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Cyclicity of Barremian Tidal Flat Deposits of Southern Adriatic Platform, Croatia (CROSBI ID 549709)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija

Sweeney, Rafferty, J. ; Harman, Charles ; Husinec, Antun ; Read, J. Fred Cyclicity of Barremian Tidal Flat Deposits of Southern Adriatic Platform, Croatia // GSA Annual Convention, Abstracts with Program. Houston (TX), 2008. str. 178-x

Podaci o odgovornosti

Sweeney, Rafferty, J. ; Harman, Charles ; Husinec, Antun ; Read, J. Fred

engleski

Cyclicity of Barremian Tidal Flat Deposits of Southern Adriatic Platform, Croatia

The Adriatic Platform provides a window into carbonate deposition spanning the Jurassic-Cretaceous transition in the western Tethys. The sediments exposed on the islands of southern Croatia are highly cyclic. The Barremian section is characterized by extensive microbial laminite facies that is by far the best preserved tidal flat facies compared to any Lower Cretaceous interval of the Adriatic platform. Three logged sections, each between 150 and 200 m thick, display superbly developed peritidal parasequences. The parasequences are composed of shallow subtidal (lime mudstone and peloid-intraclast-skeletal packstone-grainstone) to intertidal (microbial laminites and fenestral lime mudstone) and subaerial exposure facies (greenish clay sheets or breccia with greenish clay or mud matrix). The majority of the cycles may have been formed by high-frequency changes in sea level perhaps related to orbital forcing ; possible durations of the interval and its component parasequences are being evaluated to see if these are compatible with a precessional vs longer term obliquity or eccentricity signals. Some parasequences probably also formed by autocyclic processes and local tectonics. Presence of platform-wide subaerial exposure surfaces capping some cycles suggest a relative sea level falls affected the platform over wide areas.

Barremian; cycles; tidal flat; facies; Adriatic Platform

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Podaci o prilogu

178-x.

2008.

objavljeno

Podaci o matičnoj publikaciji

GSA Annual Convention, Abstracts with Program

Houston (TX):

Podaci o skupu

2008 Joint Meeting of The Geological Society of America, Soil Science Society of America, American Society of Agronomy, Crop Science Society of America, Gulf Coast Association of Geological Societies with the Gulf Coast Section of SEPM

poster

05.10.2008-09.10.2008

Houston (TX), Sjedinjene Američke Države

Povezanost rada

Geologija