| one publication added to basket [77959] | The oceanic basalt-trachyte relation in general and in the Canary Islands
Chayes, F. (1977). The oceanic basalt-trachyte relation in general and in the Canary Islands. Am. Mineral. 62(7-8): 666-671
In: American Mineralogist. Mineralogical Society of America: Washington. ISSN 0003-004X; e-ISSN 1945-3027, more
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| Keywords |
Arachnida > Acari > Mites > Mesostigmata > Polyaspididae > Trachytes
Chemistry > Geochemistry
Rocks
Rocks > Igneous rocks > Volcanic rocks > Basalts
Topographic features > Landforms > Islands
Volcanism
Canary I. [Marine Regions]
Marine/Coastal |
| Abstract |
Abundant data from the Canary archipelago confirm an earlier suggestion based on scattered data from volcanic islands as a whole that, among published analyses of specimens from the oceanic basalt-trachyte association, trachytic materials are considerably more numerous than those of compositions intermediate between basalt and trachyte. Frequency distributions of SiO2, CaO, and Thornton-Tuttle index for the Canaries data are strikingly similar to those for the earlier worldwide collection. In the Canaries, as in most oceanic and many other examples of the basalt-trachyte association, trachyandesitic materials are probably considerably less abundant than trachytic materials. The relation is not readily explained by crystal fractionation but seems readily explicable by fractional melting. |
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