Research dataset

Table 1 Gas components and isotopic compositions of hydrate-bound gas from the sites SC1 and SC2 in the Shenhu area. Table 2 Geochemical results of TOC and Rock-Eval pyrolysis of sediment samples from the site SC2 in Shenhu area. Table 3 Selected biomarkers parameters of the selected sediment samples calculated from n-alkanes, hopanes, 25-norhopanes, steranes and methyl-phenanthrenes distributions.表1 神狐海域SC1与SC2站位水合物赋存气体的组分及同位素组成。 表2 神狐海域SC2站位沉积物样品的总有机碳（Total Organic Carbon, TOC）及Rock-Eval热解地球化学测试结果。 表3 基于正构烷烃、藿烷、25-降藿烷、甾烷及甲基菲的分布特征，对筛选得到的沉积物样品计算得到的优选生物标志物参数。