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 was consistent with the peaks of Cu and Pb, indicating that the temperature in this layer 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, there was a significant peak at a depth of 12-17cm, consistent with the Cu-Pb peak, indicating a significant increase in temperature in 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. But there is a significant peak at the depth of 12-17cm, which is consistent with the peaks of Cu and Pb. It shows that the temperature in this layer rises obviously and a large number of Cu Pb sulfides are settled.