Fig. 4. Galileo antijovian "wedges" region.

A Galileo 420 m/pixel image (C3 orbit) of the antijovian "wedges" region revealed a roughly orthogonal pattern of dark wedge-shaped bands overlying older, grayish bands. They contain subparallel internal striations of varying reflectance, which may be due to albedo or illumination. The arrays of striations exhibit weak to moderate bilateral symmetry. Arcuate Band B may have a visible central crack or groove, and its internal corners become rounded toward the middle of the band (Sullivan et al., 1998a). Band A is a possible strike-slip fault. At the eastern end of Band A, block BR has rotated 20° CCW. Ridge C2 is a Class 2 ridge shown in Figure 1. The similarity of the opposite borders of Bands B and C suggests that they had dilated (Tufts et al., 1997a; Tufts, 1998). The black line segment in the lower right is a permanent data gap. Image processing by Cynthia Phillips, Lunar and Planetary Laboratory, University of Arizona.

Fig. 4b. Galileo antijovian wedges - continued

A high-resolution Galileo mosaic (E12 orbit) provides an alternate view of Bands B and D, shown in Figure 4a. Mael Duin crater (provisional IAU nomenclature) is to the left.