The variation in concentration of dissolved oxygen was relatively smaller, ranging from 2.89 mg/L to 3.16 mg/L with a mean of 3.07 mg/L. The substrates at Site F contained hard (central authigenic ...

Illite associated with I/S may be authigenic illite, but it may be affected by grinding flakes resulting in the formation of imperfect plates. However, it can be seen that many illite crystals growing ...