BULLETIN OF THE GEOLOGICAL SOCIETY OF AMERICA 

 Vol. 34, pp. 721-748 December 30, 1923 



CAMBEO-OEDOVICIAN SECTION NEAR MOUNT ROBSON, 



BRITISH COLUMBIA^ 



BY LANCASTER D. BURLING 



{Presented before the Society Deceryiher 28, 1921) 



CONTENTS 



Page 

 Introduction 722 



Generalized section, Mount Robson region 723 



Nomenclature and thickness of formations 726 



Included fossils and age relationships of formations 726 



Nomenclature of mountains and rocks exposed in each formation 726 



Contact between the Upper Cambrian and post-Cambrian (Ordovician or 



Devonian) 727 



Contact between the Middle and Upper Cambrian 729 



Contact between the Lower and Middle Cambrian 729 



Contact between the Lower Cambrian and pre-Cambrian 732 



Topographic features, with details as to synonymy and stratigraphy. .... 732 



Chetang cliff 782 



The Extinguisher 732 



Mount Hitka 732 



Hota cliff 733 



Lynx Mountain 733 



Mahto Mountain 733 



Mumm Peak 733 



"Phillips Mountain" 734 



Mount Rearguard 734 



Mount Robson 734 



Tah Mountain 735 



Tatei cliffs 735 



Titkana Peak 735 



Geologic formations, with details as to synonymy and stratigraphy 736 



"Robson limestones" 736 



Lynx formation 737 



Titkana limestones 738 



"Mumm limestones" 739 



"Hitka formation" 740 



Tatei limestones 740 



Chetang limestones 741 



1 Manuscript received by Ihe Secretary of the Society September 9, 1922. 



(721) 



