FA847193236F92F2E040CD9B21443413EnglishManager Geoscience Business SystemsDepartment of Mining and EnergyManager Geoscience Business Systems(08) 8999 5448(08) 8999 6824geoscience.spatial@nt.gov.au2020-03-13AS/NZS ISO 19115 Geographic Information - Metadata, ANZLIC Metadata Profile1.0 Northern Territory Regolith Landforms 2500K2006-01-01This dataset are depictions of the distribution and variability of surface regolith materials across the Northern Territory and its major offshore islands (small islands may not be shown because of the scale of initial interpretation) at a scale of 1:2,500,000. This dataset is a single interpreted layer of regolith landform polygons This dataset is the basis of the Regolith Map of the Northern Territory, 2006Copyright Northern Territory of Australia (Northern Territory Geological Survey) 2020. With the exception of the Northern Territory of Australia logo, other government and corporate logos and where otherwise noted, all material in this publication is provided under a Creative Commons Attribution 4.0 International licence (https://creativecommons.org/licenses/by/4.0/legalcode). You are free to re-use the work under the licence, on the condition that you attribute the Northern Territory of Australia (Northern Territory Geological Survey) and comply with the other licence terms. Disclaimer: While all care has been taken to ensure that information contained in this publication is true and correct at the time of publication, changes in circumstances after the time of publication may impact on the accuracy of its information. The Northern Territory of Australia gives no warranty or assurance, and makes no representation as to the accuracy of any information or advice contained in this publication, or that it is suitable for your intended use. You should not rely upon information in this publication for the purpose of making any serious business or investment decisions without obtaining independent and/or professional advice in relation to your particular situation. The Northern Territory of Australia disclaims any liability or responsibility or duty of care towards any person for loss or damage caused by any use of, or reliance on the information contained in this publication.English-26-10.51291382014-05-01datasetnot knownComplete0not knownThese data have been checked visually with every effort to ensure accuracy and topological consistency.0not knownField data were collected digitally using custom software designed for displaying RTMap menus and authority tables (GA's regolith database) to run on an HP IPAQ Pocket PC under a Microsoft Corp Windows Mobile 2003 second edition operating system. This device was connected to a Bluetooth GPS (Emtac) to automatically obtain GPS heights which were then corrected to heights ASL using an "N" value correction module within the custom software. The device displayed a range of selectable geocoded imagery in the field at the time of data collection to assist with registration positional accuracy and the wider interpreted regolith contexts surrounding the reference point being recorded. Point data (field site localities) were captured automatically and added into a shape file with location information written automatically to a linked attribute table. Regolith characteristics were collected for each field site and written to linked attribute tables. The data were collected using the WGS 1984 spheroid and locations stored as geodetic values in decimal degrees (8 figure mantissas lat/logs).0not knownMap attributes are derived with the assistance of regolith reference point data (field sites - with attributes taken from RTMap tables) in conjunction with information obtained from Landsat TM V7 processed and simple band combination imagery, gamma ray spectrometric imagery, geological maps, topographic and soils maps. Map units were then constructed and attributes for the units added to the digital layers in the form of a dfb file. The map unit final attributes are different from but still related to the regolith field site (reference point) attributes. 0The Northern Territory Regolith Landforms 2500K dataset has been generalised from original interpretations at approximately 1:250,000 scale, and is the fundamental basic regolith data layer with colouring applied at the regolith group level. This basic layer interpretation has made use of point data (regolith sites) collected in the field between 2003-2005 to assist with the interpretation of regolith-landforms characteristics and variability, to assist with the calibration of processed and simple band combination LandSat TM 7 imagery, gamma ray spectrometric imagery and the shuttle radar digital elevation model.