Table 1 Calculation of CIA from XRF for 11 samples from the Urapunga 4 core’s laminated mudstones
From: Weathering in a world without terrestrial life recorded in the Mesoproterozoic Velkerri Formation
Sample depth (m) | XRF analysis (mol) | ||||
|---|---|---|---|---|---|
Al2O3 | Na2O | K2O | CaO* | CIA (%) | |
358.00 | 0.181 | 0.015 | 0.043 | 0.000 | 76.0 |
336.83 | 0.192 | 0.017 | 0.041 | 0.000 | 76.9 |
324.02 | 0.135 | 0.016 | 0.034 | 0.000 | 73.0 |
304.52 | 0.176 | 0.017 | 0.039 | 0.000 | 75.6 |
246.45 | 0.153 | 0.017 | 0.030 | 0.000 | 76.5 |
212.20 | 0.127 | 0.016 | 0.033 | 0.020 | 64.8 |
196.20 | 0.106 | 0.017 | 0.030 | 0.020 | 61.0 |
170.05 | 0.115 | 0.016 | 0.031 | 0.020 | 63.3 |
136.00 | 0.123 | 0.010 | 0.044 | 0.010 | 65.5 |
107.25 | 0.112 | 0.004 | 0.063 | 0.000 | 73.6 |
77.35 | 0.182 | 0.010 | 0.048 | 0.000 | 75.1 |
