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Nichols, R. A. H. (1966) Petrology of an Irregular-Nodule Bed, Lower Carboniferous, Anglesey, North Wales. Geological Magazine, 103 (6) 477-486 doi:10.1017/s0016756800054182

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Reference TypeJournal (article/letter/editorial)
TitlePetrology of an Irregular-Nodule Bed, Lower Carboniferous, Anglesey, North Wales
JournalGeological Magazine
AuthorsNichols, R. A. H.Author
Year1966 (December)Volume103
Issue6
PublisherCambridge University Press (CUP)
DOIdoi:10.1017/s0016756800054182Search in ResearchGate
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Mindat Ref. ID249697Long-form Identifiermindat:1:5:249697:3
GUID0
Full ReferenceNichols, R. A. H. (1966) Petrology of an Irregular-Nodule Bed, Lower Carboniferous, Anglesey, North Wales. Geological Magazine, 103 (6) 477-486 doi:10.1017/s0016756800054182
Plain TextNichols, R. A. H. (1966) Petrology of an Irregular-Nodule Bed, Lower Carboniferous, Anglesey, North Wales. Geological Magazine, 103 (6) 477-486 doi:10.1017/s0016756800054182
In(1966, December) Geological Magazine Vol. 103 (6) Cambridge University Press (CUP)
Abstract/NotesAbstractSome of the nodules described are similar to trace-fossils described by Donaldson and Simpson and some ichnofossils described by Seilacher, but many appear to be structures produced by sedimentary boudinage. These do not seem to be a result of organic or concretionary action. It is suggested that currents deposited thin bioclastic calcarenites with interbeds of calcite silt, and that crinoids and coral patches developed only sporadically during deposition. A few scavengers reworked the bioclastic calcarenites and calcite silt layers thus forming the trace-fossils; many of the irregular-nodules, however, were probably formed by differential compaction and segregation in the calcite silt beds, and may represent sedimentary boudins, which are relicts of former layers.


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