ISBN: 9781230164779

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 318 pages. Dimensions: 9.7in. x 7.4in. x 0.7in.This historic book may have numerous typos and missing text. Pur… Plus…

RareBooksClub. Paperback. New. This item is printed on demand. Paperback. 318 pages. Dimensions: 9.7in. x 7.4in. x 0.7in.This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1861 edition. Excerpt: . . . and Hope. In this section the upper quartz-rocks, upper limestone, micaceous and quartzose flagstones, and micaceous and gneissose flagstones represent the series of strata which form the Grampians S. Quart. Joun. Gcol. Soc. , vol. xvi. p. 220. of the Caledonian Canal, as exhibited in the sections; and the results of my observations have induced me to conclude that on the mainland the lower rocks of this section are not represented, and that we have no metamorphic rock, either in nature or arrangement, in this great area of Scotland, that can be paralleled with the fundamental gneiss of Sutherland and Ross. 10. Tlie Arrangement of the Metamorphic Rocks of the County of Donegal, ami Section of the East Side of Lough Foyh (fig. 9). --On that portion of the Irish coast which is most nearly contiguous t the south-western extension of the quartzla jpfjIL c 1 rocks and limestones of the Grampians, we have a great development of rocks of a metamorphic character. Almost the whole of the County of Donegal is made up of rocb which appertain to this series; and with them are associated phitonic masses. Of the deposits in this area the greater portion consists of gneissose strata, nearly allied in lithology to tho chloritic schists of the S. W. parts of the Grampians. These chloritic schists, which in geological maps of Ireland arc generally termed mica-slates, are subjected to great flexures. They have prevailing N. E. -S. W. strike: and, on the whole, S. E. dips are predominant. Like rocks of a similar nature, these gneissose rocks of the North of Ireland manifest themselves under such circumstances as to induce the conclusion that they occupy the higher zone amongst the deposits of this region. Beneath these gneissose rocks of. . . This item ships from La Vergne,TN., RareBooksClub<