Melting relations of some ultra alkali volcanics
Melting relations of some ultra alkali volcanics
复制标题
一些超碱性火山岩的熔融关系
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
R. Thompson
中科院分区：
文献类型：
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作者：
C. E. Tilley;R. Thompson
测定了一组超碱性熔岩的熔融关系。它们包括一系列来自刚果尼拉贡戈火山的富含黄长石和霞石（黄长石霞石）的类型和一组富含橄榄石（橄榄石霞石）的类型。
这些组合的液化温度范围从1100°C（尼拉贡戈熔岩湖的黄长石霞石）到单斜辉石霞石（单斜辉石霞石），橄榄石霞石的液化温度范围从1118°C到1300°C。
在大多数情况下，液体遵循依赖于铁富集的过程。值得注意的偏离是富含白榴石的例子。
The melting relations of a group of ultra alkali lavas are determined. They include a range of types rich in melilite and nepheline (melilite nephelinites) from the Nyiragongo volcano of the Congo and a group rich in olivine (olivine nephelinites).
The liquidi of these assemblages range from 1100°C (the melilite nephelinite of the lava lake of Nyiragongo) through the Cameroons etindite (clinopyroxene nephelinite, 1118°C to 1300°C for the olivine nephelinites.
For the most part the liquidi follow a course dependent on iron-enrichmcnt. Notable departures are examples rich in leucite.