Precipitation patterns formed by self‐organizing processes in porous media |
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| Authors: | L M BARGE D E HAMMOND M A CHAN S POTTER J PETRUSKA K H NEALSON |
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| Institution: | 1. Department of Earth Sciences, University of Southern California, Los Angeles, CA;2. Department of Geology and Geophysics, University of Utah, Salt Lake City, UT;3. Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA |
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| Abstract: | We compare laboratory and field examples of self‐organized mineral precipitates in porous media. Laboratory tests of silver chromate precipitation in glass beads and glass bead/gel mixtures produce structures such as periodic banding and mm‐size spherules. These are morphologically similar to the varied forms of iron oxide precipitates in the Jurassic Navajo Sandstone, Utah USA, that preserve records of former fluid redox boundaries in a porous and permeable sandstone. Experimental studies of periodic precipitates in porous media can provide valuable insight for understanding the diagenetic history of similar precipitates in natural environments. |
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| Keywords: | concretions Liesegang bands self‐organization |
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