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Figure F8. Summary of temperature measurements, Site C0020. Two types of logging tools (i.e., the environmental measurement sonde [EMS] and modular formation dynamics tester [MDT]) measured borehole temperature in situ. The MDT tool recorded temperature twice: during the pretests (MDT; yellow) and fluid sampling (Quicksilver [QS]; red). The maximum temperature at the bottom of the hole was estimated by temperature build-up pattern during logging operations (the Horner Plot method; green) (Dowdle and Cobb, 1975) that shows the maximum temperature gradient of 24.0°C/km.

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