BritishGeological SurveyNATURAL ENVIRONMENT RESEARCH COUNCIL
(The map shows the major geological units andtheir principalbuilding stone resources)
WWW.bgs.ac.uk
GEOLOGICAL MAP OF THE UK
SEDIMENTARY ROCKS
IGNEOUS ROCKS
METAMORPHIC ROCKS
TERTIARY(sanstone (sarsen))
TRIASSIC(sandstone (red and white)
PERMIAN(sandstone (red) and dolomitic limestones)
DEVONIAN (OLD RED SANDSTONE)(sandstone-purple, red and green)
PRE-CAMBRIAN(gneiss, schist, marble)
GRANITES and other coarse grained rocks(red and grey)
LOWER PALAEOZOIC (CAMBRIAN, ORDOVICIAN, SILURIAN)(metamorphic slates-purple, grey and green)
CRETACEOUS (UPPER)(chalk and flint)
CARBONIFEROUS (UPPER)(Coal Measures and Millstone Grit sandstones)
CARBONIFEROUS (LOWER)(limestones and sandstones)
JURASSIC (UPPER)(ooidal limestones)
JURASSIC (MIDDLE)(ooidal limestones, sandstones and fissile limestones)
JURASSIC (LOWER)(limestones and ironstones)
CRETACEOUS (LOWER)(sandstones and limestones)
AGE(millions of years)
65 my
142 my
205 my
248 my
290 my
354 my
417 my
545 my
2900+ my