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| Titel: |
The origin of granitic magmas |
| Auteur: |
Kleeman, A. W. |
| Verschenen in: |
Australian journal of earth sciences |
| Paginering: | Jaargang 12 (1965) nr. 1 pagina's 35-52 |
| Jaar: |
1965 |
| Inhoud: |
The experimental data available are sufficient to justify a tentative diagram for the system Or-Ab-An-SiO2 at 5,000 bars Ph2o. In this diagram the SiO2-saturated plane is projected onto the Or-Ab-An face of the tetrahedron. When the normative feldspars of granitic rocks are plotted on this diagram they fall into a low-temperature trough, whereas when they are plotted on the Or-Ab-SiO2 diagram the majority fall into the Or field. Using the Or-Ab-An diagram it is possible to trace the development of granitic liquids produced by the melting of sediments and by differentiation of of basic magmas. There are two groups of granite, those formed in orogenic areas by melting or partial melting of sedimentary rocks and those formed by the differentiation of basic magmas which have assimilated siliceous sediments. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 11 van 11 gevonden artikelen
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