a—2c

Session 11. 1921. NEW ZEALAND.

MINES DEPARTMENT: GEOLOGICAL SURVEY BRANCH (FIFTEENTH ANNUAL REPORT (NEW SERIES) OF THE).

Laid on the Tabic of the House of Representatives by Leave.

CONTENTS. PAGE p AGE Letter of Transmittal .. .. .. .. 2 5. Picton Coal (by G, P. Morgan)— continued. Reported Coal-occurrences .. .. 14 Director's Report. Sections illustrating Coal-measures, &c. .. 15 Summary of Field Operations .. .. .. 2 Faulting .. .. .. .. 15 Progress of Areal Survey .. .. .. 2 Prospeeting-prmciples .. .. .. 16 Huntly-Kawhia Subdivision .. .. ..2 Future Prospecting for Coal .. ..17 Whangarei and Bay of Islands Subdivision .. 3 Minerals other than Coal .. .. ..17 Tokomaru Subdivision .. .. .. ..3 Graphite .. .. .. ..17 Tangarakau Subdivision .. .. .. 3 Cement Materials .. .. .. 18 Pateontological Work .. .. .. .. 3 Gold .. .. .. .. .. 18 Publications .. .. .. .. ..3 Antimony .. .. .. ..18 Office-work, &c. .. .. .. .. 4 Map .. .. .. .. .. 18 Library .. .. .. •. .. 4 Conclusion .. .. .. .. 18 Objects of Geological Survey .. .. .. 4 6. Oil-seepage near Ward, Marlborough (by P. G. Morgan) .. .. .. ..18 Special Reports. 7< Talisman Mine, Karangahake (by J. Henderson) 19 1. Kawhia Subdivision (by J. Henderson and L. I. 8 - Alexander River Reefs, Rcefton Goldfield (by Grange) 5 P.G.Morgan) 20 Introduction 5 r^ tua r tlo , n 20 Physiography and Structure .. ..5 -iv £ „?> , 2 1 General Geology 5 JftPf T \S I 1 Economic Geology 6 MuUocky Creek Lodes 22 2. Whangarei and Bay of Islands Subdivision (by Other Lodes 22 I. T. Ferrar and W. H. Cropp) .. .. 6 ?5° era J ltemarkf > 22 Field-work and Area surveyed .. ..6 Q Qf Adde " du ™ , ■' , " m '•. "22 Summary of Geology 7 9 ' Sto ™*°L Harbour-works, New Plymouth (by Age and Correlation of the Sedimentary Rocks 7 ~ _*. ». Morgan) . .. ..23 Economic Geology 7 la Supposed Lignite at Umutaoroa, near Dannevirke Coal 8 (by P. G. Morgan) 24 Other Minerals 8 11- Waipatilo Oil-well near Weber (Summary of goils g Report by P. G. Morgan) .. .. .. 25 3. Preliminary Report on the Tokomaru Subdivision 12 - Supposed Coal-measures, Lamb Valley, near (by M. Ongley and E. 0. Macpherson) .. 8 Glenliope (Summary of Report by P. G. Introduction . 8 Morgan) .. .. .. .. 25 Resume of Field-work 8 13 - Supposed Oil-shale, near Mangonui, North Auck1. Oil-indications 8 land (Summary of Report by HT. Ferrar) .. 26 2 Oil zones 9 Oamaru Harbour Board District (Summary of 3. OiLsands '.'. '.'. '.'. i) Re P ort b y lL Warwick) 20 4. Structure .. .. .. .. 9 4. Tangarakau Coalfield, North Taranaki (by P. G. MAPS - Morgan) .. .. .. .. .. 10 1. Sketch-map of Picton Coalfield .. facing 18 5. Picton Coal (by P. G. Morgan) .. ..II 2. Sketch-map of Alexander River District, showing Introduction .. .. .. ..11 Quartz Lodes, &c. .. .. facing 19 Recent Observations .. .. .. 13 I—C. 2c.