvrstitvijo zbruskov v mikrofaciese. Ugotovil sem, da biota kaže določene podobnosti z spodnjekarnijskimi apnenci iz drugih delov Slovenije in ima zelo veliko skupnega s podobnimi bloki iz formacije San Cassiano v Dolomitih. Fosilna združba je značilno plitvomorska in kaže na grebenski izvor blokov. Zato ugotavljam, da je prišlo do resedimentacije teh olistolitnih blokov v bazensko okolje. Fosilna združba potrjuje ladinijsko starost blokov.

Language:Slovenian
Keywords:Dole pri Litiji, ladinij, mikrofacies, olistolitni bloki
Work type:Bachelor thesis/paper (mb11)
Organization:NTF - Faculty of Natural Sciences and Engineering
Year:2019
COBISS.SI-ID:1518430  Link is opened in a new window
Views:229
Downloads:135
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Secondary language

Language:English
Title:Microfacies and biota from carbonate olistoliths in Ladinian beds at Dole pri Litiji
Abstract:
Research has been done in Slovenia regarding the Norian-Rhaetian and Carnian reefs but not the Ladinian. In the vicinity of Dole pri Litiji, inside the tuff sandstone, which interchanges with thin-layered calcarenite, lie numerous blocks of massive limestone. Solenoporacea and rarely colony corals can be seen macroscopically in some of them. Until now, no detailed research has been performed regarding the composition of these limestones. The purpose of this diploma work is to qulitatively and quantitatively determine the composition of the blocks, to determine the biota and the source of the blocks. Altogether 11 different microfacies can be distinguished. The results have shown that the qualitative analysis partially coincides with the qualitative sorting of the thin sections into microfacies. The studied biota shows many similarities with the biota of Lower Carnian limestones from other parts of Slovenia and has much in common with the biota from the San Cassiano formation in the Dolomites of Italy. The fossil association is characteristically shallow water and indicates a reef origin of the blocks. It can be concluded that the olistolith blocks must have been resedimented. The fossil association generally coincides with the Ladinian age.

Keywords:Dole pri Litiji, Ladinian, microfacies, olistolith blocks

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