312 TECTONIC GEOLOGY 



by Mr. F. Chapman, of the National Museum, Melbourne, to contain ReinscMa 

 australis. Further, glacial beds have lately been found near the Glossopteris- 

 bearing strata. 



This shows these strata to be obviously of Permo-Carboniferous age. In South 

 Georgia, which ajjpears to rise from the submarine ridge along the E.S.E. trends 

 from the Falkland Islands and from Staten Island,* the rocks are formed chiefly 

 of old schists, from which hitherto no determinable fossils have been obtained. 

 The Sandwich group of islands, which lie at the eastern bend of the loop where 

 it has curved first southwards, then south-westwards, trending in the direction of 

 the South Orkneys, are geologically almost unknown. They are considered to be 

 partly volcanic. Bellinghausen in 1819 witnessed an eruption of Sawadowski, 

 the most northerly of these islands.f In the South Orkneys Dr. W. S. Bruce 

 has discovered Ordovician fossils, graptolites, and phyllocarids at Laurie Island. 

 These Ordovician fossils occur in dark sills. Recently Dr. W. T. Gordon has dis- 

 covered well-preserved Archceocyathince in a lumj) of limestone dredged by Dr. W. S. 

 Bruce to the south-east of the South Orkneys. This large block was obtained from 

 a depth of 1775 fathoms in lat. 62° 10' S., long. 41° 20' W. 



The trend lines from the South Orkneys are directed towards the South 

 Shetlands, but from the latter group no fossils have yet been recorded. At Dundee 

 Island loose fragments of red jasper, determined by J. J. H. Teall to be of 

 radiolarian origin, were obtained in 1893 by Captain Robertson. J 



We now reach the mainland of Terre Louis Philippe. At Hope Bay a rich 

 Jurassic flora has been collected. 



J. Gunnar Andersson § enumerates the following fossils as identified by Professor 

 Nathorst : || — 



Species of the Equisetacece closely related to Equisetum (Equisetites) — 

 Columnare, Brongn. 

 SagenojJteris, closely related to, or possibly identical with, S. Phillipsi, 



Brongn. 

 Clado2)hehis, the type C denticulata-nebhensis-whithyensis is represented by 



several species. 

 Todites Williamsoni, Brongn. (sp. ). 

 Scleropteris. 

 Stachyiyteris. 



* Suess, however, does not consider that South Georgia lies in a continuation of Burdwood Bank 

 to tlie east of Staten Islan(i. 



t Quoted by Suess, vol. iv. p. 488. 



J Proc. Koy. Soc, Edinburgh, vol. xxii., 1898, pp. 66-70, "Notes on some Specimens of Rocks from 

 the Antarctic Regions." By A. Geikie. 



§ Bull. Geol. Instit. of Upsala, vol. vii. pp. 26-27, " On the Geology of Graham Land." By J. 

 Gunnar Andersson. 



II Comptes Rendus, June 6, 1904, " Sur la flora fossile des regions antarctiques." 



