Sulfur variations in glasses from volcanic rocks: Effect of melt composition on sulfur solubility
Sulfur variations in glasses from volcanic rocks: Effect of melt composition on sulfur solubility
复制标题
火山岩玻璃中硫的变化：熔体成分对硫溶解度的影响
DOI：
10.1080/00206819409465483
复制
发表时间：
1994
影响因子：
2.6
通讯作者：
P. Wyllie
中科院分区：
文献类型：
--
作者：
M. Ducea;B. McInnes;P. Wyllie
选取了世界范围内14个火山的未脱气熔岩、浮石和熔融包裹体的主要元素和硫分析数据集，研究了成分对岩浆中硫溶解度的影响。我们对钙碱性、碱性和拉斑岩进行了分析，其变化范围为3400 ppm S。化学成分和硫浓度之间有很强的相关性：岩石的硅含量越少，碱性越强，它们能携带的溶解硫就越多。此外，岩石中的硫浓度较高，代表较少聚合的熔体。FeO和S之间的元素相关性，在拉斑岩中定义明确，在碱性熔体中不成立。组成效应至少和我们熟知的压强、温度和f（O_2）依赖性一样重要。
A worldwide data set of major element and sulfur analyses of undegassed lavas, pumices, and melt inclusions from 14 volcanic locations was selected to investigate the compositional effects on sulfur solubility in magmas. We utilized analyses on calc-alkaline, alkaline, and tholeiitic rocks, with a range of 3400 ppm S variation. There is a strong correlation between chemical composition and the sulfur concentration: the less silicic and the more alkaline the rocks are, the more dissolved sulfur they can carry. Also, sulfur concentration is higher in rocks that represent less polymerized melts. Elemental correlations between FeO and S, well-defined for tholeiites, do not hold for alkaline melts. The compositional effects are at least as important as the better-known pressure, temperature, and f(O_2) dependencies.