. Acadian geology [microform] : the geological structure, organic remains and mineral resources of Nova Scotia, New Brunswick and Prince Edward Island. Geology; Paleontology; Geology; Geology; Geologie; Paléontologie; Géologie; Géologie. he latter dis- nce of sandy )r differences otia only the lised, though runswick the loped, and is ctaux and its lay of Fundy, t John, New system have rhis, with the iition, renders icult. Large 7, their rocks otherwise of lace in which m, is the belt lapolis valley. ocks +hat arc e of the low in the sequel 1 their dip to are hard and In following me the aspect
. Acadian geology [microform] : the geological structure, organic remains and mineral resources of Nova Scotia, New Brunswick and Prince Edward Island. Geology; Paleontology; Geology; Geology; Geologie; Paléontologie; Géologie; Géologie. he latter dis- nce of sandy )r differences otia only the lised, though runswick the loped, and is ctaux and its lay of Fundy, t John, New system have rhis, with the iition, renders icult. Large 7, their rocks otherwise of lace in which m, is the belt lapolis valley. ocks +hat arc e of the low in the sequel 1 their dip to are hard and In following me the aspect ccept in loose )f the Upper Nova Scotia. Mr Ilartt, Cornulites ISfova-Scotica, as yet seen indicate that pper Arisaig be noticed. eat thickness ) peroxide of y DEVONIAN OP NOVA SCOTIA. 499 iron, with dark coloured coarse slates, dipping S. 30° E. at a very high angle. The iron ore is from 3 to 4|^ feet in thickness. The fossils of the ironstone and the accompanying beds, as far as they can be identified, are Spirifer arenosus, Strophodonta magnljica, Atri/pa ungiiiformis, Strophomena depressa, and species oiAvicula, BellerophoHy Favosites, and Zaphrejitis, etc. These Professor Hall compares with the fauna of the Oriskany sandstone; and they seem to give indubitable testimony that the Nictaux iron ore is of Lower Devonian age. The most abundant fossil is a Spirifer as yet not identified with any de- scribed species, but eminently characteristic of the Nictaux deposits. It is usually seen only in the state of casts, and often also strangely distorted by the slaty structure of the beds. The specimens least distorted may be described as follows:—General form, semi-circular tending to semi-oval, convexity moderate; hinge-line about equal to width of shell; a rounded mesial sinus and elevation with about ten sub-angular plications on each side; a few sharp growth ridges at the margin of the larger valves. Average diameter about one inch; mesial sinus equal in width to about th
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Keywords: ., boo, bookcentury1800, booksubjectgeology, booksubjectpaleontology
