Table 2. Results of Mineral Composition Analysis.
total
mineral composition, wt (%) |
relative
clay abundance, wt (%) |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
label | quartz | feldspar | calcite | dolomite | pyrite | clay | illite | I/Sa | chlorite | kaolinite |
A1 | 36.7 | 8.7 | 13.7 | 3.5 | 7.6 | 29.8 | 36 | 41 | 14 | 9 |
A2 | 42.0 | 6.8 | 18.0 | 3.6 | 3.5 | 26.1 | 33 | 42 | 16 | 9 |
A3 | 36.0 | 5.9 | 23.0 | 3.6 | 2.3 | 29.2 | 32 | 43 | 16 | 9 |
A4 | 45.7 | 10.4 | 12.6 | 3.0 | 0.5 | 27.8 | 38 | 33 | 19 | 10 |
B1 | 47.9 | 8.7 | 10.8 | 4.6 | 1.1 | 26.9 | 37 | 34 | 18 | 11 |
B2 | 44.3 | 7.8 | 12.4 | 4.1 | 1.1 | 30.3 | 38 | 31 | 18 | 13 |
C1 | 40.7 | 8.5 | 12.5 | 5.2 | 3.1 | 27.9 | 29 | 52 | 13 | 6 |
I/S represents illite/smectite mixed layer. The results of A1, A3, B1, and B2 are from Yang et al.1