Abstract
3-D electrical resistivity model of the Hengill geothermal area (Iceland) and temperature well logs are used for recovering 3-D temperature model up to the depth of 20km. Its analysis showed that the background temperature of the Icelandic crust above 20km does not exceed 400°С. It is overlapped by a network of interconnected high-temperature low resistive channels, which braid through the crust mainly at a level of 10–15km and root to a depth below 20km. Joint analysis of the temperature and resistivity models taking into account the Bouguer gravity anomalies enabled to suggest a new self-consistent conceptual model of the Icelandic crust, which agrees with previous geophysical results and provides an explanation for the facts the previous models failed to explain.
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