Heat flow and heat production in northeast Africa |
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| Authors: | TR Evans HY Tammemagi |
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| Institution: | Geology Department, Imperial College of Science and Technology, London Great Britain |
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| Abstract: | The analysis of both temperature data and thermal conductivity material from seven deep oil exploration horeholes in northeast Africa has allowed the calculation of a heat flow value in the Somalian Horn (average58 ± 12mW m?2) and one from the coastal plain of northeast Sudan (average96 ± 19mW m?2). Heat production measurements of granites from the Sudanese basement indicate a substantial depletion in the radiogenic heat producing elements.The heat flow results complement previous measurements from the Gulf of Aden and the Red Sea and are consistent with the geological and geophysical consensus that these two regions are young proto-oceans formed by the mechanisms of spreading lithospheric plates. The heat production evidence suggests that the lithospheric plate beneath the Sudan coastal plain is approximately 30–50 km thick and underlain by a zone of partial or complete melt. |
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