Figure 10. Functioning of waveguides in a former collision zone of lithospheric plates. An ordered across-strike pattern of hydrocarbon deposits is observed. Gas deposits are located in the frontal part, and heavy oil and bitumen deposits develop in the back part. 1 - continental crust, 2 - mantle part of lithosphere, 3 - crust waveguide, 4 - sediment rock, 5 - hydrocarbon deposit, 6 - gas, 7 - oil, 8 - water.