The Quarterly Journal of the Geological Society of London, Volumen 71The Society., 1917 Vols. 1-108 include Proceedings of the society (separately paged, beginning with v. 30) |
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Términos y frases comunes
Abercastle Abersoch abundant Agnostus andalusite appear Arenig Ashgill Ashgillian axial axis band basal brachiopods Caered Cambrian Carboniferous central column Chalk character convex corallites Corals crassiconus crystals deposits described diameter Dibunophyllum dissepiments district Doulting Drift Eocene epitheca extrathecal fault fauna feet felspar folding fossils fragments furrows genus Geol Geological glabella grains granite graptolites grits Hadspen hemera holotype Horizon inches later Limestone Lingula Flags Lithostrotion Llanengan lobe London Clay Lonsdaleia duplicata Lonsdaleia floriformis Lower margin material McCoy medial plate Microdiscus mile mineral Monograptus Mucronatus mudstones Museum Nant-pig Mudstones occur Oolite outcrop Paradoxides pitchstone Porth Gain portion posterior Prof Q. J. G. S. vol quarry quartz Reading Beds Salter sand sandstone sandy seen segment septa Shales similar slightly species specimens strata structure surface Syncline Thanet Beds thickness transverse trilobites Upper Valley Viséan Wales Zone