Journal
BULLETIN OF VOLCANOLOGY
Volume 72, Issue 9, Pages 1131-1136Publisher
SPRINGER
DOI: 10.1007/s00445-010-0408-1
Keywords
Barren Island volcano; Andaman Sea; C-14 dating; Sr-Nd isotopic ratios; Marine ash layers
Categories
Funding
- Physical Research Laboratory, Ahmedabad
- Department of Science and Technology (DST), Govt. of India [ESS/16/262/2006/P-1]
Ask authors/readers for more resources
Barren Island (Andaman Sea) is the northernmost active volcano of the Indonesian Arc. To construct the eruptive history of this little studied volcano, we measured C-14 dates of inorganic carbon in sediment beds, and Sr and Nd isotopic ratios of seven discrete ash layers, in a marine sediment core collected from 32 km southeast of the volcano. The study reveals that the volcano had seven major ash eruptions at similar to 70, 69, 61, 24, 19, 15, and 10 ka. The ash layers erupted from 70 ka through 19 ka have highly uniform Nd isotopic composition, and since the similar to 15 ka eruption to the present the isotopic composition has been highly variable. Between similar to 24 ka and similar to 10 ka, the volcano had large ash eruptions spaced at 4,500 year intervals. Isotopically correlating the precaldera lavas and ash exposed on the volcano to the uppermost ash layer in the core, we infer that the caldera of Barren Island volcano is younger than 10 ka.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available