Geology and Minerals
An eruption of Mount Semeru, a volcano in East Java province of the Indonesian island of Java, began on 4 December 2021. The eruption began after heavy precipitation caused the collapse of the lava dome at the summit. Pyroclastic flows and lahars damaged at least 5,205 homes and several public buildings. At least 69 people died, 104 more were injured, while more than five remain missing.
Grand Erg Occidental.
Amba Aradam Formation.
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