Hostname: page-component-5c6d5d7d68-wpx84 Total loading time: 0 Render date: 2024-08-14T16:02:41.846Z Has data issue: false hasContentIssue false

Mineral Orientation in Some Olivine-rich Rocks from Rum and Skye

Published online by Cambridge University Press:  01 May 2009

F. C. Phillips
Affiliation:
Department of Mineralogy and Petrology, University of Cambridge.

Extract

The olivine-rich rocks have acquired a particular significance in petrogenetic discussions as a result of the growth ofthe realization of the difficulties involved in postulating the existence of anhydrous melts of corresponding composition.The belief that such rocks have originated through the local accumulation of olivine crystals, without significant remelting (Bowen, 2, p. 108; 3, pp. 133–174)1 has received added support from the experimental determination ofthe melting relationships of the olivines. The facts “seem susceptible of no other interpretation than that, when such masses become rich in olivine, they do so through the accumulation of crystals of that mineral, which remain as such and do not become a part of the liquid by remelting or re-solution” (4, pp. 394–5).

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1938

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

(1)Andreatta, C., “Analisi strutturale di rocce metamorfiche. V. Olivi-niti,” Periodico di Mineralogia, 1934, Anno V, 237253.Google Scholar
(1 a)Andreatta, C., “La formazione gneissico-kinzigitica e le oliviniti di Val d'Ultimo (Alto Adige),” Mem. del Museo di Storia Naturale della Venezia Tridentina, 1935, iii, fasc. 2.Google Scholar
(2)Bowen, N. L., “The origin of ultra-basic and allied rocks,” Amer. Journ. Sci., 1927, xiv, 89108.CrossRefGoogle Scholar
(3)Bowen, N. L., The Evolution of the Igneous Rocks, Princeton, 1928.Google Scholar
(4)Bowen, N. L., and Schaiber, J. F., “The problem of the intrusion of dunite in the light of the olivine diagram,” Rep. XVI Internal. Geol. Congress, Washington, 1933, pp. 391–6.Google Scholar
(5)Ernst, T., “Olivinknollen der Basalte als Bruchstücke alter Olivinfelse,” Nachr. Oes. Wiss. Göttingen, 1935, Math.-Pkys. Kl., N.F., 1, 147154.Google Scholar
(6)Ernst, T., “Tiefeinschlüsse der Basalte,” Geol. Rundschau, 1936, xxvii, 73–4.CrossRefGoogle Scholar
(7)Ernst, T., “Der Melilith-Basalt des Westberges bei Hofgeismar, nördlich von Kassel, ein Assimilations-produkt ultrabasischer Gesteine,” Chemie der Erde, 1936, x, 631666.Google Scholar
(8)Harker, A., “The Tertiary igneous rocks of Skye,” Mem. Geol. Surv. United Kingdom, 1904.Google Scholar
(9)Harker, A., “The geology of the Small Isles of Inverness-shire,” Mem. Geol. Surv. Scotland, 1908.Google Scholar
(10)Harker, A., Metamorphism, London, 1932.Google Scholar