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surface faulting along a "mole track" How is the reader to visualize a "mole track" caused by faulting?--Wetman (talk) 04:38, 9 January 2015 (UTC)
I have other concerns about this article. It is lacking focus and organization; it was written when I had less experience writing earthquake articles. Dawnseeker2000 05:53, 9 January 2015 (UTC)
I've looked up several papers that refer to "mole tracks", structures that typically form in surface ruptures during earthquakes along strike-slip faults through recent sediments. What I lack so far is a good definition. I'll keep looking and then see what I can do to tweak the article. Mikenorton (talk) 17:24, 9 January 2015 (UTC)
Here at least is a nice image File:Fault trace geq00014.jpg of a mole track in the surface rupture sense and here in contrast is a track left by a mole, so it's not difficult to see where the term came from. It appears to have first been used in the USGS report on The Parkfield-Cholame California, Earthquakes of June-August 1966 "Pressure ridges and raised wedges of soil are evidence of local compressional effects within the fracture zone. For about a mile south of locality F23, these features are so abundant that the fracture zone, when viewed from a few hundred feet away, resembles a low raised welt or mole track several inches high". Rick Sibson in 2003 said " In alluvium, strike-slip rupture zones typically comprise a “mole-track” array of en echelon primary Riedel shears with linking compressional rolls and minor thrusts." Now all I have to do is to come up with some appropriate text. Mikenorton (talk) 18:34, 9 January 2015 (UTC)
I've added an explanation using the quote from Rick Sibson - however that comes with its own technical terms I'm afraid. Mikenorton (talk) 20:35, 10 January 2015 (UTC)