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1922. NEW ZEALAND.

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

Laid on the Table of the House of Representatives by Leave

CONTENTS. f'AOE FAOE Letter of Transmittal .. .. .. .. 1 2. Waiapu Subdivision (by M. Ongley and E. O. Maopherson)— continued. Director's Rbpoet. Physiography . . .. . . .. 0 c, »t™ i. n .. n General Geology . . .. .. .. 0' Summary of Field Operations .. . . .. 2 „.. . ~ ~ bJ ; t> i a i o o Oil-indications . . . . . . (> Progress ot Areal Survey .. . . . . 2 „ „, „.,.. . ~ T T ,-. . t-> -no v.j. • ■ o 3. Ohura Subdivision (by L, 1. Grange) .. ..7 Dargaville Subdivision .. .. .. 2 TJ i - ~7 • o vi- • ■ o Introduction .. .. .. ..7 Waiapu Subdivision . . . . . . . . z «. . , ,0, . Ohura Subdivision 2 Physiography and Structure .. ..7 Waihi Golduold 3 General Geology 7 tj i j. 11 _i i tit i <> Eoonomio Geology ... .. .. 7 Pakfiontological Work . . . . . . . . 3 „ , eJ L Publications and Manuscript Reports ... .. 3 o° /'i- ''. • i ' L „„. , „ ' ' ~ Koadmaking-material .. .. ..8 Office-work, &c " ' ' ! 4. Te Puke Goldfiold (by P. G. Morgan) .. .. 8 Offio/Ld Laboratory Accommodation '.'. '.'. 4 5> Tlle Pr , ogrOSS , Min6S ° f NeW Zealand (by J " Hen- « J derson) .. . . .. .. 9 _ 6. The Chertsey Oil-bore (by J. Henderson) .. 12 Special Beportr. r Petroleum at Waiotapu, Rotorua District (by 1. Dargaville Subdivision (by H. T. Ferrar and W, H. P. G. Morgan) .. .. .'. 13 Cropp) .. .. .. .. 4 8. Natural Gas in Hauraki Plains (by J. Henderson) 13 Introduction .. .. ... . 4 9. Mineral Resources of Whangaroi, Bay of Islands Physiography .. .. .. ..4 Subdivision (by H. T. Ferrar and W. H. General Geology.. .. .. ..4 Cropp) .. .. .. ..14 Economic Geology .. . . 6 Coal .. .. . . . . .. 14 2. Waiapu Subdivision (by M. Ongley and E. 0. Cinnabar . . . . . . .. 15 Macpherson) .. .. .. .. 5 Other Eoonomio Deposits .. . . .. 15 Introduction .. . . .. . . 5 10. Cinnabar in New Zealand (by J. Henderson) .. 15

LETTER OF TRANSMITTAL. Sir, — Geological Survey Office, Wellington, 30th June, 1922. I have the honor to transmit herewith the sixteenth annual report of the Geological Survey Branch of the Mines Department. This report covers the work of the Geological Survey for the twelve months ended 31st May, 1922. In addition to brief reports on the districts examined by the field officers, various special reports are appended. I have, &c, P. G. Morgan, Director, Geological Survey. The Hon. G. J. Anderson, Minister of Mines, Wellington.

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