Beetaloo Sub-basin boundary

\n## **Abstract** \n The boundary defining the spatial extents of the Beetaloo Sub-basin represents the top Kyalla Formation at a depth of approximately 400 m below topographic surface. The depth to top Kyalla Formation is calculated from the interpretation of 96 seismic lines constrained by 26 wells. The spatial extent of the boundary is further constrained by potential field geophysics.\n\n\n## **Attribution** \n Northern Territory Geological Survey (NTGS) Department of Primary Industries and Resources\n\n\n## **History** \nThe Mesoproterozoic Beetaloo Sub-basin is a fully concealed sub-basin located approximately 300 km southeast of Katherine. It comprises thick successions of the Roper Group within the McArthur Basin.

## **摘要**
界定比塔尔次盆地（Beetaloo Sub-basin）空间展布范围的边界，对应地表以下约400米处的凯拉组（Kyalla Formation）顶界面。凯拉组顶界面的埋深通过解译96条地震剖面计算得到，该解译工作受26口钻井数据约束。该边界的空间展布范围还通过位场地球物理资料得到进一步限定。

## **数据归属**
北领地初级产业与资源部地质调查局（Northern Territory Geological Survey, NTGS）

## **历史背景**
中元古代的比塔尔次盆地是一处完全埋藏型次盆地，位于凯瑟琳（Katherine）东南约300公里处，隶属于麦克阿瑟盆地（McArthur Basin）内的罗珀群（Roper Group）厚层沉积序列组合。