摘要
地幔流体及其成矿作用的研究是当前地学界倍受关注的前沿课题。地幔流体是一种以CO2和H2 O为主、同时含有一定量的溶质成分、相对富集大离子等不相容元素的超临界流体 ,具有独特的溶解和输运能力 ,主要来源于俯冲板块的脱水、脱气作用和地核及地幔脱气作用。地幔流体在许多大型—超大型金属、非金属、油气矿床和矿集区形成过程中具有重要意义。地幔流体成矿作用主要表现为本身成矿、提供成矿物质、成矿流体和成矿热动力。地质构造背景、岩浆活动、矿床地质、矿床地球化学等方面的研究均可提供地幔流体成矿作用的证据。地幔流体成矿作用的主要特征是矿床具有深大断裂构造背景、伴随幔源岩浆活动、成矿物质和成矿流体具有幔源性。
Studies of geofluids in the Earth's mantle (or mantle geofluids) and their roles in ore\|forming processes have become one of the most interesting researches for geoscientists in the world The geofluids in the mantle are composed mainly of CO 2 and H 2 O, and also some amount of solutes, which are enriched in large ion lithophile elements, and have large potential to dissolve and transport elements because of their supercritical behaviors It has been proved that the mantle geofluids can play an important role in formation especially of large or super\|large metal or nonmetal ore deposits, mainly through providing and/or transporting ore\|forming materials The geofluid\|involved ore\|formation processes have their own characteristics, such as deep fault\|related geotectonic background, having a close relationship with mantle\|derived magmatism and mantle\|derived ore\|forming materials, and often forming large or super\|large ore deposits
出处
《地学前缘》
EI
CAS
CSCD
2001年第4期231-243,共13页
Earth Science Frontiers
基金
国家科学技术部攀登计划预选项目 ( 95 预 39)
杰出青年基金项目 ( 4962 5 30 4)
