The Quarterly Journal of the Geological Society of London, Volumen 102The Society., 1947 Vols. 1-108 include Proceedings of the society (separately paged, beginning with v. 30) |
Índice
VOLUME CII | 2 |
SUMMARY | 47 |
to the detailed structural evidence is missing The missing portion moreover | 74 |
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Términos y frases comunes
amphibole anomaly appear banded ironstones Barmouth basic basin beds biotite Cambrian Cape Carboniferous chambers chemical coal composition deposits desilication displacement dolerite dykes east eastern erosion evidence faunas feet felspar flags folding foraminifera formation fossils fracture Fund Gamlan genus Geol geological geologists Glen Fault Goldfield granite gravity greenstone Grits grunerite Harlech Highlands horizon igneous rocks inclusions intrusion iron jasper bars Jurassic Karroo laccolith Lake later limestone Lower magnetite Manganese marine mass megalosphere metamorphism miles milligals minerals Miocene movement north-west occur Old Red Sandstone Ophthalmidium Ordovician original outcrop Palaeozoic peneplain plagioclase plateau Poulsen Pre-Cambrian present probably pyroxene quartz quartzite region Rhinog Rift scarps schists seams sedimentary sediments shales side siliceous Silurian similar species specimens Spiroloculina spores stage strata structure surface Surv thickness troctolites types Upper Valley variation vertical Welfield Ridge western xenolith zone کر