NOBLE-GAS FRACTIONATION DURING THE DEGASSING OF MELTS

被引：8
|
作者：
SPASENNYKH, MY
TOLSTIKHIN, IN
机构：
[1] UNIV BERN, INST MINERAL & PETROL, BERN, SWITZERLAND
[2] RUSSIAN ACAD SCI, KOLA SCI CTR, INST GEOL, APATITY 184200, RUSSIA
来源：
GEOCHEMICAL JOURNAL | 1993年 / 27卷 / 4-5期
关键词：
D O I：
10.2343/geochemj.27.213
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
A simple model for equilibrium noble gases partitioning amongst solid, melt, and gas phases, and extraction of the gas (vesicles) from the system was used to study the relationships between the rate of noble gas fractionation and parameters controlling the degassing process. The following results are inferred: (i) the lower the ratio of a gas-phase volume (vesicles) divided by the volume of melt, the higher the degree of noble gas fractionation in the melt; (ii) relative excess of both lighter (Ne) and heavier (Xe) noble gases over Ar occurs providing a high solid/melt partition coefficient for Xe and a small melt fraction.
引用
收藏
页码：213 / 217
页数：5
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