https://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/81425 Publications produced by the Northern Territory Geological Survey Fri, 03 Apr 2026 23:17:54 GMT 2026-04-03T23:17:54Z https://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/94617 Title: Rock property dataset of the Northern Territory Author: Eagleton, P Abstract: The Northern Territory Geological Survey (NTGS) has undertaken a Territory-wide compilation of rock property data focussing on the key properties of magnetic susceptibility, bulk density, grain density, porosity, velocity and permeability. This DIP is a compilation of rock property measurements sourced from open file company reports, core sampling reports, government publications, academic publications and new measurements made by NTGS.; In this release petrophysical data for 17 diamond drillholes were added. In 2023 NTGS started collecting propagation velocity of compressional longitudinal wave (Vp) using a handheld instrument (Surfer UK1401- Ultrasonic Pulse Velocity Tester.) The Vp is measured by timing an ultrasonic pulse over 15 cm of unbroken rock. Thu, 01 Jan 2026 00:00:00 GMT https://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/94617 2026-01-01T00:00:00Z https://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/94529 Title: Summary of results. Joint NTGS-GA geochronology project: selected samples from RODINGA 1:250 000 mapsheet, Amadeus Basin Author: Kositcin, N; Verdel, C; Hansman, R Abstract: This Record presents new Sensitive High Resolution Ion Microprobe (SHRIMP) U-Pb geochronological results from the Amadeus Basin. These results were obtained from outcrop specimens during the joint 2024-2025 Northern Territory Geological Survey-Geoscience Australia (NTGS-GA) geochronology project under the National Collaboration Framework (NCF) agreement. Ten samples were selected to investigate zircon provenance from Neoproterozoic to Devonian strata of the Amadeus Basin and to potentially aid reassignment of sedimentary units as part of NTGS's mapping activities in the eastern part of the basin. Thu, 01 Jan 2026 00:00:00 GMT https://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/94529 2026-01-01T00:00:00Z https://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/94520 Title: Warburton-Pedirka-Eromanga basins SEEBASE update Abstract: The Northern Territory SEEBASE is a regional map and grid of the depth to economic basement for petroleum systems. The SEEBASE maps the basin shape and depth by mapping major basement structures and the base of the sedimentary structures. The Warburton-Pedirka-Eromanga SEEBASE Update has redefined basement structures and tectonic events, as well as refined the depth and geometry of the overlying basin systems of the Northern Territory SEEBASE in the south east of the Northern Territory. This update was completed by Geognostics Australia Pty Ltd on behalf of NTGS. Thu, 01 Jan 2026 00:00:00 GMT https://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/94520 2026-01-01T00:00:00Z https://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/94503 Title: Stratigraphy, potential source rock and petroleum geochemistry of Western Georgina Basin, Northern Territory Author: Morris, PD Abstract: Between mid-1983 and early 1985, the Northern Territory Geological Survey (NTGS) carried out a diamond drilling program in the western portion of the Georgina Basin to elucidate the Lower and Middle Cambrian stratigraphy in areas of very poor outcrop. The program was carried out as an adjunct to the NTGS's mapping program in ELKEDRA and BARROW CREEK.; Two of the diamond drillholes, ELK6 and ELK7,7A intersected oil-stained dolostone over a number of intervals within the Middle Cambrian Chabalowe Formation (New Name, Stidolph and others, in preparation) and the Middle to Upper Cambrian Arrinthrunga Formation. Organic-rich Middle Cambrian sediments, assigned to the Arthur Creek Formation (Freeman, 1986), were intersected in drillholes ELK2, ELK3, and ELK7,7A. Organic geochemical data indicates that the Arthur Creek Formation is a good potential source for hydrocarbons.; The mapping and drilling programs carried out by the NTGS have significantly refined the Cambrian stratigraphy of the western portion of the Georgina Basin. It has been established that the Middle Cambrian sediments extend from the Dulcie Syncline NW into the 'Lander Trough' in the Wiso Basin (Bagas, 1985).; In the western portion of the Georgina Basin the Lower Palaeozoic sequence occurs over an area of approximately 3800 sq.km and reaches a thickness of at least 1500 min the axis of the Dulcie Syncline. Wed, 01 Jan 1986 00:00:00 GMT https://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/94503 1986-01-01T00:00:00Z