THE ACADIAN TRIASSIC 



109 



At Folly Village, Mississippian f ossiferous limestone and 

 gypsum, belonging to the Windsor group, appear on the northwest 

 side of Debert River. The Triassic sandstones are very calcareous, 

 and resemble the Windsor limestones, as both are red in color. 

 It appears that the limestone is overlain conformably by the gypsum, 

 and that these Mississippian strata are overlain disconformably 

 by the Triassic red sandstones. With this view, the Mississippian 

 is confined to a small area on the northwestern side of Debert 

 River where fossils are readily found. 1 



Truro-Wolfville. — The end of the arm of Triassic in Minas 

 Basin lies near Truro, and the relation of these to the older rocks 



Fig. 25. — Section EE. Structure section through Minas Basin near Bass River ; 

 to show the unconformity of the Triassic on an island of Permian strata, Parrsboro 

 formation, just north of the Basin. SD, Cobequid group; UR, Union-Riversdale 

 series (Pennsylvanian) ; Pe, Permian. The major Cobequid fault is shown at the 

 south of the Cobequid group. The closely folded syncline of the Parrsboro formation 

 is in part overlain by Triassic sediments (T), which appear to be down-faulted on the 

 north. 



is an unconformity, as shown in Fig. 23. This unconformity is 

 well exposed in Salmon River and in Victoria Park Brook (where 

 there is also a fault) . The underlying Carboniferous strata always 

 show a beveled surface. This unconformity continues along the 

 south shore of Minas Basin, and may be seen at Minasville, on the 

 sides of Moose Brook (Fig. 24), at Tennycape, and at Walton. 

 Over this area the Triassic sandstones show nothing unusual, 

 except for calcitization north of Maitland. 



West of Cheverie, the first exposure of Newark rocks is at 

 Oak Island, north of Avonport (Fig. 3). On the east side of this 

 island, quartz-pebble conglomerate and sandstone are exposed, 

 overlain by stratified Pleistocene gravels, 6 feet thick, above which 

 is Wisconsin till. 



This view differs from that of J. W. Dawson, Acadian Geology, 3d ed., 1878, 



p. 99. 



