Elevated, large crustal block.
Large expanses of high-standing topography in the northern hemisphere of Mercury do not appear to correlate spatially with free-air gravity anomalies (Smith et al. 2012). This observation suggests that topography on Mercury may be largely compensated isostatically, such that high-standing topography is underlain by thicker crust than surrounding lows.
Parts of this high topography are bounded by large-scale thrust systems, some of which form fold and thrust belts ( mountain belt), which may have isolated the thicker crustal blocks from neighboring thinner portions of Mercury’s crust. As the planet’s interior cooled, thicker crustal blocks thus likely overthrust neighboring low-lying terrain in response to lithospheric shortening (Byrne et al. 2014).
On Venus, the term crustal plateau is applied to large, tessera-bearing elevated blocks (see crustal plateau (Venus)).
The Aristarchus Plateau (diameter: 240...
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