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BARBERTON MOUNTAIN LAND
1
CHICXULUB IMPACT
1
CRETACEOUS-TERTIARY BOUNDARY
1
Earth and Environmental Sciences
1
HAMERSLEY BASIN
1
HEAVY BOMBARDMENT
1
Late Archaean
1
MESOARCHAEAN MANIITSOQ STRUCTURE
1
Ni-rich spinel
1
ORDOVICIAN LOCKNE CRATER
1
Paraburdoo
SOUTH-AFRICA
1
SPHERULE BEDS
1
WESTERN-AUSTRALIA
1
impact
1
platinum group elements
1
spherule layers
1
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