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This slide and slide 29 illustrate the diversity of size and morphology of the volcano-tectonic structures known as coronae. A typical corona consists of an inner circular plateau; a ridged, raised rim; and an annular trough. Volcanic features in the interior are common. The median diameter for coronae is ~250 kilometers, and the diameters of over two-thirds of the coronae are within 150 kilometers of the median. Locations of coronae in this slide, clockwise from upper left, are 2°N, 219°E; 2.5°N, 280°E; 11.5°N, 244°E; 8°S, 243°E; and 9°N, 262°E (Aruru). Click here to view a high-resolution version of the image (2.18 MB)
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