A Rb-Sr whole rock isochron for the Stockdale Rhyolite of the English Lake District and a revised mid-Palaeozoic time-scale
- 1 March 1979
- journal article
- Published by Geological Society of London in Journal of the Geological Society
- Vol. 136 (2) , 235-242
- https://doi.org/10.1144/gsjgs.136.2.0235
Abstract
The extrusion of the Stockdale Rhyolite, an upper Ordovician lava lying within Zone 2 of the Cautleyan Stage of the Ashgill, is dated by the Rb-Sr whole rock isochron method at 421 ± 3 Ma. This datum is more precise than any published Lower Palaeozoic age. Samples of the rhyolite from within the thermal aureole of the Shap Granite show Rb-Sr systematics apparently unaffected by baking. A revised mid-Palaeozoic time-scale is presented.This publication has 24 references indexed in Scilit:
- The chronology of the Nakhla achondritic meteoritePublished by Elsevier ,2002
- The Age of the Hoy Lavas, OrkneyScottish Journal of Geology, 1977
- Subdivision of Ordovician and Silurian time scale using accumulation rates of graptolitic shaleGeology, 1977
- The geological interpretation of a gravity survey of the English Lake District and the Vale of EdenJournal of the Geological Society, 1974
- The age of orogenic deformation in the Swedish CaledonidesAmerican Journal of Science, 1974
- Realistic use of two‐error regression treatments as applied to rubidium‐strontium dataReviews of Geophysics, 1972
- A Rb-Sr study of the lower silurian stage circle Shale, Canberra, AustraliaGeochimica et Cosmochimica Acta, 1970
- Emplacement and Thermal History of a Rhyolite Lava Flow near Fortymile Canyon, Southern NevadaGSA Bulletin, 1966
- Potassium–Argon Age Measurements on Two Igneous Rocks from the Ordovician System of ScotlandNature, 1965
- The Shap Granite, and the Associated Igneous and Metamorphic RocksQuarterly Journal of the Geological Society, 1891