Neyveli Lignite Corporation: Problems and Needs - Office of Fossil ...
Neyveli Lignite Corporation: Problems and Needs - Office of Fossil ...
Neyveli Lignite Corporation: Problems and Needs - Office of Fossil ...
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Comparison <strong>of</strong> <strong>Lignite</strong> deposits <strong>of</strong> Tamilnadu /<br />
Mannargudi <strong>and</strong> Powder River Basin, Wyoming, USA<br />
Ash<br />
Reflectance<br />
Gas content<br />
Parameters<br />
Depositional<br />
Environment<br />
Geological Age<br />
Depth Range<br />
Average Thickness <strong>of</strong><br />
seams<br />
Hydro-geological<br />
conditions<br />
Permeability<br />
45 m<br />
2 - 12<br />
0.35 – 0.41<br />
<strong>Lignite</strong> seams associated<br />
with aquifer zones<br />
1 - 2 m³ /t<br />
NA<br />
<strong>Lignite</strong> deposits <strong>of</strong><br />
Tamilnadu /<br />
Mannargudi<br />
Deltaic lacustrine setting.<br />
Mio-Pilocene<br />
150 –600 m<br />
<strong>Lignite</strong> <strong>of</strong> Powder River<br />
Basin, USA<br />
Deltaic lacustrine setting.<br />
Palaeocene<br />
60 –200 m<br />
30 m<br />
Low to moderate<br />
0.34 – 0.39<br />
<strong>Lignite</strong> itself act as aquifer<br />
between less permeable s<strong>and</strong><br />
stones<br />
1-74 Scft/t (0.03 – 2.3 m³ /t<br />
Very favourable 1 – 10 m/d<br />
37
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