| Summary: | In the last few years an increasing amount of work has been done in connection with sedimentary rocks and their disintegration products, and it is only in the most recent times that their value in the work of correlation and identification is being fully realized. Most of the work, however, has been done by the British workers and on local sediments, while in this country little has been attempted along these lines. Sand comes under the heading of mechanical sediments and is of considerable geographical distribution. It may occur as loose unconsolidated product or may be found in various stages of consolidation varying from a closely packed sandstone, held together by means of a hard cementing material, to one that will crumble in the fingers. The nature of the sand varies considerably from a chemical and a physical standpoint and this variation may be attributed to the following:- (1) The hardness of the material composing the grains. (2) The distance the grains have travelled. (3) The agents by which the grains have been transported. The purpose of this investigation is to show how the physical and chemical properties, of sands, which are based on the above factors may be used as a means of correlation and identification of sands of similar horizons.
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