How does biological weathering takes place?
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Biological weathering takes place under the influence of life activities of organisms. The organic processes involve biological dissolution of rocks from bacterial activity, humic acids and bioerosion or destruction. The changes occur by the growth of roots, and drilling of organisms (shells, lichens, cyanobacteria, algae and the fungi) in the rock on which they cultivate. The bioerosion of carbonate rocks (limestone and dolomite) caused by cyanobacteria, lichens and fungi has particularly significant role. The large areas where these organisms live, and their prolonged activities during the geological period destroy significant amount of rock with the formation of massive quantity of very fine-grained carbonate detritus of limestone sludge.
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