Ontology highlight
ABSTRACT:
SUBMITTER: Shaheen R
PROVIDER: S-EPMC4143030 | biostudies-literature | 2014 Aug
REPOSITORIES: biostudies-literature
Shaheen Robina R Abaunza Mariana M MM Jackson Teresa L TL McCabe Justin J Savarino Joël J Thiemens Mark H MH
Proceedings of the National Academy of Sciences of the United States of America 20140804 33
Sulfur-isotopic anomalies have been used to trace the evolution of oxygen in the Precambrian atmosphere and to document past volcanic eruptions. High-precision sulfur quadruple isotope measurements of sulfate aerosols extracted from a snow pit at the South Pole (1984-2001) showed the highest S-isotopic anomalies (Δ(33)S = +1.66‰ and Δ(36)S = +2‰) in a nonvolcanic (1998-1999) period, similar in magnitude to Pinatubo and Agung, the largest volcanic eruptions of the 20th century. The highest isotop ...[more]