|
|
Brief Display | Full Display
Michael Zolensky
The flux of meteorites to Antarctica (in Meteorites; flux with time and impact effects)
Geological Society Special Publications (1998), 140 93-104
Abstract: Index Terms/Descriptors: Latitude & Longitude:
GeoRef, Copyright 2004, American Geological Institute.
It is premature to report firm conclusions regarding the past meteorite flux rate from the Antarctic record, as variables related to ice flow, meteorite catchment area, weathering and removal rate are not well constrained. The relative population of meteorite types appears to be broadly compatible with the modern fall population, although there are minor differences. In particular, there are populations of small unusual irons, carbonaceous chondrites and lunar samples not found among the modern falls. In addition, slight compositional differences between modern and old (Antarctic) H chondrites may signal a time-dependent change in the flux to Earth of more common meteorites.
age; Antarctic ice sheet; Antarctica; carbonaceous chondrites; chondrites; classification; frequency; geochemistry; H chondrites; ice movement; impacts; L chondrites; meteorite flux; meteorites; spatial distribution; stony meteorites; variations; weathering
S90°00'00" -
S61°00'00" and
E180°00'00" -
W180°00'00" (Search for maps and images at Alexandria Digital Library)