In contrast to the above
Statistical results for changes in elemental and bulk massa using Zr as a reference frame.Change(%)+/−(%)Si124/4Al164/4Fe179/9Ca− 13/3Mg04/3K− 64/4Na− 14/4Mn76/5Ti94/4P− 29/8Sc116/6Cr279/8Co212/10Cu3717/15Zn24/4Rb126/5Sr34/4Y8347/38Zr00/0Nb24/4Mo− 1212/10Ba− 385/5Hf78/7Yb115/4LOI35739/36T12.53.6/3.6aBolded values are statistically significant at 95% confidence level.Full-size tableTable optionsView in workspaceDownload as CSV
The loss of K mass suggests that BMS 493 at the depth level of the saprock sampled during this study, solutions stripped some K from the interlayer position during the transformation of biotite to mixed-layer biotite/vermiculite (e.g., Girty et al., 2013, and references therein). Such alteration did not affect Mg, as its mass was unchanged within the sampled saprock (Table 8).
In summary, the combined overall effects of eluviation and illuviation acting at the depth level of the sampled saprock resulted in a statistically significant 12.5 ± 3.6% increase in bulk mass (Table 8).