陨石原始型惰性气体的研究进展——Q气及其携带物特征

DEVELOPMENT OF STUDIES ON PRIMITIVE NOBLE GAS IN METEORITES(I):PHASE Q

陨石中的原始型惰性气体是在陨石形成前或陨石形成期间 ,组成陨石的物质通过吸附、溶解等方式将原始太阳星云中的惰性气体保留在陨石中形成的。实验研究发现 ,球粒陨石中的原始型惰性气体浓集于一种称为 Q相的物质中 ,因此在原始型惰性气体中占绝对优势的组分被称为 Q气或 P1气。介绍了陨石原始型惰性气体概念的由来、Q相的发现经过、Q相的成分和在球粒陨石中的存在部位以及 Q气的元素丰度和同位素组成。并根据不同类型陨石中 Q气的分配情况 。

The primitive noble gas in meteorite is from solar nebular and enteres into the meteorite through adsorption or dissolution of materials that constitute the meteorite before the formaion the latter or during its formation.Studies on primitive noble gas in meteorite show that the primitive noble gas of chondrites is concentrated in phase Q of chondrite,whose main component is called 'Q gas' or 'P1 gas'.In this paper,we have explained the reason for such terms and the process of separated phase Q from chondrite,composition of phase Q,position of phase Q in chondrite,and element abundance and isotopic composition of Q gas.Finally we have discussed the original significance of the primitive noble gas in meteorites.