Mathematics – Logic
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29j.136m&link_type=abstract
Geophysical Research Letters, Volume 29, Issue 10, pp. 136-1, CiteID 1498, DOI 10.1029/2002GL014956
Mathematics
Logic
2
Planetary Sciences: Surface Materials And Properties, Planetary Sciences: Tectonics (8149)
Scientific paper
Europa's surface is tectonically and morphologically complex. Europan ridges, bands, ridged bands, double ridges, complex ridges, and troughs are collectively referred to as lineaments. Some lineaments are fault zones and exhibit sets of en echelon ridge and trough structures (EERTS). EERTS can be used to interpret the stress field in which the lineaments formed. These observations suggest that some lineaments at low latitudes initially formed as shear zones, rather than as purely tensional fractures as is commonly assumed. From stepping directions of EERTS and the offset directions of the lineaments in which they occur, we infer that some EERTS form as a result of compressional stress and others form as a result of tensional stress. EERTS that are inferred to form in compression are morphologically indistinguishable from EERTS that form in tension. The presence of tensional EERTS may support a diapiric origin for some ridges.
Greeley Ronald
Michalski Joseph R.
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