Encyclopedia of Planetary Landforms

2015 Edition
| Editors: Henrik Hargitai, Ákos Kereszturi

Small Volcano (Venus)

Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-3134-3_353

Definition

Volcano of less than 20 km in diameter on Venus (Head et al. 1992).

Description

Typically shield-shaped, radar-smooth or rough, 0.5–20 km diameter quasi-circular to circular edifices with or without a summit pit (e.g., Hansen 2005).

Morphometry

Small volcanoes studied by Kreslavsky and Head (1999) are 1–19 km high (average, 3–5 km) and 24–1,242 m high (average, 110–200 m).

Subtypes

The topographic classes of small volcanic edifices are (Aubele 1993; Guest et al. 1992): (1) shield shaped (most common) ( shield volcanoes); (2) domical shaped ( dome); (3) cone shaped ( volcanic cones), and (4) flat topped (mesa).

Interpretation

Effusive shield volcanoes (Aubele and Slyuta 1990): “the surface manifestation of low-volume eruptions of magma from shallow reservoirs and dike-like bodies” (Ivanov and Head 2004).

Age

Small volcanoes occur in a variety of geologic and stratigraphic settings on Venus.

In the equilibrium (nondirectional) resurfacing model, small volcanoes represent a...

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References

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.NASA Ames Research Center/NPPMoffett FieldUSA