File:Ireland; industrial and agricultural (1902) (14764931412).jpg

Identifier: irelandindustria00irelrich (find matches)
Title: Ireland; industrial and agricultural
Year: 1902 (1900s)
Authors: Ireland. Dept. of Agriculture and Technical Instruction Coyne, William P
Subjects: Agriculture -- Ireland Lace and lace making Industries -- Ireland Ireland -- Economic conditions
Publisher: Dublin (etc.) : Browne and Nolan, limited
Contributing Library: University of California Libraries
Digitizing Sponsor: MSN

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TOPOGRAPHY AND GEOLOGY. 3 the coal-measures of Kilkenny, may be left standing out as a highland, whilean anticlinal, fractured at the top and exposed to rapid denudation, may bethe first mass to be worn away. The general trend of mountain ranges,however, is determined by the directions of the axes of their folds. Before the existence of the Cambrian fauna, which is the first well-markedassemblage of life-forms upon the globe, the still older crust had becomelocally crushed and folded, giving rise to the Huronian system of moun-tain chains. The sediments laid down in periods earlier than the Cambrianwere thus converted into gleaming mica-schists and hard flinty quartzites ;limestones became altered into crystalline marbles, and volcanic rocks intotough and dark amphibolites. Molten masses oozed into these from below,baking and often dissolving them, and giving rise, when consolidation tookplace to granites, and, more especially, to the striped and streaky type ofgranite known as gneiss

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