Distributions of C22-C30 even-carbon-number n-alkanes in Ocean Anoxic Event 1 samples from the Basque-Cantabrian Basin
Chaler, R; Dorronsoro, C; Grimalt, JO; Agirrezabala, LM; Fernández-Mendiola, PA; García-Mondejar, J; Gómez-Pérez, I; López-Horgue, M
HERO ID
4968761
Reference Type
Journal Article
Year
2005
Language
English
PMID
| HERO ID | 4968761 |
|---|---|
| In Press | No |
| Year | 2005 |
| Title | Distributions of C22-C30 even-carbon-number n-alkanes in Ocean Anoxic Event 1 samples from the Basque-Cantabrian Basin |
| Authors | Chaler, R; Dorronsoro, C; Grimalt, JO; Agirrezabala, LM; Fernández-Mendiola, PA; García-Mondejar, J; Gómez-Pérez, I; López-Horgue, M |
| Journal | Naturwissenschaften |
| Volume | 92 |
| Issue | 5 |
| Page Numbers | 221-225 |
| Abstract | The Ocean Anoxic Event 1 (OAE-1) in central sites of the Basque-Cantabrian Basin exhibits very reducing depositional conditions of sedimentation. These sedimentation events have left a distinct mixture of hydrocarbons that are represented by C22-C30 n-alkanes with a predominance of the even-carbon-number homologues, high relative proportions of squalane and C16-C24 n-alkylcyclopentanes predominated by n-undecyl-, n-tridecyl- and n-pentadecylcyclopentane. Other minor compounds encompass a series of C18-C21 n-alkylcyclohexanes and C18-C24 dimethyl n-alkylcyclohexanes maximized by the even-carbon-number homologues as well as iso- and anteiso-alkanes. This unusual distribution of n-alkanes in this environment provides a new case for comparison with previously reported hypersaline and phosphorite sedimentary deposits where the occurrence of similar n-alkane distributions was reported. In the present case, these major n-alkanes and squalane are indicative of transformation under strong reducing conditions. In contrast, the occurrence of the alkylcyclopentanes, irrespective of the presence of even-carbon-number n-alkanes or squalane, suggests that reductive cyclization of fatty acids is less dependent on strong reducing conditions. |
| Doi | 10.1007/s00114-005-0616-2 |
| Pmid | 15776255 |
| Wosid | WOS:000229835500002 |
| Url | http://link.springer.com/10.1007/s00114-005-0616-2 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |