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description:
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This active fold dataset, prepared by GNS Science under contract to Canterbury Regional Council (ECan), is based on the GNS Science QMAP (Quarter-Million-scale) geological map dataset 'folds' layer. The base dataset was extracted from the QMAP 'seamless' dataset in mid-2014, and modified by the addition of three new attribute fields, and in some cases the repositioning of some folds or parts of faults, or the addition of new folds. The three new attribute fields are:KDC_name (local names for the mapped features)Certainty (see report text)Surf_form (see report text)In order to make clear the linkage between the QMAP dataset and the amended dataset prepared as part of this project, all the attributes of the QMAP dataset are retained, without modification, in these shapefiles. For this report, all amendments are contained within three additional data fields. Any newly identified foldsmapped as part of the ECan project are identifiable by the lack of any QMAP attributes. All the data have been compiled at a regional scale (1:250,000) and the locations of active folds are +/- 100 m at best, but more commonly +/- 250 m. |