Parameter Tree:
EARTH SCIENCE > PALEOCLIMATE > ICE CORE RECORDS > VOLCANIC DEPOSITS

Definition:
Volcanic deposits (including volcanic ash, debris, etc.) are found within ice
core
records. Volcanoes can produce large quantities of particles and leave a record
in the ice. Scanning electron micrographs of the particles from a particularly
large dust peak in an ice core may reveal that it is from a known volcano and
allow a firm date to be placed on that section of core. For prehistoric times,
the dust record is a key tool for reconstructing a history of volcanic
activity.


Reference:
GISP2 (Greenland) Ice cores and Climate Change:
http://www.gisp2.sr.unh.edu/GISP2/MoreInfo/Ice_Cores_Past.html