An unusual 17α,21β(H)-bacteriohopanetetrol in Holocene sediments from Ace Lake (Antarctica)
Talbot, Helen M.
Coolen, Marco J. L.
Sinninghe Damste, Jaap S.
MetadataShow full item record
Whilst investigating the intact biohopanoid (bacteriohopanepolyol, BHP) distribution in Holocene sediments from Ace Lake (Antarctica), we have identified the presence of ab- bacteriohopanetetrol in sediments aged up to 9400 years BP. To our knowledge, this is the first time that an intact polyfunctionalised BHP with the “geological” 17α,21β(H) configuration has been identified in a sediment. Previously, this structure has only been observed in species of the nitrogen fixing bacterium Frankia. Its presence here in the sedimentary environment has implications for the interpretation of hopanoid ββ/αβ ratios in the geological record.
Author Posting. © Elsevier B.V., 2008. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Organic Geochemistry 39 (2008): 1029-1032, doi:10.1016/j.orggeochem.2008.01.008.
Showing items related by title, author, creator and subject.
Late Holocene sea-surface temperature and precipitation variability in northern Patagonia, Chile (Jacaf Fjord, 44°S) Sepulveda, Julio; Pantoja, Silvio; Hughen, Konrad A.; Bertrand, Sebastien; Figueroa, Dante; Leon, Tania; Drenzek, Nicholas J.; Lange, Carina B. (2009-06-12)A high-resolution multi-proxy study including the elemental and isotopic composition of bulk organic matter, land plant-derived biomarkers, and alkenone-based sea surface temperature (SST) from a marine sedimentary record ...
Rise in frequency of surface melting at Siple Dome through the Holocene : evidence for increasing marine influence on the climate of West Antarctica Das, Sarah B.; Alley, Richard B. (American Geophysical Union, 2008-01-29)A new melt layer history from Siple Dome, West Antarctica, indicates notable late-Holocene summertime warming. Visual stratigraphic analyses of the 1004-m ice core identified 62 years with melt layers. Melting events began ...
Abrupt changes of temperature and water chemistry in the late Pleistocene and early Holocene Black Sea Bahr, Andre; Lamy, Frank; Arz, Helge W.; Major, Candace O.; Kwiecien, Olga; Wefer, Gerold (American Geophysical Union, 2008-01-12)New Mg/Ca, Sr/Ca, and published stable oxygen isotope and 87Sr/86Sr data obtained on ostracods from gravity cores located on the northwestern Black Sea slope were used to infer changes in the Black Sea hydrology and water ...