Geochemistry and mineralogy of sedimentary cores containing Gas Hydrates as well as gas hydrate composition from GHASS2 cruise

Data collected during GHASS2 Cruise (https://doi.org/10.17600/18001358 ) Porewater data includes: total alkalinity, hydrogen sulphide, methane, δ13C-CH4, δD-CH4, anions and catioins, minor elements. Sediment analysis: sediment granulometry, porosity, mineralogy. Gas Hydrates data: molecular and isotopic compostion of hydrate-bound gas.本数据集采集自GHASS2航次（https://doi.org/10.17600/18001358）。 孔隙水数据涵盖总碱度、硫化氢、甲烷、甲烷碳同位素比值（δ¹³C-CH4）、甲烷氢同位素比值（δD-CH4）、阴离子、阳离子及微量元素。 沉积物分析包含沉积物粒度、孔隙度与矿物组成。 天然气水合物数据涉及水合物结合气体的分子组成与同位素组成。