fig25.htm

Figure 25. Schematic map of petroleum potential in the Barents-Kara shelf based on the results of neotectonic analysis.
1 - highly promising areas of the neotectonically inherited continental-margin and intracontinental platforms with maximum sedimentary thicknesses; 2 - promising areas of marginal and intracontinental platforms with thick sediments that were moderately lowered during recent time; 3 - promising areas of prograding continental slopes with thick Cenozoic clinoforms; 4 - low-promising areas of the reactivated outer periphery of the continental-margin platform, where differential crustal movements and recent faults might have destroyed hydrocarbon accumulations; 5 - low-promising areas of marginal and intracontinental platforms with thin sediments; 6 - low-promising areas of old platforms unaffected by neotectonics; 7 - nonpromising areas of neotectonically raised shields, orogens, and ridges of platform folded basements; 8 - nonpromising areas of Cenozoic spreading-type oceanic platforms; 9 - boundaries of areas with varying petroleum prospects; 10 - Late Mesozoic-Cenozoic faults controlling hydrocarbon accumulations; 11 - transform faults; 12 - shelf-edge flexure-fault zone (a), same reworked by recent graben-shaped rifts; 13 - contact between the oceanic and the continental crust.


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