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rtalm, as tolerable oxygen levels penetrate to a greater depth within the sedimelll
(Botsford, 1988). The higher overall oxygenation levels within the Mainland formation
may indicate that the Mainlaoo formation was deposited in shallower water than the
American Tickle formation, or llIrbidity currents and possibly bUllom (urrents
periodically or constantly brought oxygenated waters into the basin. Botsford (191111) has
suggested that an increase in bioturbation from the Cooks Brook Formation 10 lhe Middle
Arm Point Formation in the Humber Arm Allochthon indicates an iocrease in bllllum
curremactivlty.
At the main Three Rock Cove section (see appeooix 2. location map I) the
paleocurrent directions are p~edominantly to the south. however at lhe section overlying
the Cape Cormorant Formation south ofthe village ot' Mainland (~appendix 2, location
map I) paleocurrent directions are to lhe nonhwesl.
In Victor's Brook, a locality flOt visited by the author. an occurre:lCe of sandstone
previously imerpretedas a large clast in melange (Williams, 1984} has been reimerllreted
by Corney (1991) as a continuous section through the upper pari of the parautochthon
which is terminated by the basal thrust of the Humber Arm Allochthon. Overlying the
Table Head Group. Corney (1991) has recognised a saooslOne unit similar IU the
Mainland formation which contains in its lower part a limestone conglomerate member
similar to the Daniel's Harbour Member of the American Tickle formation. In the upper
part of the section a number of conglomerate horizons occur which appear similar in
their description to the Howe Harbour member, although large rafts 01" the Ilumber Arm
Allochthon shales are incorporated in the section. The total thickness of the SCl:tion