Investor Presentaiton
THE DATA 1
KUTH Energy Ltd listed on the ASX in 2007 and began a systematic heat flow survey
where the cover over the granites was considered thick enough to generate high
temperatures at depth. The measurements, from a regional ~20km x 20km grid of
holes (black dots in the figure), recorded some of the highest heat flows in Australia
(max: 118mW/m²). This data was then modelled by Hot Dry Rock P/L to produce the
Lemont Inferred Geothermal Resource. The outline is the 150ºC isotherm at a depth
of 4km.
KUTh also carried out detailed aeromagnetics to better define the structure and
more gravity readings to better constrain the depth to the granite (lower figures),
plus other techniques, such as passive seismic, not pictured here. Total expenditure
by KUTH was circa $5M.
Upper Figure: Some of Australia's highest heat flow measurements were recorded over heat-
producing granites in eastern Tasmania. Modelling of these data were used to produce
Lemont's Inferred Geothermal Resource (outlined).
Lower Figures:
A. Detailed aeromagnetics with interpreted major and secondary
structures. Also showing heat flow data points (black stars) and
values.
B. Residual Bouguer gravity: Low values (cold colours) reflect the
presence of (low density) granites in NE Tasmania. Some regional
structures are also evident. These data were used to refine the
topography of the granite surface and its depth of several km.
C.
Some of the Tertiary structures described by Berry (previous slide)
can be seen in the digital terrain model (DTM).
Spa*ark Energy_22
Heat Flow
mWm-2
118
90
SEL 26/2005
80
94
103
118
96
92
70
50
A
C
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