Henderson, J.; Bartrum, J.A. 1913 The geology of the Aroha subdivision, Hauraki, Auckland. Wellington: Government Printer. New Zealand Geological Survey bulletin 16 127 p.
Abstract: The area described in the present bulletin includes the survey districts of Waitoa, Aroha, Katikati North, Katikati, Matakana, Wairere, Aongatete, and Tauranga. The Thames and Waihi subdivisions adjoin it to the north. The subdivision contains in all about 662 square miles, and of this area about 250 square miles is hilly, in parts mountainous, and in the main densely forested. The remainder is mostly flat, in part swampy, grassed or covered with fern or low scrub. The mineral wealth of the subdivision is considerable, and at Karangahake the mining industry is in a very flourishing state. The Kauri Timber Company and the Waihi Sawmilling Company are actively cutting out the remnants of the kauri bush at the heads of the Waitawheta and Wairoa streams. The principal wealth of the district, however, lies in its wide pasture lands. (auth)