1·CO_2 gas pools in Huagou district have particular geochemical character, maybe there were some decarbonated CO_2 added into the gas pools, need further research work.
花沟地区的气体地球化学特征与众不同，可能存在碳酸盐地层变质脱气产生的CO_2的混入，但具体原因尚待进一步研究。