Notes on mineralogy. No. II. On the chemical composition of the granites of the south-east of Ireland / by Samuel Haughton.

  • Haughton, Samuel.
Date:
[1855]
Catalogue details

Licence: Public Domain Mark

Credit: Notes on mineralogy. No. II. On the chemical composition of the granites of the south-east of Ireland / by Samuel Haughton. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    From the Philosophical Magazinb for July 1355. NOTES ON MINERALOGY. No. II. ON THE CHEMICAL COMPOSITION OF THK GRANITES OF THE SOUTH-EAST OF IRELAND. BY The Rev. SAMUEL HAUGHTON, M.A., PROFESSOR OF GEOLOGY IN THE UNIVERSITY OF DUnHN. THE granites of the south-east of Ireland occur in the coun- ties of Dublin^ Carlow, Kilkenny, Wicklow, and Wexford, and may be divided physically into two distinct groups:— 1st. The chain of granite hills extending from Booterstown and Dalkey, co. Dublin, in a N.N.E,, S.S.W. direction, to Poul- mounty in the south of the county of Carlow, within five miles of New Ross. This granite chain has a length of 68 miles, and a breadth varying from 8 to 15 miles. 2nd. The series of granite hills occuri'ing at intervals in the slate of the counties of Wicklovv and Wexford, isolated from each other, and rising like islands through the slate. This group of granite hills lies between the main chain and the sea, and appears to be arranged in lines parallel more or less to the axis of the main chain. These granite hills are about twenty in number, and extend for a distance of 43 miles from Ballinaclash, county Wicklow, to Camarus Hill, county Wexford. Hitherto, so far as I am aware, no decisive proof of difference of geological age has been discovered between these two groups of granites; they are both newer than the Silurian slates, whicli they penetrate and metamorphose.