C—9

1910. NEW ZEALAND

NEW ZEALAND GEOLOGICAL SURVEY (FOURTH ANNUAL REPORT (NEW SERIES) OF THE).

Presented to both Houses of the General Assembly by Command of His Excellency.

CONTENTS.

Page. P ai , e Letter of transmittal .. .. .. .. 2 The Retaruke Coalfield— continued. introduction .. .. .. .. ..2 Detailed description— Continued. Summary of operations.. .. .. ..2 (o.) Upper Retarake B .. 13 Publications .. :! (p.) Upper Retaruke C 13 rielu and orhee work of the Director .. .. 2 ! („ \ 2) 13 Work in the Tairua-Waihi Subdivision .. ..2 5. General Conclusions .'.' .'.' .'.' 13 Physical geography 3 Mr. P. G. Morgan, General Geologist .. .. 15 General geology 3 Narrat .i ve ... ..° .. \\ {5 vi=i+ °ti°(wlw ° gy " " ■ Summary of field-work in the Grevmouth SubdiVisit to Urcpuki . .. J yision Geologioal reconnaissance of the Mokau country ..5 T t>l • , Introduction ..5 .Physiography 15 Situation and topography 5 II. General geology 15 General geology .. .. .. ..6 III. Economic geology .. .. ..17 Economic geology .. .. .. ..7 (1.) Alluvial gold .. .. ..17 Coal .. .. .. .. 7 I (2.) Metalliferous quartz veins .. 17 Limestone and clav .. .. .. .. 8 I ( 3 ) oai •• •• •• ..18 Petroleum .. .. .. .. 8 | " (4.) Petroleum .. .. ..18 The Retaruke Coalfield .. .. .. ..9 IV. Miscellaneous resources .. ..18 1. Introduction .. .. .. ..9 Mr. E. de C. Clarke, Late Assistant-Geologist .. IS 2. Character of topography .. .. ..9 Geological survey of part of New Plymouth Sub3. General geology .. .. .. ..10 division.. .. .. .. ..19 4. Detailed description of the several coal-seams.. 10 Introductory .. .. .. ..19 (a.) Tylee's seam .. .. .. ..10 Introduction .. .. .. ..19 (A.) Invcraritv's Creek .. .. ..Ill Area dealt with ill report . . .. .. 19 (c) and (d). Longridge Nos. 1 and 2 .. 10 j Objectof survey and plan of conducting work.. 19 (c.) Paddys ('reek .. .. ..10 Previous investigations .. .. ..19 (/.j Bandy (reek .. .. .. ..11 Physiography and general geology .. ..19 (jr.) Coal Creek No. 1 .. .. ..11 Physiography .. .. .. ..19 (h.) Coal Creek No. 2 .. .. ..11 Summary of geology .. .. ..20 (».) Dandy Gully No. 1 .. .. ..11 Miocene rocks .. .. .. ..20 (;'.) Dandy Gully No. 2 .. .. ..12 Volcanic debris .. .. .. ..21 (&.) Lower Retaruke No. 1 .. .. ..12 Pleistocene and Recent deposits .. ..22 (I.) Jackson's (reek .. .. ..12 Possibilities of payable oil in the Waitara Survey (m.) Lower Retaruke No. 2 .. .. ..13 District.. .. .. .. .. 22 (n.) Upper Retaruke A .. .. ..13 Conclusion ., .. .. ..23

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