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Wrinkle ridges in Lunae Planum Mars: Implications for shortening and strain
Author(s) -
Plescia J. B.
Publication year - 1991
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/91gl01070
Subject(s) - planum temporale , geology , wrinkle , classification of discontinuities , ridge , strain (injury) , mars exploration program , thrust , geomorphology , paleontology , anatomy , astrobiology , medicine , mathematical analysis , philosophy , linguistics , materials science , physics , mathematics , composite material , thermodynamics
Photoclinometric data for Lunae Planum wrinkle ridges indicate average relief of ∼130 m and distinct elevation discontinuities across the ridge of 55 m. Modelling ridges as the result of thrust faulting and associated upper‐plate folding indicates shortening across individual ridges of ∼131 m (90% faulting). Total shortening at 20°N across Lunae Planum is ∼1840 m corresponding to a regional compressive strain of 0.29%. Strain appears uniform across Lunae Planum, although it is accommodated by larger and fewer structures in the west than in the east.