From: Artificial weathering of rock types bearing petroglyphs from Murujuga, Western Australia
Sample | Time [months] | Δ [wt.%] | ||||||
---|---|---|---|---|---|---|---|---|
SiO2 | Al2O3 | Fe2O3 | K2O | CaO | TiO2 | MnO | ||
Gabbro | 1 | 4.2 ± 2.1 | 6.8 ± 2.1 | − 6.8 ± 1.3 | − 3.4 ± 1.5 | − 14.9 ± 3.8 | − 7.5 ± 1.9 | − 2.3 ± 1.9 |
3 | 5.7 ± 1.6 | 11.8 ± 3.8 | − 8.77 ± 1.6 | − 6.2 ± 1.6 | − 8.70 ± 5.4 | − 3.0 ± 4.0 | − 10.39 ± 2.5 | |
4 | 8.0 ± 3.0 | 16.2 ± 7.2 | − 3.9 ± 1.1 | − 10.9 ± 1.2 | − 22.4 ± 1.8 | − 11.5 ± 3.8 | − 7.1 ± 1.9 | |
Granophyre | 1 | 12.8 ± 5.4 | 16.9 ± 11.8 | 10.7 ± 4.0 | 17.4 ± 5.2 | 27.6 ± 2.1 | 9.1 ± 4.1 | 21.6 ± 16.5 |
3 | 17.7 ± 6.0 | 48.4 ± 17.0 | − 5.1 ± 4.1 | − 7.0 ± 3.5 | − 32.4 ± 1.6 | − 13.9 ± 4.8 | 4.9 ± 5.1 | |
4 | 27.6 ± 10.4 | 71.4 ± 26.4 | − 5.1 ± 4.9 | − 9.6 ± 6.1 | − 19.7 ± 3.2 | − 7.5 ± 7.0 | − 14.7 ± 9.5 |