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Arequipa–Antofalla Craton
The
Arequipa-Antofalla
craton
or
terrane
is a basement unit underlying the central
Andes
in
northwestern Argentina
, western
Bolivia
,
northern Chile
and southern
Peru
. The Arequipa-Antofalla craton collided and amalgamated with the
Amazonian craton
about 1000 Ma ago during the
Sunsás orogeny
.
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