Fossil wood

Simoneit, B.R.T., Grimalt, J.O., Wang, T.G., Cox, R.E., Hatcher, P.G. and Nissenbaum, A. (1986). Cyclic terpenoids of contemporary resinous plant detritus and of fossil woods, ambers and coals. Organic Geochemistry 10 877-889. 

IAEA-C5 Sub-fossil Wood E. Wisconsin Forest 613C, pMC IAEA... 

Staccioli G, Mellerio G, Alberti MB, Investigation on terpene-related hydrocarbons from a Pliocenic fossil wood, Holzforschung 47 339—342, 1993. 

The association of amber with lignite or other fossil woods, as well as tile beautifully preserved insects that are occasionally in it. is ample proof of its organic origin. 

Finally, the TFA method can also be applied to materials with a very low polysaccharide content. One example is milled wood lignin (MWL) containing about 1.5% polysaccharides (Figure 8). Another example is fossil wood—a protopinacea, about 180 million years old, which contained about 0.02% polysaccharides, detected by the aid of TFA hydrolysis (Figure 8). 

That the atomic weight of uranium lead is extremely variable has already been shown. In order to interpret this variability its sources must be studied both geologically and mineralogically. On the geologic side of the question the uranium ore can be divided in to three principal classes, which are sharply distinct. The definitely crystallized varieties of uraninite occur in coarse pegmatites, associated with feldspar, quartz, mica, beryl, and other minor accessories. The massive pitchblende is found in metalliferous veins, together with sulphide ores of copper, lead, iron, zinc, and so forth. As for camotite, that is a secondary mineral, found commonly as an incrustation on sandstone, and often, also upon fossil wood. There may be other modes of occurrence, but these are the most distinctive. 

One of the geologists on your team finds some fossilized wood on the planet. She attempts to find the age of the wood using carbon dating. 

Jahren A. H. and Sternberg L. S. L. (2002) Eocene meridional weather patterns reflected in the oxygen isotopes of Arctic fossil wood. GSA Today 12(1), 4-9. 

Behar F. and Hatcher P. G. (1995) Artificial coalification of a fossil wood from brown coal by confined system pyrolysis. Energy Fuels 9, 984-994. 

A combination of several different opaline materials may be found juxtaposed. For example, in fossilized wood both tridymite and crystobalite may be determined in a sample whde adjacent portions of the sample may be composed of opal-A. The silicified wood may be transparent or translucent, clear and colorless, or white, yellow, red, brown, and black, indicating inclusions of other, usually iron-containing, complexes during precipitation of the colloid or gel. The faithfully preserved structures of fossilized wood suggest that the replacement phenomena are molecule-by-molecule processes that take place under low temperamres and pressures, and require concomitant removal of nonsiliceous compounds but do not disrupt the ceUularity of the woody tissues. Alternatively, primary... 

A fossilized piece of wood is found to have 3.12 percent of the amount of carbon-14 that would be found in a new piece of similar wood. How old is the fossilized wood ... 

JR Obst, NJ McMillan, DJ Blanchette, DJ Christensen, O Faix, JS Han, TA Kuster, L Landucci, RH Newman, RC Pettersen, VH Schwandt, and MG Wesolowski. Characterization of Canadian Arctic Fossil Woods. 5th International Symposium on Wood and Pulping Chemistry, Raleigh, 1989, Poster Sessions, pp. 289-308... 

A study in which significant differences were found amongst guaiacyl lignins was the NMR comparison of MWLs isolated from fossil woods from three different... 

H., and Wesolowsky, M. F. (1991) Characterization of Canadian arctic fossil woods. In Christie, R. L., and McMillan, N. J. (eds). Tertiary Fossil Forests of the Geodetic hills Axel Heiberg Island, Arctic Archipelago, Geological Survey of Canada, Ottawa, Canada. 

Suooioio aoid— —tlS exists in amber, coal, fossil wood,... 

Succinic Acid, (CH2.COOH)2, derives its name from the fact that it occurs in amber (Latin, sucdnum). It occurs in fossilized wood, in many plants, and in the m ine of horses, goats, and rabbits. Two important acids which occur in fruits are substitution-products of succinic acid. It is usually made from amber by distillation, or by the fermentation of the calcium salt of malic acid, which is a hydroxyl derivative of succinic... 

Because all living things take in carbon from the air, either directly or indirectly, and intake stops when they die, scientists are able to gauge the approximate age of bones, fossils, wood, or anything that once lived. The method is based on the changing ratio of carbon isotopes in the material. 

Figure 7. a) Mean annual oxygen isotope composition of precipitation (i5 Op) history derived from isotope analysis of fossil wood cellulose near Brampton, Ontario, b) Hamilton Harbour bulk organic C/N ratio and cellulo.se-inferred lake water 6 0 profiles. Also shown is the i Op record for southern Ontario from... 

Ttiassic Section Peak Section Peak Vantage Hills Roberts Butte Unconformity Sandstone and conglomerate Fossil wood at Section Peak... 

The Mt. Glossopteris Formation contains fossilized leaves and related parts of Glossopteris. In addition, the formation contains fossilized wood in the form of... 

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