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Geology of Krakatau Complex
The Krakatau complex situated in the Sunda Strait, as a part of the Lampung Province (105°21'20" - 105°27'44" E. Long/6°03'0 2, Lot.), consists of four islands: Rakata, Sortung, Panjang and Anak Krakatau. The bordering sides facing each other at Nakata, Sertung and Panjong show a steep morphology which forms the enlders wall, at none places revealing faults.
The chronology of the volcanic rocks in the Krakatau couplex is ro- cognized as the stratigraphic succession of the periodic activity. This stratigraphic succession has given data as regards the crupti- vity of (prohistoric) Krakatau, which could be subdivided into two perioda.
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