Naslov
Upper Jurassic algae from Ravna Vlaška, Mt. Biokovo

Autori
Sokač, Branko

Vrsta, podvrsta i kategorija rada
Poglavlja u knjigama, znanstveni

Knjiga
9th International Symposium on Fossil Algae - Croatia 2007, Field Trip Guidebook and Abstracts

Urednik/ci
Grgasović, Tonči ; Vlahović, Igor

Izdavač
Hrvatski geološki institut

Grad
Zagreb

Godina
2007

Raspon stranica
73-77

ISBN
978-953-6907-15-1

Ključne riječi
Jurassic, Biokovo, fossil algae

Sažetak
In the lower part of the Upper Jurassic succession one can see a multiple occurrence of sedimentary discontinuities caused by local emersions which took place during the Oxfordian and the Kimmeridgian. In the interval between these emersions, micritic limestones contain Heteroporella anici (SOKAČ & NIKLER), Salpingoporella annulata CAROZZI, rare Salpingoporella sellii (CRESCENTI), and the first occurrence at this locality of Clypeina jurassica FAVRE. In the biomicrite beds above the second emersion level, there is a significant increase in the number of Clypeina fragments and cross-sections, but without the other aforementioned species. Only S. annulata reappears again in the higher parts of the Upper Jurassic. Stratigraphically, the strata between the two emersion levels containing the algas are Kimmeridgian in age, and the first appearance of Clypeina above the second emersion level indicates the Lower Tithonian.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

POVEZANOST RADA