This section summarises the conceptual geological and hydrogeological understanding of deep and shallow rock units in the and how they interact with each other, building on knowledge reported in companion products 1.1, 1.2, 1.5 and 2.1-2.2 (Rassam et al., 2014 McJannet et al., 2015; and Raiber et al., 2016, respectively). It describes the between deep and shallow systems as well as their interaction with the surface water system, thus highlighting the possible pathways through which may ultimately be impacted by potential coal seam gas (CSG) developments in the bioregion. Section 2.3.5 discusses specific in the of CSG operations.
Open-cut coal mine operations have occurred in both the Queensland and NSW parts of the Clarence-Moreton bioregion. However, coal mines in north-eastern NSW were generally small operations and have closed decades ago. As of early 2016, there is only one operational coal mine (Jeebropilly Mine) in the Clarence-Moreton bioregion in Queensland. The analysis of the for the Clarence-Moreton bioregion (Section 2.3.4) suggests that based on current information no new coal mines are expected in this area in the foreseeable future. CSG development is likely to be restricted to the Richmond river basin of north-eastern NSW (Figure 6 and Figure 7) (Section 2.3.4; companion product 1.2 for the Clarence-Moreton bioregion ). Hence, the model developed to predict potential of CSG on water-dependent assets (described in companion product 2.6.2 of the Clarence-Moreton bioregion ) only focuses on the Richmond river basin in the Clarence-Moreton bioregion.
This section therefore focuses on the geological, hydrogeological and hydrological characteristics of the Richmond river basin to support the development of the groundwater model. However, many of the presented for different geological units in the Richmond river basin are applicable across other parts of the Clarence-Moreton bioregion such as the adjoining Logan-Albert river basin, the Lockyer Valley and the Brisbane river basin (Figure 6) due to geological similarity. Such similarities across different parts of the Clarence-Moreton bioregion in NSW and Queensland mean that conceptual models developed by the Queensland Department of Environment and Heritage Protection for south-east Queensland, available on their Interactive WetlandInfo website , can be adopted for this (BA). Combining those pictorial conceptual models with the two-dimensional and three-dimensional representations of the Richmond river basin underpin the current conceptual understanding of how different components of the hydrological cycle interact.
A three-dimensional geological model was developed for the entire Clarence-Moreton bioregion.
Product Finalisation date
- 2.3.1 Methods
- 2.3.2 Summary of key system components, processes and interactions
- 2.3.3 Ecosystems
- 2.3.4 Baseline and coal resource development pathway
- 2.3.5 Conceptual modelling of causal pathways
- Contributors to the Technical Programme
- About this technical product