Controversial Issues of Hydrocarbon Field Formation and the Role of Geomagnetic Fields

Figure 5

A decline in the complex mixed naphthenes after the source rock (shale) was heat-treated under the magnetic field: (a) bitumoid chromatogram after the thermal treatment without magnetic field; (b) bitumoid chromatogram after the thermal treatment under a magnetic field, and (c) a histogram of the difference in the naphthene “hump” (total naphthenes in bitumoid) for samples heat-treated under a magnetic field and with no magnetic field [41].

(a)

(b)

(c)