page_title: Phonolite series in North Ethiopia
section_title: Geographical extent
hierarchical_section_title: Phonolite series in North Ethiopia / Geographical extent
caption_attribution_description: English: Phonolite used as dimension stones for church building in Khunale, Dogu'a Tembien, Ethiopia. Stick points at a 1.4 metres long dimension stone.
context_page_description: The phonolite or clinkstone of northern Ethiopia is a shallow-seated igneous rock. The phonolites intruded and punctured the Mesozoic sedimentary rocks and the Tertiary flood basalts some 19 to 11 million years ago.
context_section_description: These silica-poor rocks belong to the Adwa-Aksum trachy-phonolite volcanic field. They are also exposed in Addi Amyuq, some 3 kilometres north of Hagere Selam, on the northern slope of the ridge. The morphology of the Addi Amyuq phonolite outcrop is similar to that of Gobo Dura where the Aksum obelisks were quarried.
caption: Phonolite used as dimension stone for church building in Khunale, Dogu’a Tembien district. The stick points to a 1.4 metres long dimension stone
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