摘要
大西洋中脊热液硫化物（矿床）中广泛出现松散粒状和胶状黄铁矿，利用1988年所采样品通过其形态、成份和热电性质的研究，对这种黄铁矿的成因、环带成因和热液演化特征进行初步探讨。结果表明，松散粒状和胶状黄铁矿是热液进入海底与海水混合后沉积形成，与固结粒状黄铁矿分属不同矿化阶段（期），反映热液活动的多阶段成矿特征；胶状黄铁矿环带和微环带是黄铁矿胶体沉淀后重结晶作用形成的；松散粒状黄铁矿和胶状黄铁矿同时出现是已经停止活动的烟囱物特征。
Hydrothermal sulfide sampled from the Mid-Atlantic Ridge in 1988 was rich in loose granular and colloid form pyrite whose morphology, composition and ther-moelectricity characteristics, were studied by authors in their research on the pyrite origin, girdle origin and hydrothermal evolution characteristics. The results suggest that loose granular and colloid form pyrite deposited and formed after the hydro-thermal sulfide and the seawater mixed. These pyrites belonging respectively to different minerogenetic stages of the consolidated granular pyrite, reflected the mul-tiple stage minerogenetic characteristics of hydrothermal activities. Colloid form pyrite girdles and microgirdles were formed by recrystallization after pyrite colloid had deposited. Concurrence of loose granular and colloform pyrites are the characteristics of the stopped-active chimney.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1995年第4期350-354,共5页
Oceanologia Et Limnologia Sinica
基金
博士后基金
