41. West of Sarand?del Y?Shear Zone the R�o de la Plata Craton is intruded by the Florida dyke swarm. 42. The three subprovinces are separated by steeply dipping shear zones caused by continued compression that occurred during the Algoman orogeny. 43. A shear zone is a tabular to sheetlike, planar or curviplanar zone composed of rocks that are more highly folding. 44. This phase of tectonic activity along the Big Dan Shear Zone also displaced felsic dikes north of the shear zone. 45. The orebody is a massive sulfide deposit of pyrite, chalcopyrite, and pyrrhotite along a shear zone in the Franciscan Formation. 46. The three sections, respectively called the Gneiss Belt, Metasedimentary Belt, and the Granulite terrane are all separated by shear zones . 47. The Gascoyne Complex is separated from the Yilgarn Craton to the south by a major fault, the Errabiddy Shear Zone . 48. This phase of tectonic activity along the Big Dan Shear Zone also displaced felsic dikes north of the shear zone . 49. During deformation the rock was flattened and then stretched by movement along a ductile shear zone within which this outcrop resides. 50. Subsequent translational slides have developed along a shear zone at the boundary between the slip material and the undisturbed underlying Weald Clay.
