4 CONTEXTS. 



G eography — Continued. page. 



Aivt ic sloj le province 45 



Anaktuvuk Plateau 4". 



Arctic Coastal Plain 40 



Drainage 46 



Colville River . 46 



Anaktuvuk River 4S 



< asl line 48 



From Colville River to Point Barrow 48 



From Point Barrow to Cape Lisburne and beyond 49 



Geology 50 



Geological map and sections 50 



Outline of geologic history 52 



Sedimentary rock formations 55 



Paleozoic rocks 55 



Structure 55 



Skajit formation (Upper Silurian) 50 



Character and occurrence 56 



Structure 56 



Age 57 



Correlation 58 



Totsen series (Silurian) 58 



Character and occurrence 58 



Structure 59 



Age 59 



Correlation 59 



Stuver series (pre-Devonian ) 60 



Character and occurrence 60 



Structure 61 



Age 62 



Correlation 62 



Lisburne formation ( Devonian ) 62 



Character and occurrence 62 



Structure 64 



Age 64 



Correlation 65 



Distribution 67 



Fickett series 67 



Character and occurrence 67 



Structure _ 69 



Age 70 



Correlation 71 



Mesozoic rocks 72 



Corwin series (Jura-Cretaceous) 72 



Character and occurrence 72 



Structure 73 



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