Published online by Cambridge University Press: 01 May 2009
It must be admitted that first impressions are to a certain extent instinctive, and need not, therefore, be taken for more than they are worth. To do any really valuable work in such a troubled district as Assynt would require a considerable length of time. Still, after having been nearly a fortnight in the place—a fortnight in which the rainy days and the dry ones were about equally balanced —it is almost impossible to avoid forming some idea as to the respective merits of the interpretations which have been put forth. And this one is all the more apt to do in order to be able to institute comparisons with other districts of the North-West already visited in previous years.
page 392 note 1 From an examination of two hand-specimens of a white grit, or quartzite, full of the so-called “Serpulites ? Maccullochii,” Salter (see Quart. Journ. Geol. Soc. 1858, p. 381, pl. 13, fig. 31), I venture to think that their appearance is highly suggestive of crinoidal fragments.—EDIT. GEOL. MAG.
page 393 note 1 Q.J.G.S. vol. xvi. p. 217, and vol. xxxvii. p. 242.Google Scholar
page 393 note 2 Subsequent examination would lead one to suppose that porphyritic structure is more frequent in the interbedded igneous rocks of the Quartzite.
page 394 note 1 Mineralogical Magazine, No. 22, p. 43 et seq.
page 395 note 1 Rocks, Gneiss of the North-West Highlands, Proc. Geol. Assoc. vol. vi. p. 75.Google Scholar
page 395 note 2 Q.J.G.S. vol. xvii. p. 95.Google Scholar
page 396 note 1 Min. Mag. No. 20, p. 211.
page 397 note 1 Q.J.G.S. vol. cit. p. 99.Google Scholar
page 398 note 1 Q.J.G.S. vol. xvii. p. 180.Google Scholar