Online Encyclopedia

Search over 40,000 articles from the original, classic Encyclopedia Britannica, 11th Edition.

DALRADIAN

Online Encyclopedia
Originally appearing in Volume V07, Page 777 of the 1911 Encyclopedia Britannica.
» Make a correction to this article.
» Add information or comments to this article.
Spread the word: del.icio.us del.icio.us it!

DALRADIAN , in See also:

geology, a See also:series of metamorphic rocks, typically See also:developed in the high ground which lies E. and S. of the See also:Great Glen of See also:Scotland. This was the old See also:Celtic region of Dalradia, and in 1891 See also:Sir A. See also:Geikie proposed the name Dalradian as a convenient provisional designation for the complicated set of rocks to which it is difficult to assign a definite position in the stratigraphical sequence (Q.J.G.S. 47, p. 75): In Sir A. Geikie's words, " they consist in large proportion of altered sedimentary strata, now found in the See also:form of See also:mica-schist, See also:graphite-schist, See also:andalusite-schist, See also:phyllite, schistose grit, See also:greywacke and See also:conglomerate, See also:quartzite, See also:limestone and other rocks, together with epidiorites, See also:chlorite-See also:schists, See also:hornblende schists and other allied varieties, which probably See also:mark sills, Sava-sheets or beds of See also:tuff, intercalated among the sediments. The See also:total thickness of this assemblage of rocks must be many thousand feet." The Dalradian series includes the " Eastern or Younger schists " of eastern See also:Sutherland, See also:Ross-See also:shire and See also:Inverness-shire—the Moine See also:gneiss, &c.—as well as the metamorphosed sedimentary and eruptive rocks of the central, eastern and See also:south-western See also:Highlands. The series has been traced into the See also:north-western counties of See also:Ireland. The whole of the Dalradian complex has suffered intense crushing and thrusting. See PRE-See also:CAMBRIAN; also J. B. See also:Hill, Q.J.G.S., 1899, 55, and G.

See also:

Barrow, loc. cit., 1901, 57, and the See also:Annual Reports and Summaries of Progress of the See also:Geological Survey of the See also:United See also:Kingdom from 1893 onwards.

End of Article: DALRADIAN

Additional information and Comments

There are no comments yet for this article.
» Add information or comments to this article.
Please link directly to this article:
Highlight the code below, right click, and select "copy." Then paste it into your website, email, or other HTML.
Site content, images, and layout Copyright © 2006 - Net Industries, worldwide.
Do not copy, download, transfer, or otherwise replicate the site content in whole or in part.

Links to articles and home page are always encouraged.

[back]
DALOU, JULES (1838-1902) 		[next]
DALRIADA

Site © 2006 - Net Industries