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Elles, G. L. (1937) The Classification of the Ordovician Rocks. Geological Magazine, 74 (11) 481-495 doi:10.1017/s0016756800089962

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Reference TypeJournal (article/letter/editorial)
TitleThe Classification of the Ordovician Rocks
JournalGeological Magazine
AuthorsElles, G. L.Author
Year1937 (November)Volume74
Issue11
PublisherCambridge University Press (CUP)
DOIdoi:10.1017/s0016756800089962
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Mindat Ref. ID246725Long-form Identifiermindat:1:5:246725:6
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Full ReferenceElles, G. L. (1937) The Classification of the Ordovician Rocks. Geological Magazine, 74 (11) 481-495 doi:10.1017/s0016756800089962
Plain TextElles, G. L. (1937) The Classification of the Ordovician Rocks. Geological Magazine, 74 (11) 481-495 doi:10.1017/s0016756800089962
In(1937, November) Geological Magazine Vol. 74 (11) Cambridge University Press (CUP)
Abstract/NotesThe classification of the British Ordovician Rocks has gone through many phases of instability in the past, and at the present time seems to be passing through another such phase. There are probably many causes contributing to this state of things, two of which seem to be fundamental; the first, the differentfacies of development exhibited in different districts by the formations making up the system; the second, the varied elements entering into the composition of the shallow water faunas apart from the considerations of facies; these would seem to be governed largely by possibilities of migration into the British region of the Lower Palaeozoic geosyncline from different directions, i.e. from America, from Northern Europe, and from Central Europe, so that a different type of “shelly” fauna characterizes the north-west and south-east margins.


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