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PERMIAN PLANTS OF AUSTRALIA

Assemblages: The Ewington Coal Measures: Stockton Pit Flora

Specimens by taxa
Taxa recorded

The Stockton Pit was an underground and open-cut coal mine that operated in the central Collie Basin, southwestern Australia in the early part of the 20th century. The mine closed around 1960 and the pit has filled with water and is now used as a recreational area. Mining operations at Stockton extracted coal from the Ewington Formation (in the stratigraphic scheme of Le Blanc Smith 1993). This unit is interpreted to be of Artinskian age based on palynostratigraphy (Backhouse 1991). Although some overburden dumps remain around the Stockton minesite, they are deeply weathered and this, together with flooding of the Stockton pit, prevents further collection of good quality fossils from this site. Minor studies of specific plant taxa from the Ewington Coal Measures have been published (e.g. Rigby 1966, 1993, Rigby et al. 1988,) but no systematic survey of the flora has been undertaken.
 
NRM holds around 19 specimens from the Stockton Pit collected in 1949 by Olof Selling. The slabs bear large equisetalean axis impressions (Paracalamites australis) and glossopterid leaf compressions (mostly Glossopteris ewingtonensis).

References

Le Blanc Smith, G., 1993. Geology and Permian coal resources of the Collie Basin, Western Australia. Geological Survey of Western Australia Report 38, 1-86.

Rigby, J.F. 1966. The Lower Gondwana floras of the Perthand Collie Basins ,Western Australia. Palaeontographica 118B, 113-152.

Rigby, J., 1993. Plants. In: Skwarko, S.K. (Ed.), Palaeontology of the Permian of Western Australia. Geological Survey of Western Australia Bulletin 136, 77-83.

Rigby, J.F., Chandra, S. & Surange, K.R., 1988. Glossopterid plant remains in the Permian of Western Australia. Association of Australasian Palaeontologists Memoir 5, 73-78.

Abandoned entrance to the old Stockton underground mine, which closed in 1960. Photo: S. McLoughlin 1991.

Senast ändrad 02 May 2017 10:33
Sidansvarig: Anna Lindström, Förste assistent
Anna.Lindstrom@nrm.se

Distribution of Permian sedimentary basins in Australia, with the Stockton Mine area highlighted.

The lake created after flooding of the Stockton open-cut coal pit is now used as a recreational area. Cliffs on the far side of the lake represent weathered exposures of the Lower Cretaceous Nakina Formation, which overlie the Permian coal measures across much of the Collie Basin. Photo: S. McLoughlin 1991.