20.500.12556/RUL-171632 Sedimentarna analiza jurskih plasti severnega obrobja Dinarske karbonatne platforme na Matajurju magistrsko delo Sedimentary analysis of Jurassic beds from northern margin of Dinaric Carbonate Platform on Mt. Matajur master's thesis V sklopu magistrske naloge sem sedimentološko in biostratigrafsko raziskal profil jurskih apnencev na Matajurju ter ga koreliral z razvoji Dinarske karbonatne platforme, Julijskim pragom in Slovenskim bazenom. Raziskovano območje se nahaja na severnem pobočju Matajurja. Strukturno gledano spada v Zunanje Dinaride, najverjetneje v najvišji Trnovski pokrov. Paleogeografsko Matajur pripada prehodnemu območju med severnim robom Dinarske karbonatne platforme in Julijskim pragom. Profil Matajur z litostratigrafsko enoto 1 začenjajo debelo plastnati spodnjejurski platformni apnenci, v katerih prevladujejo ooidi in različna biogena zrna, prisotni pa so tudi onkoidi. Sedimentacija je potekala v laguni, z občasnimi okopnitvami na eni strani in odlaganjem višje energijskih sedimentov na drugi strani. S pomočjo foraminifer je bila določena spodnjejurska starost. Nad njimi so odloženi hemipelagični in presedimentirani apnenci litostratigrafske enote 2. Enoto sestavljajo prva plast apnenčeve breče, plastnati in gomoljasti mikritni apnenci s kalkareniti in vrhnji paket apnenčevih breč. Klaste v brečah predstavljajo predvsem litoklasti litostratigrafskih enot 1 in 2 ter bioklasti, ki proti vrhu prevladujejo. V vezivu prevladujejo ooidi. Sedimentacija je potekala na podmorski planoti, ki je imela v zaledju povezavo z aktivno Dinarsko karbonatno platformo. S pomočjo foraminifer je bila določena srednjejurska starost. Litostratigrafsko enoto 3 sestavljajo gomoljasti in mikritni apnenci z roženci. V spodnjem delu se pojavljajo še posamezne plasti kalkarenitov in apnenčevih breč, v katerih so pogosta zrna mikroproblematike »Tubiphytes«. Litostratigrafsko enoto 3 označuje tudi visoka vsebnost pelagičnih krinoidov Saccocoma sp. Litostratigrafska enota 3 je zgornjejurske starosti. Litostratigrafsko enoto 4 predstavlja zgornjejurski in spodnjekredni mikritni Biancone apnenec, profil pa zaključuje bazalna breča zgornjekredne Zgornje flišoidne formacije. In this master's thesis I performed sedimentological and biostratigraphical analysis of Jurassic limestones on Mt. Matajur. The succession was correlated with Dinaric Carbonate Platform, Julian High and Slovenian Basin. Investigated area is located on the northern slope of Mt. Matajur. Structurally, it belongs to the External Dinarides, most likely to the highest Trnovo Nappe. The area of Mt. Matajur paleogeographically belongs to the transitional zone between the northern margin of the Dinaric Carbonate Platform and the Julian High. The Matajur section starts with Lower Jurassic platform limestone of Lithostratigraphic unit 1. Prevailing grains are ooids and bioclasts. Some oncoids may occur as well. Sedimentation took place in lagoon, with occasional emersion on one side and deposition of high energy sediments on the other side. Age of lithostratigraphic unit 1 was determined on the basis of foraminifers. Lithostratigraphic unit 2 comprises hemipelagic limestones, breccias and calcarenites beds. It starts with a breccia layer, followed by bedded and nodular micritic limestone, intercalated with calcarenite beds. The unit ends with a large section of limestone breccias. Clasts in breccias are in the lower part mostly lithoclasts from Lithostratigraphic unit 1 and 2 and bioclasts in the upper part of the unit. Grain in matrix are mostly ooids. Sedimentation occurred on submerged plateau, which was still connected to the Dinaric Carbonate Platform in the hinterland. Age of the Lithostratigraphic unit 2 is Middle Jurassic. Lithostratigraphic unit 3 comprises nodular and micritic limestones with chert. Some calcarenites and limestone breccias with “Tubiphytes” are present in the lower part. The most common grains are pelagic crinoids Saccocoma sp. based on these, the unit in Late Jurassic in age. Lithostratigraphic unit 4 comprises Upper Jurassic and Lower Cretaceous micritic Biancone Limestone. Matajur section ends with Upper Cretaceous limestone breccia of the Upper flyschoid formation. Dinarska karbonatna platforma Julijski prag jura presedimentirani apnenci Matajur Dinaric Carbonate Platform Julian High Jurassic resedimented limestones Mt Matajur true false false N. Vantur Slovenski jezik Angleški jezik Magistrsko delo/naloga 2025-08-29 09:00:04 2025-08-29 09:00:09 2025-11-19 10:56:17 0000-00-00 00:00:00 2025 0 Ljubljana 0 Ljubljana XIV, 56 f. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 55 106866 257764099 26352.pdf 26352.pdf 1 DC04E71262CBF22149E839A4A74C965A f4b643467f3029615f254c4de91877e06e6d80e2c742e9cc47d1414296a21675 b3301ec6-84a5-11f0-9328-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=215014 Naravoslovnotehniška fakulteta 0 0 0