Memorandums made in Ireland in the autumn of 1852 . arched form,the arch attaining its greatest height (400 feet) abovePleaskin. The strata then gradually descending, andwith a gentle curve, touch, at the distance of abouttwo miles from Pleaskin, the water line in such man-ner that the ochre bed (b) dips entirely uuder thewater, and the lower columnar range (c) is partially im-merged, a portion of it towards the land still remain-ing above the sea-level. Xow, if we conceive, that thecause (whatever it may have been) which by thefracture of the strata formed the sea cliff, broke offall the beds
Memorandums made in Ireland in the autumn of 1852 . arched form,the arch attaining its greatest height (400 feet) abovePleaskin. The strata then gradually descending, andwith a gentle curve, touch, at the distance of abouttwo miles from Pleaskin, the water line in such man-ner that the ochre bed (b) dips entirely uuder thewater, and the lower columnar range (c) is partially im-merged, a portion of it towards the land still remain-ing above the sea-level. Xow, if we conceive, that thecause (whatever it may have been) which by thefracture of the strata formed the sea cliff, broke offall the beds above the lower columnar bed, leavingthis entire, we see at once how the Causeway wasformed, it being simply the upper surface of thecolumnar bed, left bare or partially description will be rendered still clearer by adiagram representing an imaginary section of therocks. THE GIANTS CAUSEWAY. 165 The Giants Causeway proper, that is, as wenow understand it, the denuded upper surface andpartially denuded sides of the lowest stratum of. a. Amygdaloid, &c. b. Ochre bed. c. First columnar bed exposed at top. and so forming the Causeway. d. Bed of prismatic basalt. e. Upper columnar bed. /. Coping beds of greenstone, &c. g. The sea level. h. Cliff behind the Causeway. columnar basalt, as seen in Pleaskin, is, as alreadymentioned, in no wise striking as a scenic may be generally described as consisting of threecollateral piers or rocky ledges, one higher, longerand larger, the eastern; the others shorter andsmaller; each running to a point where they disap-pear under the water. The eastern margin of thelarger pier rises up boldly from the shore so as topresent a vertical columnar wall, 35 feet in height,the individual columns being perfectly distinct fromtop to bottom. This portion goes by the name ofthe loom. The central pier, which is of a pyramidalconfiguration, rises in its central part, termed thehoneycomb, to the height of 30 feet j and thesmallest or n
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Keywords: ., bookcentury1800, bookdecade1850, bookidmemorandumsm, bookyear1853
