| 31. | Precambrian rock is the major component of the bedrock.
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| 32. | Beneath the glacial till lies Cambrian and Precambrian bedrock.
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| 33. | The side of the pit consists of Precambrian gabbro.
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| 34. | The intrusive rocks ( late Precambrian ) are in part covered by sand.
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| 35. | SRC also mapped the groundwater resources in Saskatchewan south of the Precambrian Shield.
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| 36. | The rocks range in age from Precambrian to Miocene.
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| 37. | Surely these are the Ediacaran biota from the Earth in the late Precambrian?
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| 38. | The only Precambrian rock unit is the Baltimore Gneiss.
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| 39. | The uranium occurs as pitchblende in a hydrothermal vein deposit in Precambrian granite.
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| 40. | The oldest Precambrian rocks are the Ulverstone Metamorphic Complex and Forth Metamorphic Complex.
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