Geological models for base and thickness of Carpentaria Basin derived from interpreted drillhole data for the Beetaloo GBA region

\n## **Abstract** \nThe dataset was compiled by the Geological and Bioregional Assessment Program from source data referenced within the dataset and/or metadata. Drillhole data was used to estimate the depth and thickness of the Carpentaria Basin where it overlies the Beetaloo GBA region. They were also used determine the occurrence of sand rich layers in the Carpentaria Basin. Models derived from drilhole data represent thickness and extent of Carpentaria basin sequence and overlying Cenozoic (when present). See Factsheet 6 for a comparison between AEM and drillhole data derived geological models for the Carpentaria and its implications for recharge potential. Fact sheets are available from https://www.bioregionalassessments.gov.au/gba.\n\n\n## **Attribution** \nGeological and Bioregional Assessment Program\n\n\n## **History** \nThe geological surface models were created by inteporlating point depth estimates from drillhole data using ArcGIS. Models derived from drillhole data represent the whole thickness of the Carpentaria basin sequence and overlying Cenozoic (when present). See fact sheet 5 for a comparison between AEM and drillhole data derived geological models for the Carpentaria and its implications for recharge potential. This grid was interpolated using the Natural Neighbour method.

## **摘要**
本数据集由地质与生物区域评估计划（Geological and Bioregional Assessment Program）基于数据集内部及/或元数据中引用的源数据编制而成。研究借助钻孔数据估算了覆盖于比塔罗GBA（Beetaloo GBA）区域之上的卡奔塔利亚盆地（Carpentaria Basin）的埋深与厚度，并确定了该盆地内富砂层的赋存情况。基于钻孔数据构建的模型可表征卡奔塔利亚盆地沉积序列及上覆新生代地层（若存在）的厚度与分布范围。如需对比卡奔塔利亚盆地的航空电磁（Airborne Electromagnetic, AEM）数据与钻孔数据衍生地质模型，并了解其对补给潜力的相关意义，请参阅情况说明书6（Factsheet 6）。相关情况说明书可从https://www.bioregionalassessments.gov.au/gba获取。

## **数据归属**
地质与生物区域评估计划（Geological and Bioregional Assessment Program）

## **数据沿革**
本地质表面模型通过ArcGIS软件对钻孔数据的点深度估算值进行插值生成。基于钻孔数据构建的模型可表征卡奔塔利亚盆地沉积序列及上覆新生代地层（若存在）的总厚度。如需对比卡奔塔利亚盆地的航空电磁（Airborne Electromagnetic, AEM）数据与钻孔数据衍生地质模型，并了解其对补给潜力的相关意义，请参阅情况说明书5（Factsheet 5）。本次网格数据采用自然邻域插值法（Natural Neighbour method）生成。