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

Abstract

The 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.

Attribution

Geological and Bioregional Assessment Program

History

The 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.