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Pancake Domes in Eistla Region


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P-38388 MGN53
June 27, 1991

This Magellan full resolution mosaic, centered at 12.3 north latitude, 8.3 degrees east longitude, shows an area 160 kilometers (96 miles) by 250 kilometers (150 miles) in the Eistla region of Venus. The prominent circular features are volcanic domes, 65 kilometers (39 miles) in diameter with broad, flat tops less than one kilometer (0.6 mile) in height. Sometimes referred to as "pancake" domes, they represent a unique category of volcanic extrusions on Venus formed from viscous (sticky) lava. The cracks and pits commonly found in these features result from cooling and the withdrawal of lava. A less viscous flow was emitted from the northeastern dome toward the other large dome in the southwest corner of the image.

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