Study of the Effects of Heating on Organic Matter and Mineral Phases in Limestones

Figure 6

Diffuse reflectance spectra as a function of thermal treatment for limestone rocks: (a) BC, (b) BS, (c) IM, and (d) reflectance variation due to heating at a fixed wavelength of 765 nm. The photographic images just give an illustrative guide of the optically observed changes induced by heating.

(a)

(b)

(c)

(d)