The Quarterly Journal of the Geological Society of London, Volumen 115The Society, 1960 Vols. 1-108 include Proceedings of the society (separately paged, beginning with v. 30) |
Índice
October 7 28 November 11 25 December | 6 |
W G E CALDWELL The Lower Carboniferous rocks | 9 |
afternoon and evening | 22 |
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Términos y frases comunes
anticline appear Arklow axial plane bands black shales breccia Calcareous Group Cambrian Carboniferous Cavetown chert clay pebble conglomerate crinoidal Croghan Culm Measures deposits developed dolerite dykes east emplacement evidence exposures feet thick feldspar fine-grained folds formation fossils fragments Geol Geological glacial Goniatites granite granophyre grey igneous Interglacial intrusion Isingiro joints lavas Limestone Group limestones Llyn Lower Culm margin Meldon Quarry metasomatism Middle Sand miles mineralization movement mudstone Mynydd Moel Nar Valley normal faults normal limb north-east north-west northern occur Ordovician outcrop Pleistocene plunge pollen porphyritic quartz Quartzite Group quartzites Red Beds reef reverse fault rhyolitic sandstone sedimentary sediments Shale and Quartzite shales sill similar slates slaty cleavage south-east south-west stratigraphical structures succession suggested surface sutures syncline tectonic thrust trend trilobites tuffs Upper Acid Group Upper Basic Group Volcanic Group volcanic rocks weathering zone