锶同位素在沉积学中的应用新进展

随着分析测试技术的不断提高 ,锶同位素研究取得了重大进展。近年来 ,显生宙以来海水锶同位素的变化曲线不断得以补充和修正 ,已建立起具有全球一致性、可对比的海水锶同位素变化曲线背景值 ,为锶同位素的应用奠定了基础。现在 ,锶同位素不仅在示踪岩浆及成矿热液的来源和演化、计算晚期成岩改造作用的规模和程度及流体 /岩石比等方面已趋于成熟 ,并且越来越广泛运用于海平面变化、板块活动、海底扩张、成岩演化等方面的研究。此外 ,在一些热点研究上 ,如全球变化、生态环境等方面 ,也逐渐显现出重要性

NEW PROGRESS IN THE APPLICATION OF STRONTIUM ISOTOPES IN SEDIMENTOLOGY

Owing to the improvements on analytical and testing techniques, great progress has been made in research on Sr isotopes. Some global consistent and comparable marine Sr isotope curves for the Phanerozoic have been established recently. Now, Sr isotopes can be used not only to constrain the origin and evolution of magma and hydrothermal ore\|forming solutions, calculate the scale and degree of lithogenesis and ascertain the relations between fluids and rocks, but also to study sea\|level fluctuation, plate movement, ocean\|floor spreading and lithogenic evolution. Some hot research fields such as global change, ecology and environment and Sr isotope are becoming more and more important.