Description :
5H. Inset. Evidence for pre-Ketyet River group deformation. Foliated granite clasts in basal polymictic conglomerate of the Ketyet River group. The central cobble was extracted and dated at 2.62 Ga (Pehrsson et al., 2004). Note the internal foliation (SA2) in the granite cobbles at differing orientations to the external SP1 defined by matrix schistosity and clast elongation. A low angle spaced SP2 crenulation is counterclockwise to SP1. Central granite cobble is 10 cm long.
Photographe :
Pehrsson, S J
Collection :
Ressources naturelles Canada
Haute-résolution :
0.319 MB
706x484 pixels
96 ppi (jpeg)
Géographie :
320; Ukalik Lake; Nunavut; 2020-889.jpg