TWT_Contour_K80_250ms
This Feature Class contains contours that depict the interpreted depth below sea level in milliseconds two-way-time (TWT) to the K80 (c. 84 Ma; Late Cretaceous; New Zealand near-base Haumurian Stage) horizon in the Northwest Province of the Atlas of Petroleum Prospectivity (namely the Taranaki, Deepwater Taranaki, and Reinga-Northland basins). For more information about the seismic horizon naming scheme used in this project please refer to: Strogen, D.P.; King, P.R. 2014. A new Zealandia-wide seismic horizon naming scheme. Lower Hutt, NZ: GNS Science. GNS Science report 2014/34. 20 p. The TWT grids, from which these contours were derived, were generated in Paradigm 2015 SeisEarth software using an adaptive fitting algorithm and a grid resolution of 1 km x 1 km. Faults have not been incorporated into the regional-scale gridding of the TWT maps in this project. The TWT grids were then exported from SeisEarth (Zmap format), checked for internal consistency in Zetaware (Trinity 4.61), edited as needed to account for gridding errors and then exported as ArcView Ascii grids, imported and contoured with Esri's ArcGIS software. Contour spacing is 250 ms. Given the considerable variability in the spacing and density of 2D seismic data over the entire NWP area the "smoothness" of the TWT maps varies accordingly. In the central Taranaki Basin, where seismic line spacing may be 5 km or less, the 1 km x 1 km grid resolution captures the geological complexity well. However, in areas of the NWP such as the Deepwater Taranaki Basin to the west and Reinga Basin in the north, seismic line spacing may be in the order of 15 to 30 km. In such areas the underlying geological complexity is only captured where seismic interpretation exists along the available 2D seismic lines. For further information on these data, please refer to: Arnot, M.J. and Bland, K.J. et al. (Compilers), 2016. Atlas of Petroleum Prospectivity, Northwest Province: ArcGIS geodatabase and technical report. GNS Science Data Series 23b.
Simple
- Date (Publication)
- 2016-12-14
- Presentation form
- Digital map
- Purpose
-
Two-way-time depth contours in milliseconds to the K80 horizon in the Northwest Province.
- Credit
-
We acknowledge the many members of GNS Science's APP and 4D Taranaki project teams, past and present, for their interpretations, comments, and inputs into developing these data. Previous GNS Science TWT mapping of the NWP has been incorporated into these data. This includes interpretation and reports by: Uruski et al. (2002, 2004, 2008); Stagpoole et al. (2009); Bland et al. (2014); GNS Science and NIWA (2014); and Bull et al. (2015). <br/><br/>Special thanks to Dr Glenn Thrasher who has provided regular guidance to the mapping team over the last 12 months. GNS Science thanks Paradigm Ltd, for use of seismic interpretation software (SeisEarth), and geological modelling software (SKUA-GOCAD), and Zetaware.com for use of Trinity software for grid QC. <br/><br/>GNS Science also thanks the many companies that over many years have provided seismic data for use in research programmes such as APP, and also to the open-file petroleum data system administered by New Zealand Petroleum and Minerals. <br/><br/>This work programme is funded by the New Zealand Government, through the Ministry of Business, Innovation and Employment's (MBIE) Energy and Minerals targeted research fund. Contract C05X1406 to GNS Science. This work is also supported by the Petroleum Basins Research (PBR) and EEZ programmes via MBIE Strategic Funding from the New Zealand Government (MBIE). Compilation of these data was led by Dr Hannu Seebeck ( h.seebeck@gns.cri.nz ; seismic mapping) and Mr Paul Viskovic ( p.viskovic@gns.cri.nz ; gridding and contouring).
- Point of contact
-
Organisation name Individual name Electronic mail address Role GNS Science
Dr Kyle Bland
Point of contact
- Maintenance and update frequency
- As needed
- Use limitation
-
Any use of these data should acknowledge GNS Science's Atlas of Petroleum Prospectivity programme. GNS Science has made all reasonable endeavours to ensure the accuracy and completeness of the product but gives no warranties and makes no representations (express or implied) as to its accuracy, completeness or fitness for purpose, or title. GNS Science accepts no liability on account of errors in any of the information and each user must rely on its own inquiries. GNS Science excludes liability for any loss, damage or expense, direct or indirect and however caused, whether through negligence or otherwise resulting from any person, company or organisation's use of, or reliance on, these data. In no circumstances will GNS Science be liable for consequential, indirect, special or punitive damages. Use of the product will be deemed to be acceptance of these terms.
- Spatial representation type
- Vector
- Language
-
eng
- Topic category
-
- Geoscientific information
- Environment description
-
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1.4959
))
- Reference system identifier
- EPSG / 2193
- Topology level
- Geometry only
- Geometric object type
- Composite
- Geometric object count
- 171
- Distribution format
-
Name Version File Geodatabase Feature Class
10.3.3
- OnLine resource
-
Protocol Linkage Name OGC:WMS
https://data.gns.cri.nz/webmaps/petroleum/wms gns:NWP_K80_TWT_contours__250_ms_interval_
Metadata
- File identifier
- 1690E1DC-6B0E-4C69-BCC1-EB2B02C392BD XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Hierarchy level name
-
dataset
- Date stamp
- 2024-06-20T02:01:25.358694Z
- Metadata standard version
-
1.0
- Metadata author
-
Organisation name Individual name Electronic mail address Role GNS Science
Dr Kyle Bland
Point of contact
