Other formats

    TEI XML file   ePub eBook file  

Connect

    mail icontwitter iconBlogspot iconrss icon

Report on the Geology & Gold Fields of Otago

Contents

page break

Contents.

Part I.—Geology.
Page.
Introduction 1
Section I.—Physical Geography 5
General description; Sounds; Lakes; Rivers; Plains, Mountains; Coast Line; comparison between the New Zealand and Swiss Alps; peculiarities in the Physical geography of Otago.
Section II.—Previous Observers 12
Section III.—General Geological Structure 23
Sedimentary rocks; volcanic rocks; relation between the form of the ground and geological structure; table of formations; most important points in the geology of Otago.
Section IV.—Descriptive Geology 27
Manipori Formation, p. 27.—Distribution; rocks; position of strata; thickness; age; eruptive rocks; minerals; nomenclature.
Wanaka Formation, p. 29.—Distribution; rocks; corrugations; position of strata; foliation; relation to underlying formation; thickness; eruptive rocks; minerals; nomenclature.
Kakanui Formation, p. 32.—Distribution; rocks; position of strata; relation to underlying formation; thickness; fossils; eruptive rocks; minerals; nomenclature.
Kaikoura Formation, p. 34.—Distribution; rocks; position of strata; relation to underlying formation; metamorphic action; thickness; age; fossils; contemporaneous eruptive rocks; minerals; thickness.
Maitai Formation, p. 37.—Distribution; rocks; position of strata; relation to underlying formation; thickness; fossils; age; contemporaneous eruptive rocks; nomenclature.
Putataka Formation, p. 42.—Distribution; rocks; position of strata; relation to underlying formation; thickness; fossils; age; nomenclature.
Waipara Formation, p. 44.—Horse Range; rocks; position of strata; fossils; thickness; Mount Hamilton; rocks; position of strata; fossils; relation to underlying formation; age; nomenclature. page iv
Oamaru Formation, p. 46.—Oamaru and Waitaki; Otepopo; Shag Valley; Dunedin; Tokomairiro and Kaitangata; Lake Wakatipu; Blue Spur; Southland; Preservation Inlet; relation to underlying formation; thickness; fossils; age; contemporaneous eruptive rocks; Oamaru; Dunedin; North of Blueskin; South of Dunedin; nomenclature.
Pareora, Formation, p. 57.—Distribution; rocks; position of strata; relation to underlying formation; thickness; fossils; age; contemporaneous eruptive rocks; nomenclature.
Ancient Glacier Deposits, p. 62.
Wanganui Formation, p. 64.
Pleistocene Deposits, p. 67.—Newer glacier deposits; West Coast Sounds; Waiau Valley; Wakatipu Valley; Clutha Valley; Dunedin; shore deposits; older river deposits.
Recent Deposits, p. 73.
Section V., Historical Geology 74
Eozoic and palaeozoic eras; mesozoic era; cainozoic era; glacier period.
Section VI.—Surface Geology 86
Origin of the Otago Lakes; Valley of the Waitaki; Valley of the Shag River; old lake basins of the interior; Valley of the Upper Clutha; Lake Wakatipu district; Tuapeka district; Lower Taieri and Tokomairiro district; summary.
Section VII.—Economic Geology 95
Agricultural geology; coal; peat; lignite: brown coal; coal mining; bituminous coal; coal fields; Shag Point: Green Island and Saddle Hill; Clutha and [unclear: Tokomairiro]; Wairaki; Orepuki; Preservation Inlet; bituminous shale; roofing slate; flagstones; building stones; materials capable of being polished; lime; materials for pottery, glass, &c.; grinding and polishing materials; gold; iron ores; copper ores; antimony ores; tungstate of lime; alum; retinite; water supply.
Appendix A. Bibliography 121
Appendix B. Minerals of Otago 125
Appendix C. Fauna of Otago 128
Appendix D. Altitudes of places in Otago 140
Appendix E. Analyses of rocks and minerals 146
Part II.—Gold Fields.
Introduction 155
Auriferous Reefs 156
General geological observations; grouping of the reefs; modes of opening and exploitation of the reefs; chances of prospecting for new auriferous reefs; crushing machinery and gold-saving appliances. page v
Auriferous Drifts 180
Newer drift; older drift.
Other Minerals 184
Copper ore; grey antimony; cinnabar; brown coal.
Appendix 1. Saddle Hill. Reef 191
Appendix 2. Canada Reef, Tokomairiro 193
Appendix 3. Gabriel’s Gully Reef 195
Appendix 4. Waipori Reef 197
Appendix 5. Conroy’s Gully Reef 200
Appendix 6. Bendigo Reefs 201
Appendix 7. Carrick Range Reefs 210
Appendix 8. Arrow Reefs 220
Appendix 9. Skipper’s Creek Reefs 223
Appendix 10. Rough Ridge Reefs 229
Appendix 11. Macraes Flat Reefs 232
Appendix 12. Shag Valley Reefs 233
Appendix 13. Notes on the German Step Furnace 235
Errata.—Index of Localities; General Index.
List of Plates.
Frontispiece—Milford Sound, looking west.
Plate Ia. Mount Aspiring from the Matukituki (to face page) 5
Plate I. River Terraces of the Upper Clutha (to face page) 72
Plate II. Diagram of oscillations of level in Otago (to face page) 85
Plate III. Outlet of Lake Wanaka (to face page) 91
Plate IV. Real Mackay Coal Mine, Tokomairiro (to face page) 106
Plate V. Geological Map of Otago (to face page) 152
Plate VI. Sections I. to V. (to face page) 152
Plate VII. Sections VI. to X. (to face page) 152
Plate VIII. Gold saving appliances at Clunes (to face page) 177
Plate IX. German Treppen-rost, or Step Furnace (to face page) 235
page break