Figure F46. Stress polygons at depths in Hole C0001D where drilling-induced tensile fractures were detected. Possible ranges of in situ stress magnitudes indicated by tensile hoop stress criterion (red lines). A. 80 m LSF. B. 720 m LSF. C. 820 m LSF. D. 910 m LSF. APWD = annular pressure while drilling. Stress regime: NF = normal faulting, SS = strike-slip faulting, TF = thrust faulting. Sv = vertical stress.
Previous | Close | Next | Top of page