Bevins, R. E., Pharaoh, T. C., Cope, J. C. W., Brewer, T. S. (1995) Geochemical character of Neoproterozoic volcanic rocks in southwest Wales. Geological Magazine, 132 (3) 339-349 doi:10.1017/s0016756800013649
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Geochemical character of Neoproterozoic volcanic rocks in southwest Wales | ||
| Journal | Geological Magazine | ||
| Authors | Bevins, R. E. | Author | |
| Pharaoh, T. C. | Author | ||
| Cope, J. C. W. | Author | ||
| Brewer, T. S. | Author | ||
| Year | 1995 (May) | Volume | 132 |
| Issue | 3 | ||
| Publisher | Cambridge University Press (CUP) | ||
| DOI | doi:10.1017/s0016756800013649Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 256598 | Long-form Identifier | mindat:1:5:256598:3 |
| GUID | 0 | ||
| Full Reference | Bevins, R. E., Pharaoh, T. C., Cope, J. C. W., Brewer, T. S. (1995) Geochemical character of Neoproterozoic volcanic rocks in southwest Wales. Geological Magazine, 132 (3) 339-349 doi:10.1017/s0016756800013649 | ||
| Plain Text | Bevins, R. E., Pharaoh, T. C., Cope, J. C. W., Brewer, T. S. (1995) Geochemical character of Neoproterozoic volcanic rocks in southwest Wales. Geological Magazine, 132 (3) 339-349 doi:10.1017/s0016756800013649 | ||
| In | (1995, May) Geological Magazine Vol. 132 (3) Cambridge University Press (CUP) | ||
| Abstract/Notes | AbstractVolcanic rocks of Neoproterozoic age form several fault-related inliers in Wales and the Welsh Borderland. Those in North Wales and the Borderland have been investigated recently, while those in southwest Wales remain little studied. In southwest Wales, basic to intermediate lavas and related volcaniclastic rocks and silicic tuffs in the St David’s area comprise the Pebidian Supergroup, which is intruded by minor basic intrusions, while the Coomb Volcanic Formation, exposed farther east around Llangynog, is composed of basic and silicic lavas and silicic tuffs, intruded by a single dacite sill and numerous dolerite sills. New geochemical data show that both the Pebidian and Coomb basalts have subduction-related characteristics. The Coomb basalts are geochemically similar to those of the Uriconian Group of the Welsh Borderland, while the Pebidian basalts bear a similarity to volcanic rocks recovered from the Bryn-teg Borehole, in the Harlech Dome. Uriconian-type volcanic rocks may underlie much of the Midlands Microcraton, with the Welsh area underlain by volcanic rocks of Pebidian type. | ||
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