Grooves are subparallel, periodically spaced ridges and troughs that commonly modified light materials on Ganymede (Patterson et al. 2010).
Corresponding Terrain Type
Grooved terrain, “ridge and trough terrain,” and bright terrain.
Undulating, periodic, large amplitude, complex deformation features. These sets of subparallel ridges and troughs form the grooved terrain, which occur in lanes or swaths (groove lanes/groove swaths) (Squyres 1981; Bland et al. 2009; Collins et al. 1998) between the large, darker, and older polygon-shaped crustal blocks. Groove floors are also ridged/lineated, at finer scales.
Grooves have a uniform spacing of 3–17 km. Groove spacing is constant within a groove lane but commonly variable from one lane to another (Grimm and Squyres 1985; Patel et al. 1999). Groove amplitudes from peak to trough are up to 500 m (Giese et al. 1998). The finer lineation on the groove floors has a spacing of ≤1 km (Pappalardo et al. 1998). The...
KeywordsNormal Fault Seafloor Spreading Extensional Strain Light Material Narrow Ridge
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