Cope, J. C. W., Rushton, A. W. A. (1992) Cambrian and early Tremadoc rocks of the Llangynog Inlier, Dyfed, South Wales. Geological Magazine, 129 (5) 543-552 doi:10.1017/s0016756800021701
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Cambrian and early Tremadoc rocks of the Llangynog Inlier, Dyfed, South Wales | ||
| Journal | Geological Magazine | ||
| Authors | Cope, J. C. W. | Author | |
| Rushton, A. W. A. | Author | ||
| Year | 1992 (September) | Volume | 129 |
| Issue | 5 | ||
| Publisher | Cambridge University Press (CUP) | ||
| DOI | doi:10.1017/s0016756800021701Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 255474 | Long-form Identifier | mindat:1:5:255474:1 |
| GUID | 0 | ||
| Full Reference | Cope, J. C. W., Rushton, A. W. A. (1992) Cambrian and early Tremadoc rocks of the Llangynog Inlier, Dyfed, South Wales. Geological Magazine, 129 (5) 543-552 doi:10.1017/s0016756800021701 | ||
| Plain Text | Cope, J. C. W., Rushton, A. W. A. (1992) Cambrian and early Tremadoc rocks of the Llangynog Inlier, Dyfed, South Wales. Geological Magazine, 129 (5) 543-552 doi:10.1017/s0016756800021701 | ||
| In | (1992, September) Geological Magazine Vol. 129 (5) Cambridge University Press (CUP) | ||
| Abstract/Notes | AbstractUntil recently no Cambrian rocks were known in the Llangynog area. Detailed mapping has now revealed a succession of ?Lower and Upper Cambrian rocks overlain by Tremadoc rocks. The Allt y Shed Sandstones (new) rest unconformably on the Precambrian, but have yielded no diagnostic fossils and are tentatively assigned to the Comley Series. Succeeding with faulted or unconformable contact is an Upper Cambrian Merioneth Series succession which includes in ascending order: conglomerates, sandstones and siltstones with olenid trilobites and resembling the Treffgarne Bridge Beds of the Haverfordwest area; micaceous shales and siltstones referred to the Ffestiniog Flags Formation; and black mudstones with calcareous concretions and a rich olenid fauna referred to the Dolgellau Formation. Succeeding the latter with possible disconformity is a succession belonging to the lower part of the Tremadoc Series and earlier than any rocks of that series hitherto recorded from the area. | ||
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