Encyclopedia of Planetary Landforms

2015 Edition
| Editors: Henrik Hargitai, Ákos Kereszturi

Ridge Complex (Europa)

  • D. Alex Patthoff
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-3134-3_310


Linear to curvilinear feature composed of multiple superposed and interweaving, anastomosing, or sinuous subparallel and discontinuous single and double ridges.


A type of  ridge on Europa.


Complex ridge (not recommended – Kattenhorn and Hurford 2009); Triple bands (as albedo feature, obs.)

Description and Morphometry

Ridge complexes can reach widths up to 10 s of km (Kattenhorn and Hurford 2009; Prockter and Patterson 2009) and can be traced for 100 s of km. Ridge complexes show no obvious bilateral symmetry. Several ridge complexes are observed to be segmented (Patterson and Head 2010).


  1. (1)

    (Class 2) Wide, lineated ridges up to 200 m in height with a central valley or groove that represents a spreading center (Greenberg et al. 1998)

  2. (2)

    (Class 3) Braided, intertwined, mutually crossing ridge complexes (Greenberg et al. 1998; Fig. 1)

This is a preview of subscription content, log in to check access.


  1. Aydin A (2006) Failure modes of the lineaments on Jupiter’s moon, Europa: implications for the evolution of its icy crust. J Struct Geol 28:2222–2236CrossRefGoogle Scholar
  2. Collins GC, McKinnon WB, Moore JM, Nimmo F, Pappalardo RT, Prockter LM, Schenk PM (2010) Tectonics of the outer planet satellites. In: Schultz RA, Watters TR (eds) Planetary tectonics. Cambridge University Press, New York, pp 264–350Google Scholar
  3. Greenberg R, Geissler P, Hoppa G, Tufts BR, Durda DD, Pappalardo R, Head JW, Greeley R, Sullivan R, Carr MH (1998) Tectonic processes on Europa: tidal stresses, mechanical response, and visible features. Icarus 135:64–78CrossRefGoogle Scholar
  4. Kattenhorn SA, Hurford TA (2009) Tectonics of Europa. In: Pappalardo RT, McKinnon WB, Khurana K (eds) Europa. University of Arizona Press, Tucson, pp 199–236Google Scholar
  5. Patterson GW, Head JW (2010) Segmented lineaments on Europa: Implications for the formation of ridge complexes and bright bands. Icarus 205:528–539CrossRefGoogle Scholar
  6. Prockter LM, Patterson GW (2009) Morphology and evolution of Europa’s ridges and bands. In: Pappalardo RT, McKinnon WB, Khurana K (eds) Europa. University of Arizona, Tucson, pp 199–236Google Scholar

Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Planetary Science Division, Jet Propulsion LaboratoryCalifornia Institute of TechnologyPasadenaUSA