[meteorite-list] selenium concentrations// an indicator of impact?

From: drtanuki <drtanuki_at_meteoritecentral.com>
Date: Mon, 29 Sep 2008 02:41:45 -0700 (PDT)
Message-ID: <155490.55460.qm_at_web53209.mail.re2.yahoo.com>

Dear List,
  Selenium is an available marker for impact geology. Some plants are indicators for selenium-rich soils and these indicator plants should be noted when searching for impact crater ejecta.
Best Always, Dirk Ross...Tokyo

http://www.webelements.com/selenium/geology.html

Abundances for selenium in a number of different environments. Use the links in the location column for definitions, literature sources, and visual representations in many different styles (one of which is shown below) Location ppb by weight ppb by atoms
Universe 30 0.5
Sun no data no data
Meteorite (carbonaceous) 13000 2900
Crustal rocks 50 10
Sea water 0.45 0.035
Stream 0.2 0.003
Human 50 4
Received on Mon 29 Sep 2008 05:41:45 AM PDT