CAJ | 학술논문

测定了冲绳海槽中部Jade热液活动区中18个热夜沉积物样品的硫同位素组成，其中10个硫化物样品的δ34S值为5．2x10-3～7．2×10-3，7个硫酸盐样品的34S值为16．3×10-3～22．3×10-3, 1个自然硫样品的δ34S值为8．2x10-3, 热液沉积物的硫主要来自中、酸性火山岩和海水，并且在流体与沉积物相互作用过程中海底沉积物也可能为热液沉积物的形成提供部分的硫．导致本区热液沉积物中硫化物与其他热液活动区的硫同位素组成不同的原因，主要是各热液活动区的硫源以及有关岩浆活动和构造演变的不同．海底热液体系中硫的演化是一个复杂的过程，涉及被加热海水的上升、流体与火山岩的相互作用、海水硫酸盐和中、酸性火山岩中硫的混合作用以及流体与沉积物相互作用一系列海底热液活动，其中海水和中、酸性火山岩的相互作用是本区硫演化的一个重要机制．
측정료충승해조중부Jade열액활동구중18개열야침적물양품적류동위소조성，기중10개류화물양품적δ34S치위5．2x10-3～7．2×10-3，7개류산염양품적34S치위16．3×10-3～22．3×10-3, 1개자연류양품적δ34S치위8．2x10-3, 열액침적물적류주요래자중、산성화산암화해수，병차재류체여침적물상호작용과정중해저침적물야가능위열액침적물적형성제공부분적류．도치본구열액침적물중류화물여기타열액활동구적류동위소조성불동적원인，주요시각열액활동구적류원이급유관암장활동화구조연변적불동．해저열액체계중류적연화시일개복잡적과정，섭급피가열해수적상승、류체여화산암적상호작용、해수류산염화중、산성화산암중류적혼합작용이급류체여침적물상호작용일계렬해저열액활동，기중해수화중、산성화산암적상호작용시본구류연화적일개중요궤제．
Eighteen samples of hydrothermal sediments from the Jade hydrothermal field in the central Okinawa Trough have been analyzed. Sulfur isotopic values for 10 sulfide samples valy from 5.2 x 10-3 to 7.2 x l0-a, δ34S values for 7 sulfate samples vary from 16.3 x 10-3 to 22.3 x 10-3, and δ34 value for 1 native sulphur sample is 8.2 x 10-3. The major sources of sulfur for hydrothermal sediment are intermediate to acid volcanic rocks and seawater sulfate, and it is possible that the partial sulfur of hydrothermal sediment is frown the pelagic sediment by the interaction betwee hydrothermal fluid and sediment. The reasons of causing the distinct differences in sulfur isotope values for sulfide samples from hydrothermal sediment (compared with other hydrothermal fields), are the differerces in the sources of stflfur, the magmatic activity and the tectonic evolution in different hydrothermal fieds. The sulfur evolution is a long ap<l compleac process in the seaflcor hydrothermal system, involving the asending of heating seawater, the interaction between fluid and volcanic rocks, the mixing of seawater sulfate and sulfur from intermediate to acid volcanic rocks, and the fluid/pelagic - sediment interaction. And the intexaction betweeaa seawater and intermediate to acid volcanic rocks is a important mechanism for the sulfur evolution in the Jade hydrothermal field.