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Jebel Marra, a dormant volcano in Darfur Province, Western Sudan

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Abstract

The geology of the Tertiary-Recent Marra mountains is shown on photogeological maps and described using data from short field visits and from previous literature. The 200 km long mass is aligned N-S parallel to basement trends; it comprises a stratified complex 2000 m thick of olivine basalts, pyroclastics and trachytes. Coarse detrital deposits testify to concomitant erosion. The spectacular Deriba caldera contains a deep crater lake and associated hot springs and fumeroles. The Marra mountains lie at the intersection of two transcontinental tectono-volcanic zones, ENE from Cameroon to Red Sea and SSE from Libya to Kenya.

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Vail, J.R. Jebel Marra, a dormant volcano in Darfur Province, Western Sudan. Bull Volcanol 36, 251–265 (1972). https://doi.org/10.1007/BF02596994

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