Naslov
Lias carbonate platform deposits of Velebit Mt. (Croatia)

Autori
Vlahović, Igor ; Velić, Ivo ; Tišljar, Josip ; Matičec, Dubravko

Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, znanstveni

Knjiga
Harold Readings IAS Lecture Tour 99 - Croatia, Field-trip Guidebook: Some carbonate and clastic successions of the External Dinarides - Velebit Mt., Island of Rab

Urednik/ci
Nema

Izdavač
Hrvatski geološki institut ; Prirodoslovno-matematički fakultet Sveučilišta u Zagrebu ; Hrvatsko geodetsko društvo

Grad
Zagreb

Godina
1999

Raspon stranica
9-22

ISBN
Nema

Ključne riječi
Carbonate platform, litofacies, shallow-water limestones, desitional environments, Lias, Velebit Mt., Croatia

Sažetak
Deposits from the Upper Paleozoic to Jurassic and Cretaceous of the Velebit Mt. are assigned to the three major sedimnetary megasequences, each separated by a terrestrial phase: 1) Middle Carboniferous - Middle Permian ; 2) Middle Permian - Middle Triassic, and 3) Upper Triassic - Jurassic and Cretaceous. Profile from Kubus-pass (Gospić-Karlobag road) contain continuity from the uppermost part of the Lower Lias to the Middle and Upper Lias with a total thickness of approximately 270m. Shallow-water carbonate deposits was divided into fife litofacies units: 1) Units A, rhythmically alternating mudstone/wackestone and ooid grainstone are interpreted as typical peritidal deposits ; 2) Unit B, lagoonal to shallow subtidal black mudstones with packstone/floatstone intercalations ; 3) Unit C, rhythmically alternating mudstone/wackestone and grainstone/rudstones were deposited in restricted shallow-water areas (lagoonal and shallow-subtidal zones) with periodically agitated water brought in coarse carbonate detritus ; 4) Unit D, shallow -subtidal lagoonal limestones with Litiotid tempestite coquinas and 5) Unit E, bioturbated "spotty limestones" as pure mudstones to peletal wackestones were deposited with a low sedimentation rate in a calm, large shallows beneath the fair-weather wave base, large portion of organic matter and good ecological conditions for mud-eaters.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

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