| 21. | The colluvium forms fans, cones and scree slopes, and often contains clay and breccia.
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| 22. | The Pooraka Formation formed in the north west due to increased erosion, resulting in colluvium depositing.
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| 23. | "' Head "'describes solifluctates, and recently eroded soil material, called colluvium.
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| 24. | The slip involved some 5 million cubic metres of sand and colluvium up to 40 metres in thickness.
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| 25. | Boulder colluvium and a glacial till known as the Wisconsinan Till occur along the stream's middle reaches.
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| 26. | Boulder Colluvium occurs in the lower reaches of the valley and contains boulders consisting of quartz, sandstone, and conglomerate.
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| 27. | Sandy soils, rock outcrops and rubble and stony colluvium account for over 70 % of the land area in the basin.
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| 28. | Further upstream, the surficial geology features bedrock consisting of sandstone and shale, with Boulder Colluvium occurring on a nearby upland.
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| 29. | Further upstream in the valley, there is Wiscoinsnan Bouldery Till, more Boulder Colluvium, and a patch of Wisconsinan Till.
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| 30. | In the upper and middle reaches of Bee Sellers Hollow, the surficial geology consists of colluvium and alluvium along the valley floor.
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