Figure F19. Comparison of stratigraphic and thermal regimes at Baby Bare and Grizzly Bare outcrops (modified from Fisher et al., 2003a). A. Heat flow data. B. Projected isotherms within sediments and shallowest basement, using methods described in the text. C. Seismic data. Note this fundamental difference in the thermal regimes around the two outcrops: heat flow rises abruptly at edge of Baby Bare exposure, whereas heat flow decreases immediately adjacent to Grizzly Bare outcrop. As a result, calculated isotherms are swept upward below Baby Bare outcrop but swept downward into the crust around Grizzly Bare outcrop. Typical sediment thickness away from both outcrops is about the same, as is the background heat flow of ~180 mW/m2, and there is no indication of broad scale heat flow suppression around either outcrop. Vertical exaggeration in seismic plots = ~3.
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