Search
Menu
Home
Sources
About
Contacts
Sierra Ballena Shear Zone
Sierra
Ballena
Shear Zone
or
SBSZ
is a
sinistral strike-slip
shear zone
running
across the
Uruguayan Shield
in
eastern
Uruguay
and the
Brazilian state
of
Rio Grande do Sul
.
The system
was last
active
in the
Precambrian
.