Elsevier

Icarus

Volume 67, Issue 1, July 1986, Pages 181-183
Icarus

Notes
Topographic evidence for shield volcanism on Io

https://doi.org/10.1016/0019-1035(86)90183-1Get rights and content

Abstract

A shield volcano has been identified on Io, based on photoclinometrically determined slope values and planimetric presentation. The slope values (typically 10°) and 2.5 km height of the volcano imply that it is composed of a material with the mechanical properties of basaltic rock. The height of the volcano may also indicate a minimum value of ∼40 km for the thickness of the local lithosphere.

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Cited by (15)

  • Volcanism on Io: New insights from global geologic mapping

    2011, Icarus
    Citation Excerpt :

    Most shield volcanoes (e.g., Ra Patera) on Io typically have very shallow slopes of 0.1° and maximum elevations of ∼2 km. Steeper-sided shield volcanoes are rare; only 3 have been identified with surface slopes greater than 1°, two at Zamama (Schenk et al., 2004; Williams et al., 2005) and one within the Pele ring deposit (Moore et al., 1986). Diffuse deposits (DD, Fig. 2b) mantle underlying topography in a manner characteristic of fine-grained fragmental material, and typically occur on, near, or around active volcanic centers.

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