Table 1b. Thermal Data
from Selected Intervals of Borehole LAH, Nevada |
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Depth |
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Thermal
Conductivity |
Heat |
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Adjusted |
Adjusted |
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Range |
Lithology |
Gradient |
W m-1 K-1 |
Flow (2) |
Porosity (3) |
Conductivity (4) |
Heat Flow (5) |
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m |
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°C km-1 |
N |
<K> (1) |
mW m-2 |
% |
W m-1 K-1 |
mW m-2 |
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100-300 |
Interbedded |
76.37±.27 |
12 |
2.14±.16 |
163±13 |
37.5 |
1.32 |
101 |
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600-800 |
clay, silt and sand; |
79.35±.11 |
10 |
1.51±.06 |
120±5 |
20 |
1.25 |
99 |
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800-1000 |
increased lithification |
74.69±.12 |
13 |
1.56±.08 |
117±5 |
15 |
1.34 |
100 |
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with depth |
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1000-1200 |
Limestone, sandstone |
64.99±.32 |
12 |
1.72±.04 |
112±3 |
10 |
1.54 |
100 |
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siltstone and shale |
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1200-1400 |
Rhyolitic tuff |
55.15±.25 |
14 |
1.98±.09 |
109±5 |
7 |
1.82 |
100 |
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(1)
grain conductivities |
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(2)
heat flow calculated assuming zero porosity |
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(3)
calculated porosity assuming 7% porosity for rhyolitic tuff and constant heat
flow |
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(4)
conductivity, adjusted for calculated porosity |
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(5)
gradient x adjusted conductivity |
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