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(2006)Three longicones (Virgilian, Upper Pennsylvanian, Texas, USA) with a ventral marginal siphuncle, a shell wall with a nacreous layer, and a long body chamber were examined. The smallest is a 25 mm long adolescent, ...
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(2003)When using 36Cl to date very old groundwater in regional aquifer systems, knowledge of the subsurface 36Cl input into the aquifer system is essential. Although 36Cl can be produced through nuclear reactions in the subsurface, ...
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(2006)Stratigraphy, palynology, petrography, and geochemistry of the Bon Air coal from the Armfield, Dotson, Rutledge, and Shakerag mine sites of Franklin County, Tennessee suggest that Bon Air seams at all sites were small (≤ ...
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(1996)The geochemistry of late stage diagenetic replacement of pyrite by magnetite was investigated by laboratory experiments of pyrite dissolution and magnetite precipitation involving organically complexed ferric iron. The ...
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(2006)Mean contents of trace elements and ash in channel, bench-column, and dump samples of the abandoned Bon Air coal (Lower Pennsylvanian) in Franklin County, Tennessee are similar to Appalachian COALQUAL mean values, but are ...
Now showing items 1-5 of 5