Paleomagnetic evidence for high-temperature emplacement of the 1883 subaqueous pyroclastic flows from Krakatau volcano, Indonesia
Date of Original Version
The paroxysmal 1883 eruption of Krakatau volcano in Indonesia discharged at least 6.5 km3 (dense rock equivalent) of pyroclastic material into the shallow waters of the Sunda Straits within a 15 km radius of the volcano. Progressive thermal demagnetization studies of individually oriented pumice clasts from a core sample of the submarine pyroclastic deposits show that 41 out of 47 clasts exhibit single-component remanence with mean inclination of -2.4°. Estimated subaqueous emplacement temperature for such clasts is greater than 500°C. Paleomagnetic evidence for high-emplacement temperature supports the hypothesis that proximal 1883 submarine pyroclastic deposits resulted from entrance of hot, subaerially generated pyroclastic flows into the sea. -from Authors
Publication Title, e.g., Journal
Journal of Geophysical Research
Mandeville, C. W., S. Carey, H. Sigurdsson, and J. King. "Paleomagnetic evidence for high-temperature emplacement of the 1883 subaqueous pyroclastic flows from Krakatau volcano, Indonesia." Journal of Geophysical Research 99, B5 (1994). doi: 10.1029/94JB00239.