Circular Thin Area
Thin crust surrounded by rings of thicker crust in crustal thickness model data.
Areas of thinner crust surrounded by rings of thicker crust. Possible buried impact basins that are often not detectable by topographic data or optical imagery alone. Circular thin areas (CTAs) are detected in crustal thickness data, derived from gravity field and topographic data.
Roughly circular, large areas of thinner crust, surrounded by thicker crust.
Possible buried impact basins.
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