JMDMT #833 Microfossils of Cyanobacteria in Carbonaceous Meteorites
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The James M. DuPont Meteorite Collection - relative simplicity of the aromatic fraction from the Orgueil fragment, analyses of both the Orgueil and Murray extracts fall within the range of compositional variations observed in terrestrial sediment extracts of plant and animal hydrocarbons....
JMDMT #832 Microfossils of Cyanobacteria in Carbonaceous Meteorites
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The James M. DuPont Meteorite Collection - in terrestrial sediments. A summary of the API research on the origin of hydrocarbons notes the inability of radioactive induced reactions to make products similar to those found in nature.* C()iicl!isio)is Aromatic hydrocarbons have been...
JMDMT #825 Microfossils of Cyanobacteria in Carbonaceous Meteorites
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The James M. DuPont Meteorite Collection -problem. Fragments of the Orgueil meteorite were obtained from two museums and the Murray fragments came from another collection. Contaminants from these various locations should have been quite different, but none of the variations in the...
JMDMT #814 Microfossils of Cyanobacteria in Carbonaceous Meteorites
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The James M. DuPont Meteorite Collection - compounds.- ••■ Most sediments and organisms contain greater abundances of: (1) odd- than even- carbon number //-paraffins in the C21 to C35 range. (2) C24, C27, C28, C29 and/or C30 than of other C17 and larger tetra-, penta-, and higher...
JMDMT #809 Microfossils of Cyanobacteria in Carbonaceous Meteorites
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The James M. DuPont Meteorite Collection - In figure 2, the 12.3 and 13.4 m absorption bands of the benzene eluate of 2-()rgueil are similar to the "oil bands''' found in the in- frared spectra of the aromatic fractions of all crude oils,'*'' but the ultraviolet (figure 5) and mass spectra...
JMDMT #808 Microfossils of Cyanobacteria in Carbonaceous Meteorites
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The James M. DuPont Meteorite Collection - extracts contained small and the Orgueil extracts contained copious amounts of free sulfur. The preceding cursory examination of chromatographic and spectrometric data indicate that the Murray and Orgueil extracts resemble 572 Annals New York...
JMDMT #800 Microfossils of Cyanobacteria in Carbonaceous Meteorites
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The James M. DuPont Meteorite Collection - explained. An average sediment contains between 20 and 80 parts per million of Cm and larger hydro- carbons.' ■■*" •'* ■** These hydrocarbons usually comprise between 10 and 30 per cent of most extracts, and the hydrocarbons can be...
JMDMT #794 Microfossils of Cyanobacteria in Carbonaceous Meteorites
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The James M. DuPont Meteorite Collection -Life 569 in the sediments on earth are the most acceptable standards for the identifica- tion of former life in meteorites. Numerous soils and marine sediments have been analyzed by methods analogous to those used in this investigation of the...
JMDMT #789 Microfossils of Cyanobacteria in Carbonaceous Meteorites
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The James M. DuPont Meteorite Collection -saturated hydrocarbon fractions which have been isolated from extracts of terrestrial sediments. Peaks at x = —6, C# = 28, 29, and/or 30, which may be ''parent" ions of compounds structurally related to parent sterol hydrocarbons other than...
JMDMT #757 Microfossils of Cyanobacteria in Carbonaceous Meteorites
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The James M. DuPont Meteorite Collection - spectra of the methanol eluates of many terrestrial sediment extracts. trometer which is modified for the analysis of high molecular weight organic compounds. Operating conditions for the Consolidated instrument were: ionization potential, 70...
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