Eromanga Basin - South Australia and Northern Territory - ARC

## **Abstract** \n\nThis dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied.\n\nThe extent of Eromanga SANT shapefile is one of a number of data files developed as part of the Australian Government funded research program entitled “Allocating Water and Maintaining Springs in the GAB”.\n\nhttp://archive.nwc.gov.au/library/topic/groundwater/allocating-water-and-maintaining-springs-in-the-great-artesian-basin\n\n## **Purpose** \n\nThe data file is used to indicate the location and understood extent of the Eromanga Basin including the bulk of the Eromanga sedimentary package, except outliers and disconnected sediments.\n\n## **Dataset History** \n\nDigital copies of seismic lines, around the western margins of the Eromanga Basin, were loaded into a Geoquest workstation for interpretation. Due to the sparcity of lines, lack of suitable ties and large distances between data sets, picks were mostly done by eye. These picks are simple and can be considered correct in the broad sense. Converting the two way time data from the Geoquest interpretation proved too erratic to be useful. Seismic time data was imported from Geoquest to Petrosys mapping system. In Petrosys, bore tops and outcrop elevations were gridded and contoured. The resulting contour maps were examined for realism and consistency and anomalous tops and areas were reviewed. This was an ongoing process. Geological trends from the seismic were incorporated, also known and inferred fault planes. An extensive series of edits and checks was undertaken until a satisfactory geological map was accomplished. That is, the contours were geologically reasonable, matched all bore and other tie points, followed trends from seismic and merged with previous data based mapping logically and smoothly.\n\n## **Dataset Citation** \n\nSA Department of Environment, Water and Natural Resources (2015) Eromanga Basin - South Australia and Northern Territory - ARC. Bioregional Assessment Source Dataset. Viewed 26 May 2016, http://data.bioregionalassessments.gov.au/dataset/66bb39ba-c29c-435e-8b32-efd305cfe887.

搜集汇总

背景与挑战

背景概述

该数据集是澳大利亚政府资助的研究计划'Allocating Water and Maintaining Springs in the GAB'的一部分，包含Eromanga盆地（南澳大利亚和北领地）的shapefile范围数据。数据集由第三方提供，以原始形式呈现，用于生物区域评估，重点关注地下水资源分配和泉水维护。