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Lunar ring dikes from orbiter I. | LitMetric

Orbiter photographs of the wall of a large circular formation on the moon show that the wall is a convex body resembling a flow of viscous lava. The slopes are less than the angle of repose of dry rock; hence an explanation in terms of mass wastage is hard to support. The viscosity is approximately 10(13) centimeter-gram- second units, indicating an acid lava.

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Source
http://dx.doi.org/10.1126/science.155.3758.77DOI Listing

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