Geological contours for groundwater modelling, South Canterbury

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on the depth of Quaternary sediments, and stratigraphic picks of the minimum elevation ofthe base of Quaternary sediments at those locations is provided in the GIS dataset. None ofthe holes is deep enough to provide any useful constraint on the subsurface position of theTimaru/Geraldine basalt.A1.4 Supplementary references (not already in main report)Farmer, R.T.; McLean, J.D.; Mansergh, G.D.; Read, S.A.L. 1975: Southern CanterburyCatchment Board - proposed Tengawai, Opihi and Opuha dams. Preliminary geologicalreport. New Zealand Geological Survey Engineering Geology Report EG 212. 16 p. LowerHutt, New Zealand Geological Survey.Field, B.D.; Browne, G.H. 1986: Lithostratigraphy of Cretaceous and Tertiary rocks, southernCanterbury, New Zealand. New Zealand Geological Survey Record 14. Wellington,Department of Scientific and Industrial Research. 55 p.Gair, H.S. 1959: The Tertiary geology of the Pareora District, South Canterbury. NewZealand Journal of Geology and Geophysics 2: 265-296.Gair, H.S. 1961: Drillhole evidence of the Pliocene-Pleistocene boundary at Timaru, SouthCanterbury. New Zealand Journal of Geology and Geophysics 4: 89-97.Mutch, A.R. 1963: Sheet 23 - Oamaru. Geological Map of New Zealand 1:250,000.Wellington, Department of Scientific and Industrial Research.GNS Science Consultancy Report 2012/245 A-7
APPENDIX 2 – DESCRIPTION OF GIS DATASETSThe following Geographic Information System (GIS) datasets referred to in this report arecontained on the disk in the back pocket of the report. The datasets are in shapefile format,in terms of NZ Transverse Mercator coordinate system (NZ Geodetic Datum 2000) and weregenerated using ArcGIS version 9.3:• The extent of the project area (Project_area_poly.shp)• Stratigraphic sectors used in contouring (stratigraphic_sectors.shp)• Geological faults (geol_faults.shp)• Stratigraphic control points on structure contour elevations (stratigraphic_picks.shp)• Geophysical control points on structure contour elevations (geophysical_picks.shp)• Structure contours on top of basement rock(structure_contour_top_of_basement.shp)• Structure contours on base of Kowai Formation(structure_contour_bottom_of_Kowai_Frm.shp)• Structure contours on top of Kowai Formation(structure_contour_top_of_Kowai_Frm.shp)• Extent of basement rock outcrop and subcrop (geol_extent_poly_basement.shp)• Extent of Kowai Formation outcrop and subcrop (geol_extent_poly_Kowai Frm.shp)• Extent of Timaru and Geraldine Basalt outcrop and subcrop(geol_extent_poly_Timaru-Geraldine_basalt.shp)Refer to the body of the report for general description and characteristics of the features inthese GIS layers.GNS Science Consultancy Report 2012/245 A-8
Page 6 and 7: 20121.0 INTRODUCTIONGroundwater is
Page 8 and 9: 2012the topic of this project commo
Page 10: 2012relatively smooth, landform sur
Page 13 and 14: 2012highlight any revised interpret
Page 15 and 16: 2012sources of geological informati
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Page 26 and 27: APPENDIX 1 - DISCUSSION OF CONTOUR
Page 28 and 29: Southwards from here, the basin flo
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Geological contours for groundwater modelling, South Canterbury

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