1. This file is a supplement to the manuscript “Enhanced Continental Weathering Contributed to the Termination of the Middle Miocene Climatic Optimum” by Wu et al. (2025, Geophysical Research Letters).
2. This file compiles bulk and multi-size (<5, 5–20 and >20 μm) fraction samples from the KMG section.
3. If you plan to use the compiled dataset in this file, please cite the paper of Wu et al. (2025).