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Pregled bibliografske jedinice broj: 556285

Complex geological structure of western Biokovo Mt. on the route of Sv. Ilija tunnel


Korbar, Tvrtko; Fuček, Ladislav; Grgasović Tonći; Palenik, Damir; Novak, Vibor; Koch, Georg; Blagus, Zvonko; Huđber, Kristina; Hodak, Tomislav
Complex geological structure of western Biokovo Mt. on the route of Sv. Ilija tunnel // Biokovo na razmeđi milenija: razvoj parka prirode u 21. stoljeću, knjiga sažetaka / Protrka, Ksenija ; Škrabić, Hrvoje ; Srzić, Stipe (ur.).
Makarska: Park prirode Biokovo, 2011. str. 61-64 (predavanje, domaća recenzija, sažetak, znanstveni)


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Naslov
Complex geological structure of western Biokovo Mt. on the route of Sv. Ilija tunnel

Autori
Korbar, Tvrtko ; Fuček, Ladislav ; Grgasović Tonći ; Palenik, Damir ; Novak, Vibor ; Koch, Georg ; Blagus, Zvonko ; Huđber, Kristina ; Hodak, Tomislav

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Biokovo na razmeđi milenija: razvoj parka prirode u 21. stoljeću, knjiga sažetaka / Protrka, Ksenija ; Škrabić, Hrvoje ; Srzić, Stipe - Makarska : Park prirode Biokovo, 2011, 61-64

ISBN
978-953-56909-0-0

Skup
Biokovo na razmeđi milenija: razvoj parka prirode u 21. stoljeću

Mjesto i datum
Makarska, Hrvatska, 17-19.11.2011

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
Biokovo; stratigraphy; palaeogeography; tectonics; External Dinarides; tunnel; Croatia

Sažetak
Tunnel “Sv. Ilija” has length of 4440 m and overlays of 1300 m that, together with inaccessible terrain at the tunnel route, makes an unique problem for geological interpretation. During geological mapping for the purpose of drawing a prognostic geological section, a numerous new data have been collected. Tunnel cut in its larger part through Jurassic-Cretaceous carbonate rocks, mostly limestones, that belong to different genetic and structural-tectonic units (Fig. 1). Structural complex of the western Biokovo Mt. generally conforms to the structures presented in MARINČIĆ et al. (1976), however an additional significant structural unit is made of deformed carbonate deposits of “Kotišina-Tilovica” (JELASKA et al., 2000, 2003) e.g. NE Adriatic trough (KORBAR, 2009), that is possibly a NW extension of „Budva-Cukali“ basin (CHOROWICZ, 1975). Four main structural units (from SW to NE) have been separated on the geological section. They belong to the Outer Dinarides, consisting of deformed layers deposited on different segments of the Adriatic Microplate: 1) Baška Voda – Vrulja: thick succession of intensely deformed mostly clastic flysch deposits with intercalations of grainy limestones (Eocene, Pg2) ; 2) Topići – Dubci: overturned hectometer sized anticline with SW vergence, made of rudist limestone from the Gornji Humac Formation (Coniacian-Santonian, K23-4) and overlying Paleogene Foraminiferal Limestone (Eocene, Pg2) ; 3) Bast – Gornja Brela: deformed massive deposits of Cretaceous-Paleogene slope-to-basin mostly crystalline limestone and breccia (K25-6, Pg) and overlying flysch clastics. 4) Sv. Ilija – Zadvarje: kilometer sized anticlinal structure (faulted to huge blocks) of the main West Biokovo massive, made of the Jurassic shallow-water carbonates in the southern limb (4a), popped-up fragmented core (4b) and generally monoclinal succession of the Jurassic to Upper Cretaceous shallow-water carbonates (the youngest is Gornji Humac Fm.) in the northern limb (4c). Anticline 2 is over the frontal fault thrusted upon the intensively deformed flysh of the Adriatic Segment, e.g. over the unit 1. Units 2, 3 and 4 are mutually delineated by steep (subvertical) faults. According to the Cretaceous and Paleogene stratigraphy, units 2 and 4 can be attributed to the same tectonostratigraphic unit (High Karst, Dinaridic Segment), but the unit 3 has specific development of deposits of the youngest Cretaceous and Paleogene, that suggest the complex paleogeography and polyphase tectonics. It can be assumed that deposits of the NE Adriatic trough have been squeezed through previously overtrusted parts of Dinaridic Segment (KORBAR, 2009). Structure of the West Biokovo is bordered from the NE by weekly expressed counter-directed reverse fault that reduced the thickness of the Gornji Humac Fm. (Coniacian-Santonian), overlain by the Eocene Foraminiferal Limestone. Geomechanical characteristics of limestone are closely correlated with the frequency of stratal discontinuities, but also with the structural-tectonic position of the particular unit. In such manner are massive limestones and breccias from the unit 3 highly fragmented in decimeter blocks, which is probably the consequence of their tectonic position. However, the Middle Jurassic massive limestones from the unit 4a are not so fragmented. During excavation of the tunnel occasionally thin (dm to m) occurrences of Paleogene clastics (silty claystone and clay) has been detected. These clastics have been squeezed into brecciated fault zones. In the middle part of the tunnel, there was a decameter cavern filled up with unconsolidated sediments (silt, silty clay, sand) that slow down the excavation process. Prognostic geological section has been largely confirmed during excavation of the tunnel.

Izvorni jezik
Engleski

Znanstvena područja
Geologija



POVEZANOST RADA


Projekt / tema
181-1191152-2697 - Stratigrafija naslaga krede u okviru geodinamike jadranskog područja Hrvatske (Korbar, Tvrtko, MZOS - )
181-1811096-1093 - Osnovna geološka karta Republike Hrvatske 1:50.000 (Belak, Mirko, MZOS - )

Ustanove
Hrvatski geološki institut

Profili:

Avatar Url Tvrtko Korbar (autor)

Avatar Url Vibor Novak (autor)

Avatar Url Damir Palenik (autor)

Avatar Url Tonči Grgasović (autor)

Avatar Url Georg Koch (autor)

Avatar Url Zvonko Blagus (autor)

Citiraj ovu publikaciju

Korbar, Tvrtko; Fuček, Ladislav; Grgasović Tonći; Palenik, Damir; Novak, Vibor; Koch, Georg; Blagus, Zvonko; Huđber, Kristina; Hodak, Tomislav
Complex geological structure of western Biokovo Mt. on the route of Sv. Ilija tunnel // Biokovo na razmeđi milenija: razvoj parka prirode u 21. stoljeću, knjiga sažetaka / Protrka, Ksenija ; Škrabić, Hrvoje ; Srzić, Stipe (ur.).
Makarska: Park prirode Biokovo, 2011. str. 61-64 (predavanje, domaća recenzija, sažetak, znanstveni)
Korbar, T., Fuček, L., Grgasović Tonći, Palenik, D., Novak, V., Koch, G., Blagus, Z., Huđber, K. & Hodak, T. (2011) Complex geological structure of western Biokovo Mt. on the route of Sv. Ilija tunnel. U: Protrka, K., Škrabić, H. & Srzić, S. (ur.)Biokovo na razmeđi milenija: razvoj parka prirode u 21. stoljeću, knjiga sažetaka.
@article{article, year = {2011}, pages = {61-64}, keywords = {Biokovo, stratigraphy, palaeogeography, tectonics, External Dinarides, tunnel, Croatia}, isbn = {978-953-56909-0-0}, title = {Complex geological structure of western Biokovo Mt. on the route of Sv. Ilija tunnel}, keyword = {Biokovo, stratigraphy, palaeogeography, tectonics, External Dinarides, tunnel, Croatia}, publisher = {Park prirode Biokovo}, publisherplace = {Makarska, Hrvatska} }




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