Fig. 4From: A new method to determine volume of bromalites: morphometrics of Lower Permian (Archer City Formation) heteropolar bromalitesLinear relationship between the calculated preliminary volumes and observed volumes. The calculations were done with the proposed volume formula. Observed volumes were obtained by recording water displacement using a graduated cylinder. The slope of the regression line (1.7088) is used as a constant in the proposed volume formulaBack to article page