Continental carbonates are
markedly influenced by hydrodynamics and geochemistry, like their marine
relatives, but many fundamental dynamics are quite different. In this paper, Gierlowski-Kordesch et al. explore the genesis and depositional
conditions that produce extensive carbonate lakes on siliciclastic floodplains
in the fossil record by a literature review of Phanerozoic river systems and by
examining several Pennsylvanian freshwater limestones of the Appalachian Basin.
The results of the study reveal that climate is not the most important control;
instead, a Ca-rich provenance and hydraulic setting (below the regional spring
line) are most important factors favoring accumulation of thick carbonate lake
successions among distal anastomosed river deposits.
Carbonate lake deposits associated with distalsiliciclastic perennial-river systems
by Elizabeth Gierlowski-Kordesch, David B. Finkelstein, Jessie J. Truchan
Holland, and Kevin D. Kallini
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