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Crater Chain (Impact, Primary)

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Definition

A linear crater chain is a regularly spaced row of three or more impact craters (for two craters doublet crater) with similar sizes and apparently identical ages, formed by the impact of tidally disrupted bodies.

Synonyms

(Impact) crater row; Individual craters in a chain: catena craters; Linear crater chain

Description

Linear crater chains consist of strings of closely spaced roughly similar-sized aligned craters.

Subtypes

(1) Linear; (2) Doublet crater, if a “row” consists of two craters.

Formation

They likely originate from weak rubble pile asteroids or comets (fragile aggregates of large and small components held together by self-gravity or surface forces rather than material strength) tidally pulled apart during a close approach to a planet, separating into a train of fragments which then impacted a moon rather than escaping to interplanetary space.

Since there are no asteroids in the outer solar system, only comets can be the source of crater chains on giant planet...

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References

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Correspondence to Derek C. Richardson .

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© 2014 Her Majesty the Queen in Right of Australia, as represented by Trudi Hoogenboom

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Richardson, D.C., Hagen, T.H. (2014). Crater Chain (Impact, Primary). In: Encyclopedia of Planetary Landforms. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-9213-9_73-2

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  • DOI: https://doi.org/10.1007/978-1-4614-9213-9_73-2

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  • Publisher Name: Springer, New York, NY

  • Online ISBN: 978-1-4614-9213-9

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