| 11. | Along most of the length of Karnes Hollow, the surficial geology features colluvium.
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| 12. | Colluvium contains clasts made of shale and sandstone.
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| 13. | Some patches of Boulder Colluvium are also present.
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| 14. | Deposits of detrital colluvium can reveal the soil composition and signify processes of chemical weathering.
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| 15. | Colluvium can also be found in the vicinity of the stream's lower reaches.
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| 16. | However, near its mouth, there is an area of alluvium and Boulder Colluvium.
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| 17. | The surficial geology in the vicinity of York Hollow mainly consists of alluvium and colluvium.
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| 18. | It is lithified colluvium or scree.
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| 19. | For these same reasons, alluvium is also generally well sorted material while colluvium is not.
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| 20. | The Pooraka Formation formed in the north west due to increased erosion resulting in colluvium depositing.
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