Figure F63. A. Temperature data for Site U1351. An exponential decrease in temperature is expected for the time interval shown and used to estimate ambient temperature. This decrease is only evident for measurements in Core 317-U1351A-4H. Temperature fluctuations in subsequent cores render these data unreliable. However, data from the time interval ti to tf (triangles and squares, respectively) were used. See Table T23 for these values. B. Resulting geothermal gradient (14.1°C/km). Solid circle = only reliable temperature measurement.
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