Hostname: page-component-586b7cd67f-rcrh6 Total loading time: 0 Render date: 2024-11-24T23:19:19.204Z Has data issue: false hasContentIssue false
  • English
  • Français

The Heavy Mineral Suites and Correlation of the Granites of Northern Brittany, the Channel Islands, and the Cotentin

Published online by Cambridge University Press:  01 May 2009

A. W. Groves
Get access Rights & Permissions [Opens in a new window]

Extract

The area studied includes the majority of the main granite masses north of the belt of Ordovician and Silurian rocks running eastwards from Quimper to around Vitré and Laval. The heavy minerals of the Channel Islands granites have already been described by the writer (1). In the present paper the work is extended to the northern half of Finistère, and the greater part of the Côtes-du-Nord, Ille-et-Vilaine, and Manche. It is confined for the most part to the granites, and comparisons are made with those of the Channel Islands in an endeavour to obtain more definite evidence as to the age of the Jersey “Newer” Granites.

Type
Original Articles
Information
Geological Magazine , Volume 67 , Issue 5 , May 1930 , pp. 218 - 240
Copyright
Copyright © Cambridge University Press 1930

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) Groves., A. W. “The Heavy Minerals of the Plutonic Rocks of the Channel Islands,” Geol. Mag., Vol. LXIV, pp. 241–51 and 457–73 (1927).CrossRefGoogle Scholar
(2) Barrois., Ch. “Le Calcaire de la Vallée du Dourdu (Finistère),” Ann. Soc. Géol. du Nord., t. lii, p. 174 (1927).Google Scholar
(3) Barrois., Ch. Carte Géologique de la France au 1/80,000me. (Marginal Notes), No. 41 (Lannion) (see Ann. Soc. Géol. du Nord., t. xxxvii, p. 205 (1908)); No. 57 (Brest).Google Scholar
(4) Lecornu., L. “Plissements Siluriens du Cotentin,” Bull. des Services de la Carte Géol. de la France, t. iv, No. 33.Google Scholar
(5) Groves, A. W. and Mourant., A. E. “Inclusions in the Apatite of some Igneous Rocks,” Min. Mag., vol. xxii, pp. 92–99 (1929).Google Scholar
(6) Leclère, A., with note by A. Bigot and Michel Lévy. Bull des Services de la Carte Géol. de la France, t. xvii, No. 113, p. 16 (1906).Google Scholar
(7) Brammall., A. “Dartmoor Detritals,” Proc. Geol. Assoc., vol. xxxix, pp. 92–9 (1928).Google Scholar
(8) Armstrong, W.. Am. Journ. Sci., ser. v, vol. ii, p. 51 (1922).Google Scholar
(9) Vandernotte, L.. “Contribution à l'Étude Géologique des Roches Éruptives, etc.,” Thèses présentées à la Faculté des Sciences, Paris, 1913 (Société Générale d'Imprimerie).Google Scholar
(10) Cayeux, L.. Contribution à l'Étude Micrographique des Terrains Sédimentaires (1897).Google Scholar
(11) Barrois., Ch. Carte Géologique de la France au 1/80,000me, No. 43 (Granville).Google Scholar
(12) Noury., Ch. “Roches des Ecréhou, des Dirouilles et des Pierres de Lecq ou Paternoster,” Bull. Soc. Jersiaise, 1892.Google Scholar
(13) Bigot, A. “Observations Géologiques sur les Îles Anglo-Normandes,” Bull. Soc. Géol. de France, 3e sér., t. xvi, pp. 412–19 (1888).Google Scholar
(14) Plymen., G. H. “The Geology of Alderney,” Bull. Soc. Guernesiaise, 1922.Google Scholar
(15) Milon., Y. “Étude Préliminaire des Calcaires Briovériens de St. Thurial,” Bull. Soc. Géol. et Min. de Bretagne, t. iv, fasc. 2, pp. 113–116 (1923).Google Scholar
(16) Ghosh., P. K. “The Mineral Assemblage of the Falmouth Granite,” Proc. Geol. Assoc., vol. xxxix, pp. 332–8 (1928).CrossRefGoogle Scholar
(17) Leech., J. G. C. “St. Austell Detritals,” Proc. Geol. Assoc., vol. xl, pp 139–46 (1929).CrossRefGoogle Scholar
(18) Chatterjee., M. “The Accessory Mineral Assemblage of the Bodmin Moor Granite,” Proc. Geol. Assoc., vol. xl, pp. 147–52 (1929).CrossRefGoogle Scholar
(19) Berthois., L. “Minéraux Lourds des Roches Éruptives et Cristallo-phylliennes de Bretagne,” Comptes Rendus de l'Acad. des Sciences, t. clxxxviii, pp. 1506–1508 (1929).Google Scholar
(20) et Mme E. Jérémine., A. Bigot Comptes Rendus, t. clxxvi, p. 221 (1923).Google Scholar