Abstract
THE Lower Palaeozoic glaciation in the Sahara is rapidly becoming among the best known of fossil glaciations1–3 but because rocks within and below the glacial sequence are poorly fossiliferous it has proved difficult to estimate the duration of glacial conditions. We suggest that the duration of the glacial episode is dated as extending from Lower Cambrian to Middle and perhaps Upper Ordovician by the occurrence in eastern North America of resedimented deposits indicating widespread simultaneous development of submarine canyons in response to glacio-eustatic lowering of sea level.
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BURKE, K., WATERHOUSE, J. Saharan Glaciation Dated in North America. Nature 241, 267–268 (1973). https://doi.org/10.1038/241267a0
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DOI: https://doi.org/10.1038/241267a0
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