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Coarsening-Upward Cycles - Sedimentary Signature of the Sea-Level Changes (CROSBI ID 477321)

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

Bucković, Damir Coarsening-Upward Cycles - Sedimentary Signature of the Sea-Level Changes // 2. hrvatski geološki kongres / Vlahović, Igor ; Biondić, Ranko (ur.). Zagreb: Hrvatski geološki institut, 2000. str. 496-x

Podaci o odgovornosti

Bucković, Damir

engleski

Coarsening-Upward Cycles - Sedimentary Signature of the Sea-Level Changes

During Mesozoic greenhouse periods (VEEVERS, 1990), amplitudes of the eustatic fourth-to-fifth-order sea-level changes were less than 10 metres (GROTZINGER, 1986; TUCKER, 1993). As the fair-weather wave-base on carbonate platforms in geological past was positioned at an average depth of five metres (TUCKER & WRIGHT, 1990), each fourth-to-fifth order sea level oscillation could lead to "emergence" of the sea bottom (with average depth of 10 m) above the fair-weather wave base. This way sedimentary conditions changed periodically from low energy subtidal to higher energy subtidal, what consecutively and periodically changed the limestone structural types from muddy to more grainy ones. Depending upon the third-order sea level changes, during periods of no local tectonic movements, in platform sedimentary environments, these sea level changes could produce successions of coarsening-upward cycles with grainy peloid-bioclastic or ooid upper member.

coarsening-upward cycles; sea-level changes; carbonate platforms

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Podaci o prilogu

496-x.

2000.

objavljeno

Podaci o matičnoj publikaciji

2. hrvatski geološki kongres

Vlahović, Igor ; Biondić, Ranko

Zagreb: Hrvatski geološki institut

Podaci o skupu

2. hrvatski geološki kongres

poster

17.05.2000-20.05.2000

Cavtat, Hrvatska

Povezanost rada

Geologija