Fig. 2: Raman spectroscopy of the BRC organic films.
From: Inherited geochemical diversity of 3.4 Ga organic films from the Buck Reef Chert, South Africa
Representative Raman spectrum of the BRC organic films and its decomposition with a Voigt function. 4 bands were used to decompose the signal and estimate the maximum temperature experienced by carbonaceous matter, following Beyssac, et al.40.
