Other
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983gecoa..47.1075r&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 47, Issue 6, pp.1075-1090
Other
3
Scientific paper
The distributions of a series of structurally related C 25 and C 30 biogenic alkenes in sediments of the Narragansett Bay estuary have been determined. The suite of alkenes detected differs both quantitatively and qualitatively from those previously reported in other estuanne and coastal regions. Four C 25 mono- and dienes and one C 30 diene comprise 73-91% of the total alkenes in all surface (upper 2.5-5 cm) sediments analyzed. However, significant geographic variations exist in the relative abundance of these five compounds throughout the estuary. A comparison of alkene concentrations with 13 C of the bulk sedimentary organic matter has shown that the geographic variations of some alkenes reflect the distribution of marine organic matter, suggesting a marine source for these compounds. The distributions of other alkenes are not similarly correlated. In particular, concentrations of the C 30 diene are relatively constant and exhibit no dependence on the origin of organic matter in these sediments. This distribution implies an in situ production of this alkene throughout the estuary. Analysis of several sediment cores reveals that alkene concentrations are generally highest at the surface and decrease to low, constant values within the upper 25 cm. An exception is the subsurface concentration of one C 25 diene, which exhibits an increase at the same depth in two separate upper bay cores.
Quinn James G.
Requejo Adolfo G.
No associations
LandOfFree
Geochemistry of C 25 and C 30 biogenic alkenes in sediments of the narragansett bay estuary does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Geochemistry of C 25 and C 30 biogenic alkenes in sediments of the narragansett bay estuary, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Geochemistry of C 25 and C 30 biogenic alkenes in sediments of the narragansett bay estuary will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1506924