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Sacajawea Patera

Sacajawea Patera is a huge caldera located in western Ishtar Terra. It measures approximately 233 km (140 mi) wide at its base, 1-2 km (0.6 -1.2 mi) deep and 120 by 215 km (74 by 133 mi) in diameter. The caldera is bounded by a zone of graben and fault scarps. Extending up to 140 km (87 mi) in length from the southeast of Sacajawea is a system of linear structures thought to be a flanking rift zone along which the lateral injection and eruption of magma may have occurred.

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