THE EFFECT OF GLUCONIC ACID SECRETION BY PHOSPHATE-SOLUBILIZING PSEUDOMONAS PUTIDA BACTERIA ON DISSOLUTION OF PYROMORPHITE Pb5(PO4)3Cl AND Pb REMOBILIZATION

摘要

In general, the trace fossil Rusophycus , preserved as a concave-upward structure on the top of a bed, is considered to be a fossilized marking, made by a trace maker. The structures described from the Cambrian (Furongian) of central Poland are genetically related to Rusophycus . However, despite their occurrence on the tops of beds, they are not fossilized traces, but compaction-related features, resulting from differential sandstone and mudstone compaction with possible mediation by organic-rich, heterolithic sediments. The preservation of these structures probably was influenced by biofilms or biomats.