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PROCEEDINGS OF IHE GEOLOGICAL SOCIETY. [Apr. 10, 



ever, of one group (E), Mr. Meek has identified the strata from 

 fossils submitted to him by Mr. Hind. The groups in my section 

 do not perhaps truly represent successive periods in time, but rather 

 indicate the different conditions that existed in the geographical 

 areas in which they were deposited. 



Vertical section, in descending order, of the Cretaceous System, as 

 developed in British North America. 



Observed by Hind on South Saskat- 

 chewan below the Elbow. 

 Lower part of section at La Roche 



Percee ? 

 At the elbow of Battle River ? 

 Forms the high grounds cut through 

 by Long Creek and the Souri River. 

 Also at the Forked Creeks near the 

 Assineboine. 



Arenaceous clays and sandstones, 

 with Scaphites, Nautilus, Avicula, 

 and other marine Mollusc a. 

 No. 5 of Meek and Hayden. 



E 



Indurated olive-coloured shales, with 

 bands and fissures filled with clay- 

 ironstone. Leda Hindi, Ostrea 

 lugubris, scales of Ctenoid Fishes, 

 Annelide-tubes, and Plant-remains. 

 Also observed by Hind, Natica, Ammo- 

 nites, &c. 



No. 4 of Meek and Hayden. 

 D. Dark-purple and brown laminated 

 clays, with ironstone-septaria, and 

 sometimes crystals of selenite. Bacu- 

 lites, Inoceraraus, Pholadomya, Car- 

 dium, Exogyra, Astarte, Cythcrea, 

 Ammonites. 

 No. 3 of Meek and Hayden. 



C. Sandstone overlying marly clays, 

 banded with thin seams of iron- 

 stone, thin beds of limestone, stiff 

 dark-blue clay, and arenaceous 

 shales. Ostrea cortex, 0. veflicafa, 

 0. anomiceformis, Cythcrea, My- 

 tihcs, Cardium, Venus, Natica, &c. 

 Stems and roots of siUcified trees. 



B. Great lignite-group * ; sandstones 

 coarse and friable, or argillaceous 

 and concretionary, indurated shales, 

 and soft limestones, ironstone- 

 nodules, beds of lignite 3 to 10 feet 

 thick : silicified wood, Taxites, and 

 sedge-like stems in the sandstones. 

 No. 1 of Meek and Hayden. 

 Includes the Wealden (?). 



Green sandstone and conglomerate at 

 base of liguite-group at Nanaimo, 

 tufaceous sandstone-conglomerate, 

 much altered, and containing 

 Trigonia Emori, Cythcrea Leo- 

 nensis, Area (2 sp.), Psammobia, 

 Exogyra (2 sp.), Ostrea (2 sp.), 

 Rostellaria, Pecten, &c. 

 Jurassic ? 



Valley of Assineboine at Fort Ellice. 

 Elbow of South Saskatchewan, Eagle 

 Hills, and on North Saskatchewan 

 to Fort Pitt. On north slope of 

 Cypres Mountain. In the Gulf of 

 Georgia, on Vancouver's Island, at 

 Nanaimo River, Saltspring Island, 

 and at Valdez Inlet, by McKav. 



Battle River ? Hand Hills, Red Deer 

 River. 



(Not observed on west side of 

 Rocky Mountains.) 



Red Deer River, North and South 

 Saskatchewan, Athabasca, and Pem- 

 bina Rivers, &c. Nanaimo, Van- 

 couver Island, Bellingham Bay, 

 Burrard's Inlet, Gidf of Georgia, 

 &c. The position of this group is 

 not clearly made out to the east of 

 the Rocky Mountains, as the sections 

 at the first and second localities are, 

 so far as is known, contradictory. 

 The beds at Battle River, Edmonton, 

 and Lower Red Deer River may be 

 Upper Cretaceous or even Eocene. 



Fossil Point, Departure Bay, North of 

 Nanaimo in Vancouver Island. 



* It is possible that the lignite-bearing group B, which occurs in two lines 



