Laser-Raman spectroscopy (Communication arising): Images of the Earth's earliest fossils?

Details Laser-Raman spectroscopy (Communication arising): Images of the Earth's earliest fossils? Laser-Raman spectroscopy (Communication arising): Images of the Earth's earliest fossils?

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002natur.420r.476p&link_type=abstract

Nature, Volume 420, Issue 6915, pp. 476-477 (2002).

Mathematics

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10

Scientific paper

Fossil remains of the most ancient, minute forms of life on Earth and other planets are hard to recognize. Schopf et al. claim to have identified the biological remnant material known as kerogen in microscopic entities in rock by using Raman spectroscopic analysis. On the basis of a substantial body of published evidence, however, we contend that the Raman spectra of Schopf et al. indicate that these are disordered carbonaceous materials of indeterminate origin. We maintain that Raman spectroscopy cannot be used to identify microfossils unambiguously, although it is a useful technique for pinpointing promising microscopic entities for further investigation.

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