The Structure and Succession at North Sydney and 

 Sydney Mines, C. B. — By Loran A. DeWolfe, M. A., 

 North Sydney. 



(Read Uth March, mi/,) 



CON'lENTS. 



Introduction— page 



Origin of paper 289 



Location of tield 290 



General stratigraphy — — 290 



Topography 290 



Shoreline phenomena 292 



Glaciation 292 



Referencfts 294 



Part I.— Descriptive Geology. 



Limestone series- 

 Classes of rocks 294 



Inland obsei vations 295 



Section along shore 295 



Succession 296 



Ironstone contact beds 297 



Millstone Grit- 

 Succession 



Conglomerates... 



Coal 



Fossil.s 



Variation in dip. 



Coal Measures — 



Contact strata 



Divergence of outcrops 



298 

 298 

 299 

 30U 

 SOU 



301 

 302 



Coal Measures— {Continued) page 



Succession 302 



Details of shore section 307 



Indian Cove seam — 308 



Section to Lloyd's cove 308 



Fossils 311 



Main seam 312 



Details of section to Cranberry Head. 312 

 Black point 316 



Part II.— Summary of History. 



Limestone series- 

 Limestone 317 



Gypsum 318 



Ironstone 320 



Millstone Grit- 



Cross-bedded sandstones 320 



Coal seams 321 



Coal Measures- 

 Alternations of strata 322 



Dynamic changes- 

 Uplift against pre-Cambrianc 322 



Absence of post-Carboniferous strata 323 



INTRODUCTION. 



Origin of paper. — The following paper is extracted from a 

 thesis accepted in part fulfillment of the requirement for the de- 

 gree of Master of Arts at Dalhousie University in 1903. The 

 field work was done during the autumn of 1902 and the folllow- 

 ing winter ; and it and the preparation of the results have been 

 conducted under the general direction of Dr. J. E. Woodman, 

 who also assisted in revising the manuscript for the press. 



[Contributions from the Science Laboratories of Dalhousie University ; Geology and 



Mineralogy.] 

 (Communicated by Dr. Woodman). 



(289) 



