. Manual of the geology of Ireland. e shore ofValentia river, obscure plant-like markings in purpleslates on the south side of Beginish, and on the shoreopposite Puffin Island. On the west side of Coomasa-harn Lake, SE. of Kells, are plant stems, some of theman inch and a half in diameter, and irregularly ribbed in alongitudinal direction ; and farther eastward rude and im-perfect plant stems, observed by Du Noyer, who states thatthe most perfect are in the Owenreagh valley north ofWindy Gap. Ripple-marks are extremely common onthe surfaces of the beds, often running in different direc-tions o
. Manual of the geology of Ireland. e shore ofValentia river, obscure plant-like markings in purpleslates on the south side of Beginish, and on the shoreopposite Puffin Island. On the west side of Coomasa-harn Lake, SE. of Kells, are plant stems, some of theman inch and a half in diameter, and irregularly ribbed in alongitudinal direction ; and farther eastward rude and im-perfect plant stems, observed by Du Noyer, who states thatthe most perfect are in the Owenreagh valley north ofWindy Gap. Ripple-marks are extremely common onthe surfaces of the beds, often running in different direc-tions on adjoining surfaces. The rocks in the tract now being described lie in com- 54 Geology of Ireland. plex anticlinal curves, the main axes having a general-bearing of about N. 300 E. ; the synclinal curves being inthe valleys now occupied in part by the Kenmare river,and the other bays to the southward. The accompanyingsection gives the general features of these curves, leavingout the minor flexures, while it shows the unconformable. \CoaL Treasures\JjvmestoThe, ^^===zCarboniferousShaJLs \%*t\T)irigle ot> ** -. • * 1 il OtdJRedLScaidstorte Oterujari/F Grife Diagrammatic section of the Cork and Dingle rocks, showing the unconformability of the latter. overlie of the Lower Carboniferous sandstones, limestonesand shales upon the Dingle or GlengarifT grits as theselatter beds occur in the Dingle promontory. The rocks in the Iveragh and Dunkerron promontoryare cut off to the north and north-east by the great faultthat extends from Dingle Bay through the Killarney valley,and eastward along the valley of the Flesk and the Black-water and the continuation of the valley eastward toDungarvan. This fault to the south of Castlemaine Har-bour, as also farther eastward in the valley of the Flesk,brings down the Coal Measures nearly against the Glen-garifT grits. 55 Old Red Sandstone (Griffith). These rocks are usually of red and purplish colours,consisting of grits, gritty-slates, and sl
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Keywords: ., bookcentury1800, bookdecade1870, bookpublishe, booksubjectgeology
