International Journal of Earth & Environmental Sciences Volume 1 (2016), Article ID 1:IJEES-102, 7 pages
Research Article
Coarsening-Upward Cycles Origin-Another Autocyclic Explanation

Damir Bucković* and Josip Filipović

Department of Geology, Faculty of Science, University of Zagreb, Croatia
Dr. Damir Bucković , Department of Geology, Faculty of Science, University of Zagreb, Croatia; E-mail:
10 January 2016; 08 April 2016; 11 April 2016
Bucković D, Filipović J (2016) Coarsening-Upward Cycles Origin- Another Autocyclic Explanation. Int J Earth Environ Sci 1: 102. doi:


Carbonate platform sediments are often organized in successive series of coarsening-upward cycles. In one coarsening upward cycle the grain size is increasing upward implying that the hydraulic energy required to deposit coarser and heavier grains must be higher than the energy required for the fine grains deposition.Two types of coarsening-upward cycles are analyzed: (1) cycles with peloidal-bioclastic upper cycle members, and (2) cycles with oolitic upper cycle members. These coarsening-upward cycles are regarded here as a consequence of the sea-bottom oscillations below and above the fair-weather wavebase but only triggered by autocyclic processes, creating simple model for the coarsening-upward cycle origin.