Spur and Gully

  • Henrik Hargitai
Living reference work entry
DOI: https://doi.org/10.1007/978-1-4614-9213-9_634-1

Definition

Wall morphology displaying a repeated pattern of branched or unbranched ridges and intervening alcoves.

Synonyms

Description

Branched or linear debris chutes (linear, downslope-oriented depressions) with intervening sharp rocky ridges (spurs) (Schon et al. 2009). Wall may be crenulated by alcoves caused by the gullies (being either fluvial or debris flows) or by landslide scarps. Spur crests may be branched (forming dendritic ridges) (Fig. 1) or unbranched (Fig 2). In several cases, spur-and-gullied wallrocks show layering (Lucchitta et al. 1992, p. 463) (Fig. 3). Upper slopes are steep (45–90°) and bedrock floored, and lower slopes may be occupied by talus at the angle of repose (30–45°) (Howard 1998, p. 300).

Keywords

Debris Flow Drainage Density Fault Scarp Snow Avalanche Crater Wall 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Planetary Science Research GroupEötvös Loránd University, Institute of Geography and Earth SciencesBudapestHungary