Hkxdkksox. — Coalfields of West NeUori. 299 



"into two portions — that lying between the Aorere and Wanganui faults 

 and resting on a northern extension of the Whakamarama earth-block, 

 and that lying to the west of the Wanganui fault and fringing the coast 

 as far south as the Big River. Only the edge upturned by the Wanganui 

 fault of this, the Wanganui subfield, occurs above sea-level. The com- 

 position of the coal of the Wanganui section is shown in analyses 1 and 2, 

 Table C, while analyses 3, 4, and 5 indicate the composition of the coals of 

 the Pakawau section. Coal has been worked at West Wanganui, Pakawau, 

 and Puponga. The seams appear to be numerous, and up to 8 ft. in thick- 

 ness. 



The Taitapu* Coaltield occupies the floor of Golden Bay, and the coal 

 measures, extensively faulted, extend southward along the valleys of the 

 Aorere and Takaka. The seams have been worked only at Motupipi, and 

 are there up to 4 ft. in thickness. Analyses 6 and 7, Table C, show the 

 composition of the coal. 



The Whakatuf Coalfield is limited by the Motueka, Sherry, and alpine- 

 overthrust faults. It extends beneath the Moutere gravels in the valley of 

 the Motueka, and beneath the waters of Blind Bay and part of Tasman 

 Bay. Coal outcrops at various points in the Motueka Valley, in the Tadmor, 

 at Big Bush, and near Nelson, while carbonaceous shales occur in D'Urville 

 Island. Coal has been worked near Nelson, and reaches up to 11 ft. in 

 thickness, but is here crushed by the alpine overthrust. The composition 

 of the coals is shown by analyses 8, 9, and 10, Table C. 



The KawatiriJ Coalfield occupies the Kawatiri depression. It is divided 

 into three parts by the Motueka and Tutaki faults. Of these, the most 

 important is the central, or Mangles, section, in which the coal is mined 

 for local requirements at Longford and the Owen. The Matiri and Glen- 

 roy subfields are northern and southern continuations respectively of the 

 Mangles section. The seams of the Kawatiri Coalfield range up to 30 ft. 

 in thickness. Their composition at various points is shown by analyses 11, 

 12, and 13, Table C. 



The Oweka§ Coalfield occurs in the basins of the Inangahua and Grey 

 Rivers, and probably extends as far south as Ross, beneath the flats of the 

 Taramakau and Hokitika Rivers. The main central portion of the field 

 lies in a trough between the Inangahua and Mawhera faults, and stretches 

 from Inangahua Junction to Ross. A series of outliers cap the hills to 

 the east from Larry's Creek to Big River, and again near Lake Kanieri. 

 These outliers are not so deeply foundered as the main portion of the coal- 

 field. The seams of this field range up to 60 ft. in thickness, and have been 

 worked at several points near Reefton. Analyses 14, 15, 16, 17, 18, 22, 23, 

 and 24, Table C, indicate the composition of the coals. 



* Hochstetter : '^ New Zealand,"' p. 4(51. Park : Geol. Surv., No. 20, pp. 238-41. 

 Mackay: Papers and Pv,eports relating to Mining, 1896, C.-ll, pp. 13-21. Bell: N.Z. 

 Geol. Surv. Bull. No. 3 (n.s.), pp. 49-61. 



t Hochstetter : ''New Zealand,'' p. 461. Mackay: Geol. Surv., No. 12, pp. 120, 

 121, 129, 130; Papers, &c., relating to Mining, 1896, C.-ll, pp. 27-30. Park: Geol. 

 Surv., No. 19, p. 80. 



tCox: Geol. Surv., No. 16, pp. 5-9. Park: Geol. Surv., No. 19, pp. 79, 80. 

 Mackay : Geology of S.W. Nelson, pp. 57, 59, 61. 



§ Mackay : Geol. Surv., No. 15, pp. 140-50 ; Geology of S.W. Nelson, pp. 57-61. 

 Cox : Geol. Surv., No. 10, pp. 78-80. Bell : N.Z. Geol. Surv. Bull. No. 1 (n.s.), pp. 78-81. 

 Morgan : N.Z. Geol. Surv. Bull. No. 6 (n.s.), pp. 102-12. Campbell : Geol. Sm-v., No. 11, 

 p. 32. 



