
%0 Journal Article
%A Tyler, PA 
%A Buckney, RT 
%T Ferromanganese concretions in Tasmanian lakes
%J Marine and Freshwater Research
%D 1980/08/01
%V 31
%N 4
%P 525-531
%K 
%R https://doi.org/10.1071/MF9800525
%U https://www.publish.csiro.au/paper/MF9800525 
%X Discoid ferromanganese concretions on pebble nuclei, resembling those found elsewhere in the world. occur in a number of Tasmanian lakes. Those from the now-flooded Lake Pedder had distinctive Mn/Fe ratios. The genesis of concretions is a subject of debate, but the botrpoidai nature of the oxide rims and the occurrence of globular encrustations of gelatinous cyanobacteria and bacteria on pebbles suggest microorganisms are responsible. 
