431 



A CONTRIBUTION TO THE GEOLOGY OF YITI 

 LEVU, FIJI. 



By W. G. Woolnough, D.Sc, F.G.S., Assistant Lecturer in 

 Geology and Mineralogy, University of Sydney. 



Contents. 



Page. 



Introduction ... .... .. ... ... ... ... 431 



Narrative 433 



Summary of Eesults of Former Expedition 435 



Geological Observations... ... ... ... ... ... 436 



Plan of Subdivision 436 



i. — Rewa District ... ... ... ... ... ... 436 



ii. — Medrausucu Range 440 



iii. — Upper Waidina and Waimanu Valleys .. ., 444 



iv. — Wainivalau Valley 447 



v._Waiqa Valley 450 



vi. — Navua-Wainikoroiluva Valley 452 



vii. — Wainimala Valley 455 



viii. — Wailoa-Nadarivatu District ... ... ... ... 460 



ix. — Muanivatu District 463 



X. — Navosa Plateau 466 



xi. — Nadrau-Rewasau Section 467 



Summary 468 



Conclusion 472 



Introduction. 



Id January and February, 1901, at the suggestion of Professor 

 J. W. Judd, F.R.S., and with Professor David's permission, I 

 spent about six weeks in exploring geologically the central por- 

 tion of Viti Levu, the main island of the Fiji Group. The results 

 of that expedition were published in the Proceedings of this 

 Society(Vol. xxviii.l903,pp.457-496, 500-540, Plates xxii.-xxxvi.). 



Note.— I have given all names as they are spelt in Fiji because of the 

 difficulty I have had in getting natives to locate places if the spelling is 

 Anglicised i The language is phonetic; the vowels have the French values, 

 double vowels are true diphthongs. Of the consonants b = nib, c = th (as in 

 that), d = nd, g==ng (soft), q = ng-g (hard). The accent in simple words is 

 usually on the penultimate, sometimes on the last syllable. 



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