vi CHAPTER V Historical geologysercjcce crs eis ee erate tote etevehekey bet skstelecoveie fol etotey= tel tone eeneneete he Retr aesea Generalistatement iris csciccicicirecci asic coarse os ekefe soesere cl eeaielataheesele polat ote atte anata Rett AntoldsProterozoick (\?)) sbASCHAEN Uy erarelereiteterctel= eteleretete ye teletedelane tater stelelatstehet stetetetetere AEP eyo): laasy OG AGES EERE en uD bo malo poomoduone snbeloodowmosuad UpperkEriassiomarine;expanslon siete teciete eter relaxer che tetet ats terete tee terete) ares Late:'Triassic: emergence rsc.cs'2 jessie so sine inns ince fale os verte hee are edo i vaten stare tole Orbe SULASSIC! SEAS = spas eres b eae cee Taek eae otaee aiuto (ee eed ol Sas eae eke SUES aT ed ewe Aticellaiseas eee ess Fs i tce Ben ees a de ea orcas tre eee Cretaceousilands*and!seas tia. c ic se asics ole Ce cietartos ieee te eererse eoepra= Variable geographic outlines of Lower Cretaceous time................. General statement, p. 131; possible emergence in middle Lower Cre- taceous time, p. 131; Gething alluvial plain, p. 132; Luscar sea, p. 132; marine invasions from the north, p. 132; outlines of deltas in middle Fort St. John time, p. 133; late Fort St. John marine sands, p. 133. Upper Cretaceous geographic outlines...............0:cee cece eeeee eee General statement, p. 134; marginal alluvial plain in the northwest, p. 134; middle Upper Cretaceous marine expansion, p. 134; eastern advance of the delta plains, p. 134. SourceiofiCretaceousisediments ss... sete tee een ee ee Rocky, Mountaintrey olution: siretctrrs aie eee Terth ary: epee ectaae ae eat ee TS ee eT Denudationsir eis eae ete went ee cere eee eS a ee I DI-)o)0's 11 (6) | ies eincreeN RN Siren SRN OA A eA em ans cue eo Mc Eiconomye/geologyne sceneries tists Neo ore ee een Introductorystatementachiens crea nd. achat fed EE ee Placeradepositsie vsti, ai