Gippsland Balook Sand Formation Extent

## **Abstract** \n\nIt was derived by the Bioregional Assessment Programme from Figure 7 of Nicol (2010). You can find a link to the parent datasets in the Lineage Field in this metadata statement. The History Field in this metadata statement describes how this dataset was derived.\n\n\n\nThe dataset shows the mapped extent of the Balook Formation.\n\n## **Purpose** \n\nThe Balook Formation is an important sand formation in the sedimentary sequence of the Gippsland Basin, providing a conduit for inter-aquifer connectivity.\n\n## **Dataset History** \n\nThe extent of the Balook Formation was digitised from the PDF map in Figure 7 of Nicol (2010) using the polygon construction tool within ArcMap 10.2. The source map was georeferenced prior to digitising using the layers TOPO2_5M_FRAMEWORKBOUNDARIES and TOPO2_5M_ROADS (GUID: 310c5d07-5a56-4cf7-a5c8-63bdb001cd1a) to select accurate control points.\n\n\n\nCitation: Nicol, C. (2010). Report on transient groundwater flow modelling: West Gippsland CMA. Report for 'ecoMarkets' groundwater models. June 2010, Department of Sustainability and Environment,.\n\n## **Dataset Citation** \n\nBioregional Assessment Programme (2014) Gippsland Balook Sand Formation Extent. Bioregional Assessment Derived Dataset. Viewed 29 September 2017, http://data.bioregionalassessments.gov.au/dataset/615ec94a-495e-43ec-a449-9d5ff86252e3.\n\n## **Dataset Ancestors** \n\n* **Derived From** [West Gippsland CMA Groundwater Model report - Figure 7](https://data.gov.au/data/dataset/1c57ddc8-fd57-4d58-8396-8fd9809ede5e)\n\n

## **摘要**
本数据集由生物区域评估计划（Bioregional Assessment Programme）基于Nicol（2010）的图7衍生而来。您可在本元数据声明的“谱系字段（Lineage Field）”中找到父级数据集的链接。本元数据声明的“历史字段（History Field）”将说明本数据集的具体衍生过程。

本数据集展示了巴卢克组（Balook Formation）的填绘分布范围。

## **目的**
巴卢克组是吉普斯兰盆地（Gippsland Basin）沉积序列中的重要砂岩层，为含水层间的水力连通提供了传导通道。

## **数据集历史**
巴卢克组的分布范围系通过ArcMap 10.2内置的多边形构建工具，从Nicol（2010）图7的PDF地图中数字化提取得到。数字化作业开展前，已借助TOPO2_5M_FRAMEWORKBOUNDARIES与TOPO2_5M_ROADS图层（全局唯一标识符（GUID）：310c5d07-5a56-4cf7-a5c8-63bdb001cd1a）选取精准控制点，对源地图完成地理配准。

**引用文献**：Nicol, C.（2010）。《瞬态地下水流动建模报告：西吉普斯兰流域管理局（CMA）》，为"ecoMarkets"地下水模型编制的报告，2010年6月，可持续发展与环境部。

## **数据集引用**
生物区域评估计划（2014）。《吉普斯兰巴卢克砂岩层分布范围》，生物区域评估衍生数据集，2017年9月29日查阅，http://data.bioregionalassessments.gov.au/dataset/615ec94a-495e-43ec-a449-9d5ff86252e3。

## **数据集溯源**
* **衍生自** [《西吉普斯兰流域管理局地下水模型报告——图7》](https://data.gov.au/data/dataset/1c57ddc8-fd57-4d58-8396-8fd9809ede5e)