Series of information sheets designed to provide landholders and local community with information regarding the activities being underatken as part of the Southern Thomson pre-competitive geoscience project, run in collaboration with the Queensland and New South Wales State Geological Surveys.

The Macquarie Barwon LiDAR survey provides elevation and photographic data over approximately 17,326 km² along the Macquarie and Barwon Rivers, north-west of Dubbo NSW. The LiDAR was captured between November 2013 and May 2014, at a nominal density of two outgoing laser pulses per square metre. Photography was captured simultaneously and provided as an ortho-rectified mosaic with a resolution of 20cm. The LiDAR was delivered in a full waveform format that retains a higher level of precision and significantly more above ground information than traditional LiDAR. A set of seamless products, including hydro-flattened bare earth terrain surfaces (DEMs), were produced to the ICSM specification. Other derived surfaces include a Digital Surface Model (DSM), Canopy Height Model (CHM) and Foliage Canopy Model (FCM). The outputs of the project are compliant with National ICSM LiDAR Product Specifications and the NEDF.

Analysis of the distribution patterns of Pb isotope data from mineralised samples using the plumbotectonic model of Carr et al. (1995) indicates systematic patterns that reflect major metallogenic and tectonic boundaries in the Lachlan and Delamerian orogens in New South Wales and Victoria. This distribution pattern accurately maps the boundary between the Central and Eastern Lachlan. The Central Lachlan is characterised by Pb isotope characteristics with a strong crustal signature, whereas the Eastern Lachlan is characterised by a variable signature. The Macquarie Arc is dominated by Pb with a mantle signature: known porphyry Cu-Au and epithermal Au-Cu deposits in the arc are associated with a zone characterised by the strongest mantle signatures. In contrast, granite-related Sn deposits in the Central Lachlan are characterised by the strongest crustal signatures. The Pb isotope patterns are broadly similar to Nd isotope model age patterns derived from felsic magmatic rocks, although a lower density of Nd isotope analyses makes direct comparison problematic. Comparison of Pb isotope data from the Girilambone district (e.g., Tritton, Murrawombie and Avoca Tank deposits) with that from the Cobar district in north central New South Wales indicates a less radiogenic signature, and probably older age, for deposits in the Girilambone district. Hence, a syngenetic volcanic-hosted massive sulphide origin for these deposits is preferred over a syn-tectonic origin. The data are also consistent with formation of the Girilambone district in a back-arc basin inboard from the earliest phase of the Macquarie Arc. From the AIG Bulletin

The coverage of this dataset is over the CoffsHarbour region . The C3 LAS data set contains point data in LAS 1.2 format sourced from a LiDAR ( Light Detection and Ranging ) from an ALS50 ( Airborne Laser Scanner ) sensor . The processed data has been manually edited to achieve LPI classification level 3 whereby the ground class contains minimal non-ground points such as vegetation , water , bridges , temporary features , jetties etc . Purpose: To provide fit-for-purpose elevation data for use in applications related to coastal vulnerability assessment, natural resource management ( especially water and forests) , transportation and urban planning . Additional lineage information: This data has an accuracy of 0.3m ( 95 CI ) vertical and 0.8m ( 95 CI ) horizontal with a minimum point density of one laser pulse per square metre . For more information on the datas accuracy, refer to the lineage provided in the data history .

The data covers an area of approximately 4000 sq km in the Namoi Valley, located around Narrabri, NSW. The LiDAR was captured by RPS Spatial in September and October 2013 with a point density of two points per square metre. The specified accuracies; 30cm vertical and 80cm horizontal, were achieved and verified through a rigorous network of check points and base stations. A set of seamless products were produced including hydro-flattened bare earth DEMs, DSMs, Canopy Height Models (CHM) and Foliage Cover Models (FCM). The outputs of the project are compliant with National ICSM LiDAR Product Specifications and the NEDF.

The Lower Proterozoic Willyama metamorphic complex and overlying Adelaidean sediments in the Caloola, Kantappa, and Torrowangee Synclinorial Zones form an area of Precambrian outcrop with notable topographic relief. Surrounding areas are the Mundi Mundi Plains to the west, the Menindee Trough to the southeast, and the Bancannia Trough to the east. Other topographic highs are formed by Precambrian and Palaeozoic rocks in the Bynguano Range to the east of the Bancannia Trough, and by Ordovician sediments in the Scopes Range which lies between the Bancannia Trough and the Menindee Trough. The WiIIyama Complex is fringed to the southeast and east by an area within which a considerable proportion of the Earths crust has anomalously high magnetic susceptibility. However, the remainder of the WiIIyama Complex is distinguished from surrounding areas by having a considerable proportion of its crustal section composed of material with anomamously low magnetic susceptibility. The Willyama Complex and overlying Adelaidean sediments form a block which is bounded by major structures, including north-trending structures to the east and to the northwest. The Redan Fault forms the major boundary of Precambrian outcrop to the southeast of Broken HiII, but shallow basement persists about another 30 km to the southeast, to the edge of the Menindee Trough. Northeast to north-northeast trends within the Willyama Complex continue beneath the southern part of the Torrowangee sediments and terminate against the north-northwest trending Euriowie Inlier - an interpreted horst structure. A north-northwest structural trend is inferred in the basement to the Caloola Synclinorial Zone. North-trending features are apparent in the Kantappa Synclinorial Zone and in the basement to the east and west of the Precambrian block. There are four persistent magnetic marker horizons within the Adelaidean sediments of the Caloola Synclinorial Zone. Magnetic horizons within other areas of Adelaidean sediments are less well developed. Pre-Adelaidean basement beneath the Caloola Synclinorial Zone is inferred to be at a depth of about 3500 m; beneath the Kantappa Synclinorial Zone it is at a depth of a few hundred metres. The magnetic basement beneath the Mundi Mundi Plain is divided by an east-west structure at 31°39S, to the south of which the basement is at a depth of about 150 m, and to the north of which the basement depth increases from 500 m to 7000 m in the north. The area of deep basement is inferred to be overlain by a thick sequence of Adelaidean sediments. An inferred intrusive body about 40 km east of Broken Hill may have been localised by the intersection of a number of major structures in this area. Magnetic basement in this area occurs at depths in the order of 150 m. This and other areas of shallow basement beneath the Mundi Mundi plain and to the southeast of the Redan Fault may have considerable base-metal exploration potential. The Bancannia Trough is usually fault-bounded on both sides. On the western side a south-southeast extension of the Nundooka Creek Fault forms the boundary of the main trough while further to the southwest a north-south structure forms the boundary of a shallower extension of the Trough. Palaeozoic sediments within the Trough reach a maximum depth of about 8000 m, and are underlain by extensive areas of andesite which are inferred to have originated from three igneous centres beneath the Trough. The Menindee Trough has a magnetic basement at a maximum depth of about 7000 m. Airborne spectrometer data delineate the major surface geological and drainage features. The outcrop area of WiIIyama Complex is well defined by above average radiation levels. The largest anomalies have been recorded within the Euriowie Inlier and over areas of reported uranium occurrences in the west of the Precambrian block.