Early Cretaceous Aptian charcoal from Xinchang Petrified Wood National Geopark of Zhejiang province, eastern South China
MetadataShow full item record
We report on the distribution and character of fossil charcoal found in the Lower Cretaceous Guantou Formation in the Xinchang Petrified Wood National Geopark, eastern South China. All charcoal fragments studied so far exhibit well-preserved anatomical features of Araucarioxylon, consistent with the taxonomic classification assigned to this geopark’s widely known silicified tree trunks. Homogenized cell walls and high vitrinite reflectance values of charcoal particles, and the synchronous presence of tuffaceous deposits within the associated sequence, suggest that charcoal in the Xinchang Geopark may have mainly formed under conditions of complete exclusion of air by entombment in hot pyroclastic flows. Scattered charcoal fragments in several sandstone beds overlying the lahar sediments and locally high concentrations of fragments on channel-scoured surfaces are consistent with postformation reworking and transport of charcoal material.Zircon U–Pb SHRIMP dating of the volcanic interbeds of the Guantou Formation and underlying units define an age of Early Cretaceous (Aptian) for the charcoal. Both the fossil charcoal and associated petrified wood within the Guantou Formation may have an intimate genetic relationship with synchronous volcanism in the Xinchang Basin, eastern South China.
Showing items related by title, author, creator and subject.
Mechanism of decomposition of aromatics over charcoal and necessary condition for maintaining its activityHosokai, S.; Kumabe, K.; Ohshita, M.; Norinaga, K.; Li, Chun-Zhu; Hayashi, J. (2008)Decomposition of mono- to tetra-aromatics over charcoal was investigated under conditions such as temperature; 700–900 °C, inlet concentrations of aromatics, steam and H2; 7.5–15 g/Nm3, 0–15.5 vol% and 0–15.5 vol%, ...
Wolf, M.; Lehndorff, E.; Wiesenberg, G.; Stockhausen, M.; Schwark, Lorenz; Amelung, W. (2013)Production of charcoal has accompanied human life from the beginning. We aimed at evaluating the degree to which the chemical signatures of charcoal may serve as a fingerprint for burning conditions. After a compilation ...
Chemical and structural evaluation of activated carbon prepared from jute sticks for Brilliant Green dye removal from aqueous solutionAsadullah, Mohammad; Asaduzzaman, M.; Kabir, M.; Mostofa, M.; Miyazawa, T. (2010)Activated carbons have been prepared from jute sticks by chemical activation using ZnCl2 and physical activation using steam for the removal of Brilliant Green dye from aqueous solution. The activated carbons and charcoal ...