Raman Spectral Shifts in Naturally Faulted Rocks

Raman spectral shifts of carbonaceous materials arising from faulted rocks produce varied and complex results. By analyzing adjacent non-faulted samples three discrete localities in France, Italy, Morocco, we assess changes specific parameters, including G-peak width, position, peak intensity ratios. We consistently observe a shift parameters between samples; however, the direction magnitude this varies. ratios are shown to both increase decrease on fault planes. The majority exhibit decreasing width position samples, but is not consistent; two an observed, tends be small. These data compared published experimental data. Our results suggest that zone deformation processes may measurably change carbon nanostructure rocks. inconsistent nature rock analyzed, those set factors control factors, although discriminated here, likely include, background temperature, frictional heating, strain, material type, amongst others. have Spectral occur with implications for how used predict maximum temperatures sedimentary recognize potential range modify shifts, systematic sampling across individual zones critical.