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A Discussion on the Physico-Chemical Factors for the Development of Pits in Gulcheru Quartzite in the Southwestern Margin of Cuddapah Basin, A. P.
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Miniature pits of varying size and shape are found in the topmost arenaceous layers of the Gulcheru quartzite. Though pits in sedimentary rocks form in a variety of ways, in clean beach sands they owe their origin to mainly physical processes. Small pits, found in the Gulcheru quartzite, have been formed as a result of interplay of difierent physico-Chemical factors which prevailed in syn- as well as post-Depositional environments. In addition to different agents of physical weathering, which played a vital role in the formation of pits in the Gulcheru quartzite, syn-depositional precipitation of iron oxides and their syn-to post-diagenetic chemical changes are believed to be the main chemical factors.
Keywords
Pits, Ferric-Hydroxide, Gulcheru Quartzite, Cuddapah Basin, Andhra Pradesh.
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