caa a22 4500 477064345 CHVBK 20180405111408.0 cr unu---uuuuu 170330e19961201xx s 000 0 eng 10.1007/BF02440116 doi (NATIONALLICENCE)springer-10.1007/BF02440116 Calcite formation in microbial mats: modeling and quantification of inhomogeneous distribution patterns by a cellular automaton model and multifractal measures [Elektronische Daten] [Jürgen Kropp, Werner von Blob, Thomas Klenke] The evolution of early diagenetic calcite cements in microbial mats of recent supratidal sediments of the southern North Sea is modeled in a two-dimensional microscale approach by a cellular automaton model (CAM). Calcite is traced out in the model by virtual calcium distribution patterns obtained from runs under different assumptions concerning sediment-intrinsic conditions. For justification of the CAM, real calcium distribution patterns, documented by scanning electron microscopy coupled with energy-dispersive X-ray spectrometry (SEM/EDX), are quantitatively compared with the virtual patterns on the basis of multifractal analyses. The formation of high magnesian calcite as a consequence of biogenic anaerobic decomposition of organic matter starts at certain initial calcite domains. In this stage an inhomogeneous and multifractal calcium distribution is characteristic. Nearly complete remineralization of organic matter leads to monofractal behavior of generalized fractal dimensions (DB(q) ±1.84). The CAM results confirm that calcite formation is a self-determining morphogenetical process and diffusive transport processes of reactants within the mat affect the biogenic calcite formation. Springer-Verlag, 1996 Microbial mats nationallicence Calcite nationallicence Fractal nationallicence Multifractal nationallicence Tidal sediments nationallicence Cellular automaton model nationallicence Kropp Jürgen Potsdam Institute for Climate Impact Research (PIK), P.O. Box 601203, Potsdam, Germany aut von Blob Werner Potsdam Institute for Climate Impact Research (PIK), P.O. Box 601203, Potsdam, Germany aut Klenke Thomas Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky University of Oldenburg, P.O. Box 2503, D-26111, Oldenburg, Germany aut Geologische Rundschau Springer-Verlag 85/4(1996-12-01), 857-863 0016-7835 85:4<857 1996 85 531 https://doi.org/10.1007/BF02440116 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02440116 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kropp Jürgen Potsdam Institute for Climate Impact Research (PIK), P.O. Box 601203, Potsdam, Germany aut NATIONALLICENCE 700 1- von Blob Werner Potsdam Institute for Climate Impact Research (PIK), P.O. Box 601203, Potsdam, Germany aut NATIONALLICENCE 700 1- Klenke Thomas Institute for Chemistry and Biology of the Marine Environment (ICBM), Carl von Ossietzky University of Oldenburg, P.O. Box 2503, D-26111, Oldenburg, Germany aut NATIONALLICENCE 773 0- Geologische Rundschau Springer-Verlag 85/4(1996-12-01), 857-863 0016-7835 85:4<857 1996 85 531 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer