CONTRIBUTION TO THE GEOLOGY OF 



TASMANIA. 



SYSTEMATIC GEOLOGY 



THE PRE-CAMBRIAN. 

 (PLATES VII., VIII.) 



By L. Keith Ward, B.A., B.E. 

 (Assistant Government Geologist.) 



(Read 13th September, 1909.) 



SUMMARY OF CONTENTS: 



1. Introduction. 

 II. Previous literature. 



III. The stratigraphical succession in Tasmania. 



IV. The lithological characters of the Pre-Cambrian rocks. 



(a) Schists of aqueous origin. 



(b) Schists of igneous origin. 



V. The structural features of the Pre-Cambrian. 



Vl. The genesis, history, and present physiographical features 

 of the Pre-Cambrian in Tasmania. 



VII. The distribution of the Pre-Cambrian in Tasmania. 



VIII. Nomenclature and correlation. 



APPENDIX: 



Notes in explanation of the plates. 



Table of the Pre-Cambrian succession in North America. 



PLATES: 



I. Map of Tasmania, showing the distribution of the Pre- 

 Cambrian. 



II. Generalised sections. 



