@article {457,
	title = {A radiocarbon-based assessment of the preservation characteristics of crenarchaeol and alkenones from continental margin sediments},
	journal = {Organic Geochemistry},
	volume = {39},
	year = {2008},
	note = {id: 883; 344AQ Times Cited:11 Cited References Count:33Y},
	pages = {1039-1045},
	abstract = {Crenarchaeotal glycerol dibiphytanyl glycerol tetraether (GDGT) lipids and alkenones are two types of biomarkers, derived from planktonic marine microorganisms, which are used for reconstruction of sea surface temperature. We determined the radiocarbon contents of the archaeal GDGT crenarchaeol and of alkenones isolated from continental margin sediments. Systematic differences were found between the two biomarkers, with higher radiocarbon content in crenarchaeol than in the phytoplankton-derived alkenones. These differences can be explained by variable contributions of pre-aged, laterally-advected material to the core sites. Crenarchaeol appears to be more efficiently degraded during transport in oxygen-replete environments than alkenones. Whether this reflects the influence of chemical structure or mode of protection (e.g., particle association) is not known. (C) 2008 Elsevier Ltd. All rights reserved.},
	issn = {0146-6380},
	doi = {10.1016/J.Orggeochem.2008.02.006},
	author = {Mollenhauer, G. and Eglinton, T. I. and HopmanSd, E. C. and Damste, J. S. S.}
}
@article {1980,
	title = {Radiocarbon dating of alkenones from marine sediments: II. Assessment of carbon process blanks},
	journal = {Radiocarbon},
	volume = {47},
	year = {2005},
	note = {993nkTimes Cited:13
Cited References Count:20
},
	month = {2005},
	pages = {413-424},
	abstract = {We evaluate potential process blanks associated with radiocarbon measurement of microgram to milligram quantities of alkenones at the National Ocean Sciences Accelerator Mass Spectrometry (NOSAMS) facility. Two strategies to constrain the contribution of blanks to alkenone C-14 dates were followed: 1) dating of samples of known age and 2) multiple measurements of identical samples. We show that the potential contamination associated with the procedure does not lead to a systematic bias of the results of alkenone dating to either younger or older ages. Our results indicate that alkenones record Delta(14)C of ambient DIC with an accuracy of approximately 10 parts per thousand. A conservative estimate of measurement precision is 17 parts per thousand for modern samples. Alkenone C-14 ages are expected to be reliable within 500 yr for samples younger than 10,500 C-14 yr.},
	keywords = {c-14 ams, organic-compounds, records, samples, system, tool},
	isbn = {0033-8222},
	author = {Mollenhauer, G. and Montlucon, D. and Eglinton, T. I.}
}
