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Show THE JURASSIC SEEIES. 151 tion between them gradually fades, and the two seem to merge into one. Neither of them have yielded any determinable fossils. Nevertheless, I am convinced that the probable plane between the Jura and the Trias lies between these two sandstones. In the Uinta Mountains the Triassic sandstones have the same general features as they exhibit upon the southern flanks of the High Plateaus. Comparing the Jura-Trias section of the Uintas with that of the High Plateaus and Kaibabs, we find a concordance in the several members. Uinta Section. Feet. 1,000 Kanab Section. Calcareous, shales, limestone and gypsifer- Calcareous shales, limestone and gypsifer- Feet. 500 Massi ve, cross-bedded white sandstone... . 1,100 Massive, cross-bedded white sandstone___ 1,400 100 Thin calcareous shale.................... 50 Vermilion Cliff series ................ 1,100 Vermilion Cliff series..................__ 1,500 Upper Shina'rump shales and conglomerate. 1,000 Upper Shinarunrp shales and conglomerate. 750 Belted shales...............__............ 400 Belted shales........................... 400 Lower Shinarunrp shales.................. 300 Lower Shinarump shales................. 500 A comparison of these two sections will lead to the conviction that the white sandstone of the Kanab region is identical with that of the Uintas. But the latter has Jurassic fossils above and below it, and hence we may conclude that the former is also Jurassic, although fossils of that age are found only above it, and none of any kind either in the sandstone itself or in the thin shales below. Starting from the village of Cedar, west of the Markagunt, we find the sandstone in great force, and may trace it southward around the flank of that plateau, and thence eastward around the Paunsagunt, and beyond the Paria River. In the Kaiparowits it is wholly lost beneath the Cretaceous, but east of the Kaiparowits it reappears. It skirts the southern and eastern slopes of the Aquarius, and is grandly displayed in the Water-Pocket |