Open-system degassing of sulfur from Krakatau 1883 magma

Details Open-system degassing of sulfur from Krakatau 1883 magma Open-system degassing of sulfur from Krakatau 1883 magma

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998e%26psl.160..709m&link_type=abstract

Earth and Planetary Science Letters, vol. 160, Issue 3-4, pp.709-722

Astronomy and Astrophysics

Astrophysics

8

Pyroclastics, Sulfur, Degassing, Krakatoa

Scientific paper

We present the first sulfur and oxygen isotopic data for tephra from the catastrophic 1883 eruption of Krakatau. Sulfur isotopic ratios in unaltered Krakatau tephra erupted August 26-27, 1883 are markedly enriched in 34 S relative to mantle sulfur. High 34 S values of +6.3 to +16.4 can best be explained by open-system or multi-stage degassing of SO 2 from the oxidized rhyodacitic and gray dacitic magmas with 34 S enrichment of SO 2- 4 remaining in the melt. Lower whole-rock 34 S values of +2.6 and +4.0 in two oxidized gray dacitic samples indicate more primitive subarc mantle sulfur in the 1883 magma chamber. Initial 34 S of the rhyodacitic magma was probably in the +1.5 to +4.0 range and similar to 34 S values measured in arc volcanic rocks from the Mariana Arc.

Affiliated with

Also associated with

No associations

Rating

Open-system degassing of sulfur from Krakatau 1883 magma does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Open-system degassing of sulfur from Krakatau 1883 magma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Open-system degassing of sulfur from Krakatau 1883 magma will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1576542