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 1100ยฐC
โฆ LIBER โฆ
Melting relations of some oceanic basalts
โ Scribed by C. E. Tilley; R. N. Thompson; P. A. Lovenbury
- Book ID
- 102225796
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 210 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0072-1050
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โฆ Synopsis
The melting relations of a group of oceanic basalts-olivinc basalts, tholeiitic to midly alkaline, and high-alumina tholciites are determined. The liquidi of these rocks follow closely the course of the temperature-iron enrichment relationship of Kilauean thoeliitic basalts, ranging from 1430ยฐC for an olivine enriched tholciite, to a tholeiite of liquidus temperature of 119o"C, the liquidus phase of the assemblages being either olivine or plagioclase.
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