Assessing the relative packing behaviour of Chanda

Authors: M K Singh

Publish Date: 2011/03/03

Volume: 77, Issue: 1, Pages: 35-41

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Abstract

The paper concerns mainly with properties of packing of the Proterozoic Chandarpur and Khairagarh sandstones of Chhattisgarh Basin An attempt has been made to decipher the nature of boundary between Chandarpur Group and overlying Raipur Group on the basis of grain packing For the purpose of study based on eight representative thin sections of Chandarpur and Khairagarh sandstones measurements of grain size distribution types of grain contacts packing density Pd packing proximity Pp and linear regression analysis has been carried out The relation of packing density with packing proximity of Khairagarh sandstone shows positive correlation coefficient r with linear regression equation y and no clear trend in packing proximity Pp vs grain size Is is observed whereas Chandarpur sandstone shows packing density increases and packing proximity decreases with linear regression equation y and correlation coefficient r Chandarpur grain size tends to increase with packing density Pd whereas packing proximity Pp increases but Khairagarh sandstone packing density Pd decrease with increase of grain size Is and packing proximity Pp tends to increase with decrease in grain size Above study indicates that packing behaviour of Chandarpur sandstones and Khairagarh sandstones are entirely different

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