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 the logging operation (the Horner Plot method; green; Dowdle and Cobb, 1975) that shows the maximum temperature gradient of 24.0°C/km.
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