Hydrodynamic concept of stromatactis formation in geology

01.01.2007 - 31.12.2011
Grant agency: 
Registration number: 
Internal investigator/coinvestigator: 
Jindřich Hladil
Interní řešitel: 
is principal investigator
Internal collaborators: 
Jiří Adamovič
Internal collaborators: 
Petr A. Čejchan
Internal collaborators: 
Leona Chadimová
Internal collaborators: 
Lenka Lisá
Internal collaborators: 
Petra Sychová

The stromatactis cavities are present in fine-grained carbonate sediments in the nature, forming the specific shapes and reticulate arrays. However, the mechanisms behind the origin of these cavities are subjects of heated discussions in geology for 125 years. Numerous biotic and abiotic factors were considered, but with unclear results. Most recently, our team produced a critical analysis of these sedimentary structures and formulated a new hypothesis that these cavities would likely originate during the rapid deposition of extremely polydisperse and multimodal granular mixtures. Although the first experiments simulated the production of these cavities with a considerably high level of similarity, there is a lot of work to be done if we wish really explain these unique phenomena in terms of hydrodynamics. The proposed interdisciplinary study is novel, and the results would be fundamental for sedimentology and hydrodynamics, with possible implications in related technologies.