|
SHORT PAPER |
Department of Earth Sciences, Parks Road, OxfordOX1 3PR, UK
Nd values and clast petrography of the Longmyndian sediments of Shropshire indicate a provenance dominated by juvenile (high Nd(t)) Uriconian volcanic sources, but with an increasing detrital contribution from older (low Nd(t)) metamorphic sources up-section. By contrast, most Lower Palaeozoic strata of England and Wales have low Nd(t)) values, typical of sediments derived from long established continental crust. The Sm–Nd isotopic evidence suggests that Avalonia received sediment from an adjacent large continent in the Cambrian to Lower Ordovician and in the Silurian. Ordovician and Silurian volcanicity supplied juvenile detritus only during and shortly after active volcanism.
This article has been cited by other articles:
 |
|
 |
|
  R. D. Nance, J. B. Murphy, R. A. Strachan, J. D. Keppie, G. Gutierrez-Alonso, J. Fernandez-Suarez, C. Quesada, U. Linnemann, R. D'lemos, and S. A. Pisarevsky Neoproterozoic-early Palaeozoic tectonostratigraphy and palaeogeography of the peri-Gondwanan terranes: Amazonian v. West African connections Geological Society, London, Special Publications, 2008; 297: 345 - 383. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 N.H. WOODCOCK, N.J. SOPER, and R.A. STRACHAN A Rheic cause for the Acadian deformation in Europe Journal of the Geological Society, 2007; 164: 1023 - 1036. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 T. C. Pharaoh, J. A. Winchester, J. Verniers, A. Lassen, and A. Seghedi The Western Accretionary Margin of the East European Craton: an overview Geological Society, London, Memoirs, 2006; 32: 291 - 311. [Abstract] [PDF]
|
|
|
|
 |
|
 B. ANDERS, T. REISCHMANN, D. KOSTOPOULOS, and U. POLLER The oldest rocks of Greece: first evidence for a Precambrian terrane within the Pelagonian Zone Geological Magazine, 2006; 143: 41 - 58. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. MCILROY, T. P. CRIMES, and J. C. PAULEY Fossils and matgrounds from the Neoproterozoic Longmyndian Supergroup, Shropshire, UK Geological Magazine, 2005; 142: 441 - 455. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. B. Murphy, J. Fernandez-Suarez, and T. E. Jeffries Lithogeochemical and Sm-Nd and U-Pb isotope data from the Silurian-Lower Devonian Arisaig Group clastic rocks, Avalon terrane, Nova Scotia: A record of terrane accretion in the Appalachian-Caledonide orogen Geological Society of America Bulletin, 2004; 116: 1183 - 1201. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. Verniers, T. Pharaoh, L. Andre, T.N. Debacker, W. De Vos, M. Everaerts, A. Herbosch, J. Samuellson, M. Sintubin, and M. Vecoli The Cambrian to mid Devonian basin development and deformation history of Eastern Avalonia, east of the Midlands Microcraton: new data and a review Geological Society, London, Special Publications, 2002; 201: 47 - 93. [Abstract] [PDF]
|
|
|
|
|
|
J. Samuelsson, A. Gerdes, L. Koch, T. Servais, and J. Verniers Chitinozoa and Nd isotope stratigraphy of the Ordovician rocks in the Ebbe Anticline, NW Germany Geological Society, London, Special Publications, 2002; 201: 115 - 131. [Abstract] [PDF]
|
|
|
|
|
|
A. Zeh, A. ZEH, H. BRATZ, I. L. MILLAR, and I. S. WILLIAMS A combined zircon SHRIMP and Sm-Nd isotope study of high-grade paragneisses from the Mid-German Crystalline Rise: evidence for northern Gondwanan and Grenvillian provenance Journal of the Geological Society, 2001; 158: 983 - 994. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 Proto-Avalonia: A 1.2-1.0 Ga tectonothermal event and constraints for the evolution of Rodinia Geology, 2000; 28: 1071 - 1074.
|
|
|
|
 |
|
 Late Diagenetic Redistribution of Uranium and Disturbance of the U-Pb Whole Rock Isotope System in a Black Shale Journal of Sedimentary Research, 2000; 70: 1234 - 1245.
|
|
|
|
|
|
A. KRONER and E. HEGNER Geochemistry, single zircon ages and Sm-Nd systematics of granitoid rocks from theGory Sowie (Owl Mts), Polish West Sudetes: evidence for earlyarc-related plutonism Journal of the Geological Society, 1998; 155: 711 - 724. [Abstract] [PDF]
|
|
|
|
|
|
D. McILROY, M. D. BRASIER, and J. B. MOSELEY The Proterozoic-Cambrian transition within the 'Charnian Supergroup' of central England and the antiquity of the Ediacara fauna Journal of the Geological Society, 1998; 155: 401 - 411. [Abstract] [PDF]
|
|
|
|
|
|
C. R. Van Staal, J. F. Dewey, C. M. Niocaill, and W. S. McKerrow The Cambrian-Silurian tectonic evolution of the northern Appalachians and British Caledonides: history of a complex, west and southwest Pacific-type segment of Iapetus Geological Society, London, Special Publications, 1998; 143: 197 - 242. [Abstract] [PDF]
|
|
|
|
|
|
B. W. GLOVER, M. J. LENG, and J. I. CHISHOLM A second major fluvial sourceland for the Silesian Pennine Basin of northern England Journal of the Geological Society, 1996; 153: 901 - 906. [Abstract] [PDF]
|
|
|
|
|
|
W. D. McCaffrey and B. C. Kneller Silurian turbidite provenance on the northern Avalonian margin Journal of the Geological Society, 1996; 153: 437 - 450. [Abstract] [PDF]
|
|
|
|
|
|
W. D. McCAFFREY Sm-Nd isotopic characteristics of sedimentary provenance: the Windermere Supergroup of NW England Journal of the Geological Society, 1994; 151: 1017 - 1021. [Abstract] [PDF]
|
|
|
|
|
|
L. R. M. COCKS and W. S. McKERROW A reassessment of the early Ordovician 'Celtic' brachiopod province Journal of the Geological Society, 1993; 150: 1039 - 1042. [Abstract] [PDF]
|
|
|
|
|
|
S. P. TODD, F. C. MURPHY, and P. S. KENNAN On the trace of the Iapetus suture in Ireland and Britain Journal of the Geological Society, 1991; 148: 869 - 880. [Abstract] [PDF]
|
|
