Abstract

Nature is always a source of inspiration. Naturalproduction, protection and degradation are more balanced. Inthis paper the natural production of shear strength anddegradation of the soils are examined through facts and figures.Limestones commonly contain only one or two dominantminerals. They are composite grains made up of large number ofsmall calcite or aragonite crystals. The term allochem cover allof these organized carbonate aggregates that make up the bulkof many limestones. Skempton points (Clay types with varyingpercentage of clay size particles) are compared to differentstages in the formation of aggregate grains through naturalprocesses which results in manifestation of coaxial andnon-coaxial components of shear strength of soils inshallow/deep marine environment. All these aggregates slowlyreach CCD (Carbonate Compensation Depth). In CCD all thecarbonates in any form are dissolved completely and only mud(silt and clay) and sand are separated. At this stage both coaxialand non-coaxial components of shear strength is drasticallyreduced and in abyssal plains as evidences show that the shearstrength is barest minimum or residual.