1997
DOI: 10.1590/s0100-40421997000300010
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Lipídios como Indicadores de Mudanças Climáticas no Passado 1: Biomarcadores Marinhos

Abstract: Recebido em 21/3/96; aceito em 27/6/96 LIPIDS AS INDICATORS OF PALEOCLIMATIC CHANGES 1: MARINE BIOMARKERS. The distribution and abundance of specific lipid biomarkers in marine sediments can play an important rule for the reconstruction of past climatic changes. Here, it is shown the use of a widely known paleo Sea Surface Temperature (SST) proxy based on the unsaturation ratio of a suite of long-chain C 37 alkenones: the alkenone unsaturation index, U K 37 '. These compounds are biosynthesised by only a restr… Show more

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“…The extraction technique and sediment analyses for T90-2P by GC and GC-MS followed the same procedure as for T88-9P, and details are given in Madureira et aI. (1995 and1997). Briefly, prior to ana!ysis, porewater was removed by evaporation/fteeze-drying and the dried '~ediment homogenisedin a môrtar' .…”
Section: Ateriais and Methodsmentioning
confidence: 99%
“…The extraction technique and sediment analyses for T90-2P by GC and GC-MS followed the same procedure as for T88-9P, and details are given in Madureira et aI. (1995 and1997). Briefly, prior to ana!ysis, porewater was removed by evaporation/fteeze-drying and the dried '~ediment homogenisedin a môrtar' .…”
Section: Ateriais and Methodsmentioning
confidence: 99%