Comment on 'Eye and sheath folds in turbidite convolute lamination: Aberystwyth Grits Group, Wales', by H.LO. McClelland, N.H. Woodcock, C. Gladstone, Journal of Structural Geology 33 (2011) 1140-1147

摘要

Sheath folds are very important structures found in ductile shear zones and slumps, and therefore have deserved continued attention from structural geologists (e.g. Agar, 1988; Berthe and Brun, 1980; Brun and Merle, 1988; Carreras et al., 1977; Cobbold and Quinquis, 1980; Coward and Potts, 1983; Exner and Dabrowski, 2010; Ez, 2000; Gaudemer and Tapponnier, 1987; Henderson, 1981; Hibbard and Karig, 1987; Jiang and Williams, 1999; Malavieille, 1987; Mandal et al., 2009; Marcoux et al., 1987; Marques, 2009; Marques and Cobbold, 1995; Marques et al., 2008; Mies, 1993; Minnigh, 1979; Passchier et al., 2011; Rosas et al., 2001, 2002; Skjernaa, 1989; Talbot, 1979), to mention but a few as example of the great amount of work published on sheath folds. The paper by McClelland et al. (2011) raises a number of points that are already mentioned in these key publications, and hence need discussion.