| Reference Type | Journal (article/letter/editorial) |
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| Title | The Lower Jurassic phosphorites of southeastern British Columbia and terrane accretion to western North America |
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| Journal | Canadian Journal of Earth Sciences |
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| Authors | Poulton, T. P. | Author |
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| Aitken, J. D. | Author |
| Year | 1989 (August 1) | Volume | 26 |
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| Issue | 8 |
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| Publisher | Canadian Science Publishing |
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| DOI | doi:10.1139/e89-137Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 480602 | Long-form Identifier | mindat:1:5:480602:2 |
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| GUID | 0 |
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| Full Reference | Poulton, T. P., Aitken, J. D. (1989) The Lower Jurassic phosphorites of southeastern British Columbia and terrane accretion to western North America. Canadian Journal of Earth Sciences, 26 (8) 1612-1616 doi:10.1139/e89-137 |
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| Plain Text | Poulton, T. P., Aitken, J. D. (1989) The Lower Jurassic phosphorites of southeastern British Columbia and terrane accretion to western North America. Canadian Journal of Earth Sciences, 26 (8) 1612-1616 doi:10.1139/e89-137 |
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| In | (1989, August) Canadian Journal of Earth Sciences Vol. 26 (8) Canadian Science Publishing |
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| Abstract/Notes | Sinemurian phosphorites in southeastern British Columbia and southwestern Alberta conform with the "West Coast type" phosphorite depositional model. The model indicates that they were deposited on or near the Early Jurassic western cratonic margin, next to a sea or trough from which cold water upwelled. This suggests that the allochthonous terrane Quesnellia lay well offshore in Sinemurian time. The sea separating Quesnellia from North America was partly floored by oceanic crust ("Eastern Terrane") and partly by a thick sequence of rifted, continental terrace wedge rocks comprising the Purcell Supergroup and overlying Paleozoic sequence. This sequence must have been depressed sufficiently that access of upwelling deep currents to the phosphorite depositional area was not impeded. |
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