Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-23T22:43:38.265Z Has data issue: false hasContentIssue false
  • English
  • Français

Felsic plutonic rocks from the southern portion of the New Caledonian Ultramafic Belt

Published online by Cambridge University Press:  01 May 2009

K. A. Rodgers
K. A. Rodgers
Affiliation:
Department of Geology, University of Auckland, Private Bag, Auckland, New Zealand
Get access Rights & Permissions [Opens in a new window]

Summary

Granodiorite stocks were intruded into the alpine peridotites of southern New Caledonia in the Eocene following overthrusting of the ultramafics onto the sialic core of the island. Strong zoning, from mela-diorite to granodiorite, is developed in one pluton and is believed to be the result of assimilation of ultramafic and mafic rocks by the calc-alkaline magma. Evidence in favour of a consanguineous relationship between the felsic and ultramafic rocks is largely circumstantial. In their petrography, mineralogy and chemistry, the rocks show few differences from other felsic plutonics of Tertiary age in the southwest Pacific.

Type
Articles
Information
Geological Magazine , Volume 110 , Issue 5 , September 1973 , pp. 431 - 446
Copyright
Copyright © Cambridge University Press 1973

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

Avias, J. 1956. Des phénomènes de chloritisation, de serpentinisation et de feldspathiation en Nouvelle Calédonie. C. r. Séanc. Soc. géol. Fr. 16, 307.Google Scholar
Davies, H. 1971. Peridotite–gabbro–basalt complex in eastern Papua. Bull. Bur. Mine Resour. Geol. Geophys. Aust. 128, 48 pp.Google Scholar
Garnier, J. 1870. Equisse géologique et ressources minerales de la Nouvelle Calédoni Bull. Soc. Ind. Minér. 301–21.Google Scholar
Glasser, E. 1903–1904. Rapport à M. le Ministre des Colonies sur les richesses minérales de la Nouvelle Calédonie. An. Mines, 10e serie 4, 299–392, 397–536; 5, 503–621 623–93.Google Scholar
Guillon, J.-H. 1969. Données nouvelles sur la composition et la structure du Gran Massif péridotitique du Sud de la Nouvelle Calédonie. Cah. Off. Rech. scient, tech d'outre-mer, Series geologique 1, 7–26.Google Scholar
Guillon, J-H. & Routhier, P. 1971. Les stades d'évolution et de mise en place des massif ultramafiques de Nouvelle Caledonie. Bull. Bur. Rech. min. (Deuxieme Serie) Section IV, N° 2 (1971), 5–38.Google Scholar
Lacroix, A. 1942. Les péridotites de la Nouvelle Calédonie, leurs serpentines et leur gîtes de nickel et de cobalt. Les gabbros qui les accompagnent. Mém. Acad. Sci Inst. Fr. 66, 143 pp.Google Scholar
Moores, E. M. 1969. Petrology and structure of the Vourinos ophiolitic complex of northern Greece. Spec. Pap. geol. Soc. Am. 118, 74 pp.Google Scholar
Routhier, P. 1953. Étude géologique du versant occidental de la Nouvelle Calédonie entre le Col de Boghen et la Pointe d' Arama. Mém. Soc. géol. Fr. 67, 271 pp.Google Scholar
Thayer, T. P. 1960. Some critical differences between alpine-type and stratiform peridotite-gabbro complexes. Rep. int. geol. Congr., 21st, Copenhagen, 13, 247–59.Google Scholar
Thayer, T. P. 1963. The Canyon Mountain Complex, Oregon, and the alpine mafic magma stem. Prof. Pap. U.S. geol. Surv. 475C, C82–5.Google Scholar
Thayer, T. P. 1967. Chemical and structural relations of ultramafic and feldspathic rocks in alpine intrusive complexes. In Wyllie, P. J. (Ed.): Ultramafic and related rocks, pp. 222–39. Wiley, New York.Google Scholar