Encyclopedia of Planetary Landforms

2015 Edition
| Editors: Henrik Hargitai, Ákos Kereszturi

Crater Outflow (Venus)

Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-3134-3_81

Definition

A crater outflow is a relatively thin (sometimes radar transparent) and often lobate lava-like flow feature associated with an impact crater on Venus. A crater outflow is typically asymmetrically distributed around a crater.

Synonyms

Crater outflow (Miyamoto and Sasaki 2000);  Flow-like ejecta; Fluidized ejecta blanket (Komatsu et al. 1991);  Impact melt flow; Outflow deposit (Asimow and Wood 1992); Run-out flow (Schultz 1992; Sugita and Schultz 2002)

Description

Crater outflows are clearly distinguished from ballistic ejecta. Many of them have an often lobate, radar-bright, lava-like deposit originating within the continuous ejecta blanket and flow for up to several crater diameters along topographic gradients but in some cases, initially uphill (downrange from the crater). They often have fluvial-like morphologies and sinuous channels originating on, cutting through, and continuing away from fluidized ejecta blankets (Johnson and Gaddis 1996; Komatsu et al. 1991). The...
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References

  1. Asimow PD, Wood JA (1992) Fluid outflows from Venus impact craters: analysis from Magellan data. J Geophys Res 97:13643–13665CrossRefGoogle Scholar
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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Department of Earth and Planetary ScienceUniversity of TokyoTokyoJapan