JL125岩心中Cu/Fe比值从底部到顶部大致降低，表明一个逐渐降温的

The Cu/Fe ratio in the core of JL125 generally decreases from the bottom to the top, indicating a gradual cooling hydrothermal process. However, a significant peak appeared at the depth of 12-17cm, which overlapped with the positions of Cu and Pb peaks, indicating that when the layer was formed, the temperature increased significantly, and a large amount of Cu-Pb sulfides settled.

The JL125 core Cu/Fe ratio is roughly lower from the bottom to the top, indicating a hydrothermal process that cools down gradually. However, a significant peak occurred at a depth of 12-17cm, overlapping with the position of the Cu and Pb peaks, indicating a significant increase in temperature at the time of formation of the layer, which resulted in a large amount of Cu-Pb sulfides.

The Cu / Fe ratio in the core of jl125 decreases from the bottom to the top, indicating a gradually cooling hydrothermal process. However, there is a significant peak at the depth of 12-17cm, which overlaps with the positions of Cu and Pb peaks, indicating that the temperature rises obviously and a large number of Cu Pb sulfides are settled when the layer is formed.<br>