400 



THE GEOLOGY OF THE NEW HEBRIDES. 



By D. Mawson, B.E., B.Sc, Lecturer in Mineralogy and 

 Petrology at the University of Adelaide. 



(Plates xiv.-xxix.). 



CONTENTS. 



PAGE 



Preface 401 



Introduction 402 



Geographical Features 403 



Part I. — Sec.1. Systematic Geology 404-427 



Aneityum— Tanna— Aniwa — Futuna — Erromanga — Efat^ — Mataso 

 Monument Rock — Makura— The Cook Reef — The Shepherd 

 Islands — Epi — Pau Uma — Lopevi — Ambrym — Malekula — 

 Santo — Aoba — Aragh Aragh — Aurora. The Banks 

 Group: Vanua Lava — Mota — Valua— Pakea — The Reefs 

 Islands — Gaua — Ureparapara. The Torres Islands. 



Sec. 2. Vulcanology and Seismology 427-434 



Active, dormant, and extinct volcanoes — hot springs— earth- 

 quakes. 



Sec. 3. Mineral Resources 



Part II. — Sec.1. Detailed Geology of Efate 

 (i.) Submarine volcanic origin 

 (ii.) Coarse pumice tuffs 

 (iii.) Soapstone series 



(iv.) Agglomerates ... 



(v.) Raised reefs 



(vi.) Later basic eruptions 

 (vii.) River alluvials ... 

 Local Features— Vila — Shepherd's Hill — Meli District — Havannah 

 Harbour Tableland — Leleppa — Undine Bay District — Nguna, 

 Mau and Pele 441-446 



434 

 435 

 435 

 436 

 436 

 438 

 438 

 440 

 440 



•Sec 2. Detailed Geology of South-West Santo ... 



(i.) The earlier volcanic series 



(ii.) Miocene Lepidocyclina-Lithothamnion series 

 (iii.) Later volcanic series ... 



446 

 446 

 446 

 447 



