| 1. | It is in the Yarralumla Formation in Tuffacious sandstone and siltstone.
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| 2. | The State Circle Shale is composed of laminated shales and siltstone.
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| 3. | The Chugwater consists mainly of siltstone and shales with interspersed sandstones.
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| 4. | To the north, it grades into the siltstone Borden Formation.
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| 5. | Layers of shungite rocks interspersed with tuffs, dolomite and siltstone.
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| 6. | The outer wall is thick in places and constructed from Siltstone ashlar.
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| 7. | Internal layers of mudstone, conglomerate and siltstone interrupt the limestone horizontally.
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| 8. | Sediments are a mixture of fluvial conglomerates, sandstones, and siltstones.
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| 9. | By the top of the column, siltstones and claystones become dominant.
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| 10. | It consists of sedimentary rocks such as sandstone, siltstone and claystone.
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