Adams, J.H. 1910 The geology of the Whatatutu subdivision, Raukumara division, Poverty Bay. Wellington: Government Printer. New Zealand Geological Survey bulletin 9 48 p.
Abstract: This survey comprises the survey districts of Mangatu and Waingaromia, which represent what is called the Whatatutu subdivision. This area occupies an approximately central position in the Raukumara division, and has the form of a rectangle 25 miles from east to west by 12 ½ miles from north to south. Its superficial area is thus 213.5 square miles. Its southern boundary is 16 miles north of the town of Gisborne, and its eastern boundary 10 miles west of the village of Buckley (Tolaga Bay). The Whatatutu subdivision contains the most prominent petroleum-seepage so far discovered in this part of New Zealand – namely, the oil-springs at Waitangi Hill. The work was undertaken during the field seasons of 1908-9. (auth/DG)