8.6.2 Ohio Range Devonian:Horlick Formation

During the 1979/80 field season a group of New Zealand geologists led by M.A. Bradshaw returned to the Ohio Range in order to examine more closely the environment of deposition of the Early Devonian Horlick Formation. The group confirmed that brachiopods, mollusks, trilobites, crinoids, fish bones, and trace fossils occur at all levels in this formation and that it was indeed deposited in a marine environment in contrast to most sedimentary rocks of the Beacon Supergroup which are predominantly of non-marine origin (Bradshaw and McCartan 1983). 

Glacier), and on granitic basement rocks in the Queen Maud Mountains between the Shackleton Glacier and the Wisconsin Range. In the Ohio Range, the Buckeye TiUite rests discon-formably on the Devonian Horlick Formation (Adapted from... 

Bradshaw MA (1981) Palaeoenvironmental interpretations and systematics of Devonian trace fossils from the Taylor Group, Antarctica. New Zealand J Geol Geophys 24 615-652 Bradshaw MA, McCartan LM (1983) The depositional environment of the Lower Devonian Horlick Formation, Ohio Range. In Oliver RL et al. Antarctic Earth Science. Australian Acad. Sci. 238-241... 

Fig. 10.21 The geology of the Ohio Range includes a basement of Cambrian granitic rocks overlain by 700 m of flat-lying sedimentary rocks of the Beacon Supergroup which contains four formations identified in the diagram. The Horlick Formation consists of Early Devonian marine semdstones and shales containing invertebrate fossils. The overlying Buckeye Tillite was deposited...

Young, V.T. (1986) Early Devonian fish material from the Horlick Formation, Ohio Range, Antarctica , Alcheringa, 10, 35 4. 

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