Geology Reference
In-Depth Information
Fig. 2
Application of the Geoheritage tool-kit to king sound and the
tide-dominated delta therein. The boxed areas in
Inset A
shows that all
categories of geoheritage are applicable in this area (Semeniuk and
Brocx
2011
). The majority of features in the area are Internationally
signi
cant
and development of spits and cheniers in speci
c portions of
Some of the key features include: an active parabolic dune
landscape, retreating on its seaward edge and encroaching
into the estuary; an interface between dunes and estuary that
is the most complex sedimentologically, hydrologically, and
ecologically in Western Australia; a stratigraphy that records
a complex Holocene sea-level history; barrier retreat that is
recorded by parallel strips of submerged beach rock; a thin
sheet of calcrete forming above the water table; and the
distinctive and complex estuarine shore stratigraphy
including calcitisation of sea rush roots under the high tidal
the coast. The features comprising the
“
geoheritage essen-
tials
of this area are shown in Table
1
. Application of the
Geoheritage Tool-kit to King Sound and the tide-dominated
delta of the Fitzroy River is shown in Fig.
2
.
The Leschenault Peninsula, a retrograding dune barrier in
south-western Australia, and its leeward estuarine lagoon,
with a variety of geological and geomorphological features
from large to small scale, and varying in signi
”
cance from
International to State-wide, provides another example of the
application of the Geoheritage Tool-kit. There are 24 geo-
logical features of geoheritage signi
at. Categorisation of the 24 geological features and evalu-
ation of their signi
cance in this area.
cance are shown in Table
2
.
