Compound-specific and bulk 14C and 2H isotopes from the Kueishantao hydrothermal system

This dataset includes data from the Kueishantao shallow-water hydrothermal system (Taiwan). The first Excel sheet (POC_isotopes) includes radiocarbon contents (Δ14C), stable carbon isotope compositions (δ13C), and concentrations of particulate organic carbon (POC) for water column samples collected at different distances and depths relative to the yellow and white vents, together with associated metadata and analytical uncertainties. Some values were compiled from previously published datasets due to sample availability. For the samples directly above the vent orifice (in cursive), POC in mg L-1 were taken from Lin et al. 2020 (https://doi.org/10.1016/j.margeo.2020.106121), while F14C and δ13C values of POC were taken from Wang et al. 2022 (https://doi.org/10.1029/2022GC010508). The second Excel sheet (Hydrogen_isotopes_water_fluid) contains hydrogen stable isotope compositions (δ2H, VSMOW) of vent fluids and water column samples along a horizontal transect away from the vents, including distances from the vent orifice. The third Excel sheet (Compound_specific_radiocarbon_hydrogen_isotopes) reports compound-specific radiocarbon (Δ14C) and hydrogen isotope (δ2H) data for individual fatty acids, along with measurement targets, carbon masses, and analytical errors. One compound was lost during radiocarbon analysis and is reported as not determined (n.d.).