lower slopes and gum-topped box ( E. moluccana ) forms a woodland on colluvial slopes. Forest red
gum ( E. tereticornis ) and Moreton Bay ash ( C. tessellaris ) occur on alluvial soils. Bioregions and
subregions are necessary for determining the REs within the project area.
5.4.1. Land Zones
Land zones represent significant differences in geology and the associated landforms, soils and
physical processes and generally correspond to broad geological and geomorphological categories.
They are necessarily to determine REs within the project area. Two land zones (Table 32) are mapped
from the project area and are largely consistent with the surface geology mapping (see Section 5.2).
Table 32. Land Zones and associated geologies occurring in the project area
Land Zone
Description
Medium to coarse grained sedimentary rocks, with little or no deformation, forming plateaus,
benches and scarps. Includes siliceous (quartzose) sandstones, conglomerates and minor
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interbedded volcanics, and springs associated with these rocks. Excludes overlying Cainozoic
sand deposits (land zone 5). Soils are predominantly shallow Rudosols and Tenosols of low
fertility, but include sandy surfaced Kandosols, Kurosols, Sodosols and Chromosols.
Mesozoic to Proterozoic igneous rocks, forming ranges, hills and lowlands. Acid, intermediate and
basic intrusive and volcanic rocks such as granites, granodiorites, gabbros, dolerites, andesites
and rhyolites, as well as minor areas of associated interbedded sediments. Excludes serpentinites
12
(land zone 11) and younger igneous rocks (land zone 8). Soils are mainly Tenosols on steeper
slopes with Chromosols and Sodosols on lower slopes and gently undulating areas. Soils are
typically of low to moderate fertility.
5.5. Hydrology
The Dee River flows between the Mount Morgan Mine and the Mount Morgan township to the Don and
Dawson Rivers and then into the Fitzroy River, within the Fitzroy Basin (basin 130). The Dee River
catchment represents 0.63% of the entire Fitzroy Basin. The Environmental Protection (Water and
Wetland Biodiversity) Policy 2019 (EPP Water) is relevant to the Project with respect to the protection
of EVs and water quality objectives (WQOs). The Callide Creek Catchment Environmental Values and
Water Quality Objectives (DEHP, 2013) prescribes EVs for the Dee River and tributaries in developed
areas as follows:
Aquatic ecosystems;
•
Irrigation;
•
Farm supply/use;
•
Stock water;
•
Human Consumer;
•
Primary recreation;
•
Secondary recreation;
•
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Wulguru Technical Services Pty Ltd – Supporting Information to Amend an Environmental Authority
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