Table 1 Variation range and average abundance of trace elements in ZK14-1 drilling core sediments (μg/g)

All of them are higher than those in the upper strata, while the content of Sr element is lower than that in the upper strata. The sediments in this section have geochemical characteristics different from those in the upper strata.

Relative to the abundance of trace elements in sediments of the Chinese mainland The sediment in this hole has relatively high levels of Li (44.6 μg/g), Ga (25.5 μg/g), Rb (142.3 μg/g), Sr (214.6 μg/g), Cs (14.2 μg/g), Th (22.3 μg/g), and U (4.7 μg/g). The sediments slightly higher than those in Chinese mainland include Sc (15.4 μg/g), Y (31.7 μg/g), and Nb (18.5 μg/g), indicating that during the weathering and leaching process, the abundant metal ions such as Rb in the Tatareng rock mass were washed and leached out by atmospheric precipitation, etc.