Butajiri-Silti Field

화산대지 · Ethiopia · 2281m

The 1-km-wide, lake-filled Ara-Shetan maar is located at the S end of the Butajiri-Silti volcanic field. It consists of a large group of basaltic scoria cones, maars, and lava flows in an 80-km-long, NE-SW-trending area near the W margin of the Ethiopian Rift. At least 13 maars, many filled by lakes, are located near the town of Debre Zeit, SE of Ethiopia's capital city, Addis Ababa. · 사진: Photo by Giday Wolde-Gabriel (Los Alamos National Laboratory). · Wikimedia Commons

화산 유형: 화산대지
국가: Ethiopia
지역: Eastern Africa Volcanic Regions / Main Ethiopian Rift Volcanic Province
해발: 2281m
좌표: 8.050, 38.350
마지막 분화: 미확인
판구조 환경: Rift zone / Continental crust (> 25 km)
화산 지형: Cluster
주요 암석: Basalt / Picro-Basalt

지질학적 요약

The Butajiri-Silti volcanic field consists of a large group of basaltic cinder cones, maars, and lava flows in an 80-km-long, NE-SW-trending area near the western margin of the Ethiopian Rift. At least 13 maars, many filled by lakes, are located near the town of Debre Zeit, SE of the capital city of Addis Ababa. The maars were erupted through Pleistocene rhyolitic lava flows and tuffs. Eruptions of the younger basaltic cinder cones were contemporaneous with those that produced the maars. Some of the lava flows associated with the cinder cones were considered very young by Di Paola (1972).

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