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.[2][3] The system was last active in the Precambrian.[2]

Shear zones and terranes in Uruguay after Gaucher et al., 2008.[1] Sierra Ballena Shear Zone is marked as "SBSZ". To the west Sarandí del Yí Shear Zone is marked as "SYSZ".

References
  1. Gaucher, C.; Finney, S. C.; Poiré, D. G.; Valencia, V. A.; Grove, M.; Blanco, G.; Pamoukaghlián, K.; Peral, L. G. (2008). "Detrital zircon ages of Neoproterozoic sedimentary successions in Uruguay and Argentina: insights into the geological evolution of the Río de la Plata Craton". Precambrian Research. 167 (1): 150–170. Bibcode:2008PreR..167..150G. doi:10.1016/j.precamres.2008.07.006. hdl:11336/74329.
  2. The Sierra Ballena Shear Zone in the southernmost Dom Feliciano Belt (Uruguay): evolution, kinematics, and deformation conditions
  3. Bossi, Jorge; Gaucher, Claudio (2004), "The Cuchilla Dionisio Terrane, Uruguay: An Allochthonous Block Accreted in the Cambrian to SW-Gondwana", Gondwana Research, 7 (3): 661–674, Bibcode:2004GondR...7..661B, doi:10.1016/S1342-937X(05)71054-6
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