Riccio, L., 1976. Stratigraphy and petrology of the peridotite-gabbro component of the Western Newfoundland ophiolites. Ph.D. thesis, University of Western Ontario, 264 p.

p. 66-72
F: Interbanded zones of the Lewis Hills Mass
Several irregular zones of interbanded gabbroic and ultramafic rocks, surrounded by dunite, have been mapped throughout the Lewis Hills mass (Cooper, 1936; Smith, 1958).  A detailed stratigraphic and petrographic description of one of these zones was given by Cooper (1936) whereas Smith (1958) commented on the similarities between the Lewis Hills interbanded rocks and the interbanded rocks occurring at the contact between ultramafic and gabbroic rocks in the three ophiolite massifs farther to the north at Blow Me Down, North Arm and Table Mountain.
A re-examination of the interbanded zones in the vicinity of Hines Pond and Rope Cove Canyon was undertaken in order to establish the nature of the rocks and the contact relationships between interbanded zones and dunite. The results of this investigation are summarized in Fig. 9.
The following points are emphasized: 
1)  Rocks of the interbanded zones are igneous cumulates containing variable proportions of cumulus olivine, clino-pyroxene, and plagioclase. 
2)  Contacts between interbanded zones and dunite represent major phase contacts in that plagioclase is a settled min-eral in interbanded zones whereas cumulus plagioclase is absent from the dunite. 
3)  Units of interbanded zones tend to be cyclically re-peated throughout the section (Plate 9-1) thus suggesting that they formed through successive injections of magma. 
4)  Most of the individual rock units are characterized by fine-scale rhythmic layering and ratio contacts caused by sharp vertical changes in the relative proportions of settled minerals (Plate 9-1). 
5)  The order of crystallization of cumulus minerals interbanded zones B and C is olivine, clinopyroxene, plagioclase whereas in interbanded zones A and D the order is olivine-plagioclase-clinopyroxene. 
6) Spinel segregations of interbanded zone A form persistent layers, 1 mm. to 10 cm. thick, between the anortho-site and dunite (± plagioclase) units of rhythmically layered dunite-troctolite-(olivine gabbro)-anorthosite sequences (Plate 9-2). Such sequences are present in the northern Appennines ophiolites (Bezzi and Piccardo, 1971, Fig. 13 and 14) and in the Rhum layered intrusion (Wager and Brown, 1968, Fig 155) ,

F1: Deformation and metamoprhism of rocks of the Lewis Hills interbanded zones
Although rocks of the interbanded zones are classified as igneous cumulates on the basis of composition, and the presence of rhythmic and cryptic layering, and cyclic repetition of units (Cooper, 1936; p.43), textural features indicative of igneous cumulates have been obliterated in most of the interbanded zones as a result of the intense. deformation they have undergone. 
In the least deformed of the interbanded zones examined (Interbanded zone A) cumulus textures such as cuspate textures developed at the contact between spinel and -anorthosite layers and size-grading (Cooper, 1936; p32) within rhythmically layered gabbros are still recognisable. The effects of deformation are only apparent in thin section, most commonly in the form of the undulatory extinction of mineral grains examined under crossed nicols.