Sea‐Level Fall Driving Enhanced Hydrothermal and Tectonic Activities: Evidence From a Sediment Core Near the Tectonic‐Controlled Tianxiu Vent Field, Carlsberg Ridge

Hydrothermal activity on mid-ocean ridges plays an important role in shaping marine chemistry, yet the variability of hydrothermal venting and its forcing mechanism remain elusive. Here, we analyzed a sediment core obtained near tectonic-controlled Tianxiu vent field, Carlsberg Ridge, to reconstruct history. The documented two significant events (H1 H2) past 30 ka. H1 occurred at 24.1–24.5 ka during Last Glacial Maximum (LGM), while H2 10.5–11.6 deglacial period. Compared H2, was relatively weak, it concurrently with tectonic event. We suggest that caused by increased melt production associated decompression melting upper mantle sea-level fall, which is consistent previously published records, whereas likely triggered intense event depressurization LGM, unrecognized.