Pb, Nd AND Sr ISOTOPES IN AEROSOLS EXTRACTED FROM SNOW, BERKNER ISLAND

• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Arctic; Berkner Island; Antarc*; Antarctica
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.623.5099; http://www.lpi.usra.edu/meetings/lpsc2004/pdf/1530.pdf

There are several good reasons to investigate at-mospheric dust from Antarctica. 1) About 90 % of our collected meteorites continue to come from this conti-nent. Many of these meteorites have suffered some degree of contamination (Dreibus et al, 1985), which is most likely derived from aerosols trapped in the Ant-arctic ice. 2) Antarctica is the cleanest terrestrial envi-ronment as regards to atmospheric particulate fallout, and so we might be able to monitor the influx of cos-mic dust there. The ability to analyze snow samples on a scale permitting seasonal resolution of dust influx would be especially helpful. 3) By comparing the iso-topic signature of dust trapped in the ice or snow with that of possible source regions, important information may be gained about transport directions, distances