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NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
North Africa
-
Egypt
-
Sinai Egypt (1)
-
-
-
-
Arctic region
-
Greenland
-
East Greenland (2)
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Atlantic Ocean
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North Atlantic
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Celtic Sea (1)
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North Sea
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Viking Graben (1)
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Atlantic region (1)
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Australasia
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Australia (1)
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Commonwealth of Independent States
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Ukraine
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Crimea Ukraine (1)
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Europe
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Alps
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Eastern Alps
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Northern Limestone Alps (1)
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Limestone Alps
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Northern Limestone Alps (1)
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Central Europe
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Austria
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Tyrol Austria (1)
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Northern Limestone Alps (1)
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Southern Europe
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Greece
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Sterea Ellas
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Attica Greece (1)
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Laurion Greece (1)
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Malta (1)
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Ukraine
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Western Europe
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France
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Dordogne France (1)
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Ireland
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Scandinavia
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Denmark
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Sjaelland (1)
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Norway (1)
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United Kingdom
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Great Britain
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Bristol Channel (5)
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England
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Bath England (4)
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Bristol England (3)
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Cornwall England (2)
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Derbyshire England (1)
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Devon England (10)
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Dorset England (7)
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Gloucestershire England (1)
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Kent England (2)
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Lancashire England (1)
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London Basin (1)
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Northumberland England (1)
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Oxfordshire England (2)
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Pennines (1)
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Somerset England
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Mendip Hills (16)
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South-West England (7)
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Wessex Basin (3)
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Wiltshire England (1)
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Yorkshire England (2)
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Scotland
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Highland region Scotland
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Sutherland Scotland (1)
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Wales
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Glamorgan Wales (4)
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South Wales (2)
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Northern Ireland
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Antrim Northern Ireland (1)
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Lake District (1)
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Midlands (1)
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Peak District (1)
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Severn Valley (1)
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United States
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Eastern U.S. (1)
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Newark Basin (2)
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commodities
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brines (1)
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construction materials
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building stone (1)
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fuller's earth (1)
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limestone deposits (1)
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metal ores
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mineral deposits, genesis (2)
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mineral resources (1)
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elements, isotopes
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carbon
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C-13/C-12 (7)
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C-14 (1)
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organic carbon (2)
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isotope ratios (9)
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isotopes
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radioactive isotopes
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C-14 (1)
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Pb-206/Pb-204 (1)
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stable isotopes
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C-13/C-12 (7)
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O-18/O-16 (2)
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Os-188/Os-187 (1)
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Pb-206/Pb-204 (1)
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S-34/S-32 (1)
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Sr-87/Sr-86 (1)
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metals
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alkaline earth metals
-
calcium
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Mg/Ca (1)
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Sr/Ca (1)
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magnesium
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Mg/Ca (1)
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strontium
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Sr/Ca (1)
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Sr-87/Sr-86 (1)
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cadmium (1)
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iron (1)
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lead
-
Pb-206/Pb-204 (1)
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platinum group
-
osmium
-
Os-188/Os-187 (1)
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-
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rare earths (1)
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rhenium (1)
-
-
oxygen
-
O-18/O-16 (2)
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sulfur
-
S-34/S-32 (1)
-
-
-
fossils
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Chordata
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Vertebrata
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Pisces (1)
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Tetrapoda
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Reptilia
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Diapsida
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Archosauria
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Crocodilia (1)
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Ichthyosauria (1)
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Synapsida
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Therapsida
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Cynodontia (1)
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-
-
-
-
-
-
Invertebrata
-
Arthropoda
-
Mandibulata
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Crustacea
-
Ostracoda
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Podocopida
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Platycopida
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Cytherellidae
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Cytherelloidea (1)
-
-
-
-
-
-
Insecta
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Pterygota
-
Neoptera
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Exopterygota
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Blattaria (1)
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-
-
-
-
-
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Brachiopoda
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Articulata
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Rhynchonellida (1)
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Spiriferida
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Spiriferidina
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Spiriferina (1)
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-
-
-
-
Cnidaria
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Anthozoa (1)
-
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Mollusca
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Bivalvia
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Ostreoidea
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Ostreidae (2)
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Cephalopoda
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Ammonoidea
-
Ammonites (4)
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-
-
Gastropoda
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Pulmonata
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Basommatophora
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Planorbis (2)
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Protista
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Foraminifera (2)
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microfossils
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Conodonta (1)
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problematic microfossils (1)
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palynomorphs
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Plantae
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algae
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Pteridophyta
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Spermatophyta
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Coniferales (1)
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problematic fossils
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geochronology methods
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Cenozoic
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upper Quaternary (1)
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Stone Age
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Tertiary (1)
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Coal Measures (1)
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Mesozoic
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Cretaceous
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Lower Cretaceous
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Upper Cretaceous (1)
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Jurassic
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Lower Jurassic
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Hettangian (1)
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middle Liassic (1)
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Pliensbachian (3)
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Sinemurian (1)
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Toarcian
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lower Toarcian (1)
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Triassic-Jurassic boundary (7)
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upper Liassic (2)
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Middle Jurassic
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Bajocian (2)
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Bathonian (1)
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Triassic
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Upper Triassic
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Carnian (1)
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Keuper (1)
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Mercia Mudstone (9)
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Norian (3)
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Rhaetian
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Penarth Group (5)
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Triassic-Jurassic boundary (7)
-
-
-
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Paleozoic
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Carboniferous
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Lower Carboniferous
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Dinantian (1)
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Namurian (1)
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Upper Carboniferous
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Millstone Grit (1)
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Westphalian (2)
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Devonian (1)
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Permian
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Upper Permian (1)
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Silurian (3)
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Phanerozoic (1)
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igneous rocks
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igneous rocks
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volcanic rocks (2)
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volcanic ash (1)
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K-bentonite (1)
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halides
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fluorides (1)
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K-bentonite (1)
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oxides
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manganite (1)
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pyrolusite (1)
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silicates
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framework silicates
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silica minerals
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quartz (1)
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orthosilicates
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nesosilicates
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zircon group
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zircon (1)
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sheet silicates
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chlorite group
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chlorite (1)
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clay minerals
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montmorillonite (1)
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illite (1)
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sulfates
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anhydrite (1)
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gypsum (2)
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sulfides
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galena (1)
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-
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Primary terms
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absolute age (1)
-
Africa
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North Africa
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Egypt
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Sinai Egypt (1)
-
-
-
-
Arctic region
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Greenland
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East Greenland (2)
-
-
-
Atlantic Ocean
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North Atlantic
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Celtic Sea (1)
-
North Sea
-
Viking Graben (1)
-
-
-
-
Atlantic region (1)
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Australasia
-
Australia (1)
-
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biogeography (2)
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brines (1)
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carbon
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C-13/C-12 (7)
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C-14 (1)
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organic carbon (2)
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Cenozoic
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Quaternary
-
Holocene
-
upper Holocene (2)
-
-
upper Quaternary (1)
-
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Stone Age
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Paleolithic (1)
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Tertiary (1)
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Chordata
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Vertebrata
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Pisces (1)
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Tetrapoda
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Reptilia
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Diapsida
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Archosauria
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Crocodilia (1)
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Ichthyosauria (1)
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-
Synapsida
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Therapsida
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Cynodontia (1)
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clay mineralogy (4)
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climate change (1)
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construction materials
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building stone (1)
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crust (1)
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crystal growth (2)
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crystal structure (5)
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dams (1)
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data processing (1)
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deformation (4)
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diagenesis (6)
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earthquakes (1)
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ecology (1)
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engineering geology (3)
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environmental geology (1)
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Europe
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Alps
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Eastern Alps
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Northern Limestone Alps (1)
-
-
Limestone Alps
-
Northern Limestone Alps (1)
-
-
-
Central Europe
-
Austria
-
Tyrol Austria (1)
-
-
Northern Limestone Alps (1)
-
-
Southern Europe
-
Greece
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Sterea Ellas
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Attica Greece (1)
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Laurion Greece (1)
-
-
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Malta (1)
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Ukraine
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Crimea Ukraine (1)
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Western Europe
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France
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Dordogne France (1)
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Ireland
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Clare Ireland (1)
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Scandinavia
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Denmark
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Sjaelland (1)
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Norway (1)
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United Kingdom
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Great Britain
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Bristol Channel (5)
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England
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Bath England (4)
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Bristol England (3)
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Cornwall England (2)
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Derbyshire England (1)
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Devon England (10)
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Dorset England (7)
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Gloucestershire England (1)
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Kent England (2)
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Lancashire England (1)
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London Basin (1)
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Northumberland England (1)
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Oxfordshire England (2)
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Pennines (1)
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Somerset England
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Mendip Hills (16)
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South-West England (7)
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Wessex Basin (3)
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Wiltshire England (1)
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Yorkshire England (2)
-
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Scotland
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Sutherland Scotland (1)
-
-
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Wales
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Glamorgan Wales (4)
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South Wales (2)
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Northern Ireland
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faults (12)
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geochemistry (10)
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geomorphology (2)
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geophysical methods (4)
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hydrology (2)
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igneous rocks
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volcanic rocks (2)
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intrusions (1)
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Invertebrata
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Arthropoda
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Mandibulata
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Crustacea
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Ostracoda
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Podocopida
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Platycopida
-
Cytherellidae
-
Cytherelloidea (1)
-
-
-
-
-
-
Insecta
-
Pterygota
-
Neoptera
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Exopterygota
-
Blattaria (1)
-
-
-
-
-
-
-
Brachiopoda
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Articulata
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Rhynchonellida (1)
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Spiriferida
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Spiriferidina
-
Spiriferina (1)
-
-
-
-
-
Cnidaria
-
Anthozoa (1)
-
-
Mollusca
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Bivalvia
-
Ostreoidea
-
Ostreidae (2)
-
-
-
Cephalopoda
-
Ammonoidea
-
Ammonites (4)
-
-
-
Gastropoda
-
Pulmonata
-
Basommatophora
-
Planorbis (2)
-
-
-
-
-
Protista
-
Foraminifera (2)
-
-
-
isotopes
-
radioactive isotopes
-
C-14 (1)
-
Pb-206/Pb-204 (1)
-
-
stable isotopes
-
C-13/C-12 (7)
-
O-18/O-16 (2)
-
Os-188/Os-187 (1)
-
Pb-206/Pb-204 (1)
-
S-34/S-32 (1)
-
Sr-87/Sr-86 (1)
-
-
-
limestone deposits (1)
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Berriasian (1)
-
-
Upper Cretaceous (1)
-
-
Jurassic
-
Lower Jurassic
-
Hettangian (1)
-
middle Liassic (1)
-
Pliensbachian (3)
-
Sinemurian (1)
-
Toarcian
-
lower Toarcian (1)
-
-
Triassic-Jurassic boundary (7)
-
upper Liassic (2)
-
-
Middle Jurassic
-
Bajocian (2)
-
Bathonian (1)
-
-
-
Triassic
-
Upper Triassic
-
Carnian (1)
-
Keuper (1)
-
Mercia Mudstone (9)
-
Norian (3)
-
Rhaetian
-
Penarth Group (5)
-
-
Triassic-Jurassic boundary (7)
-
-
-
-
metal ores
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lead ores (3)
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manganese ores (1)
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zinc ores (1)
-
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metals
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alkaline earth metals
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calcium
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Mg/Ca (1)
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Sr/Ca (1)
-
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magnesium
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Mg/Ca (1)
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strontium
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Sr/Ca (1)
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Sr-87/Sr-86 (1)
-
-
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cadmium (1)
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iron (1)
-
lead
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Pb-206/Pb-204 (1)
-
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platinum group
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osmium
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Os-188/Os-187 (1)
-
-
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rare earths (1)
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rhenium (1)
-
-
metamorphic rocks
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metasomatic rocks
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skarn (1)
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mineral deposits, genesis (2)
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mineral resources (1)
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mineralogy (1)
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mining geology (1)
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nuclear facilities (1)
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oil and gas fields (2)
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orogeny (1)
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oxygen
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O-18/O-16 (2)
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paleoclimatology (4)
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paleoecology (10)
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paleogeography (4)
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paleomagnetism (4)
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paleontology (1)
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Paleozoic
-
Carboniferous
-
Lower Carboniferous
-
Dinantian (1)
-
-
Namurian (1)
-
Upper Carboniferous
-
Millstone Grit (1)
-
Westphalian (2)
-
-
-
Devonian (1)
-
Permian
-
Upper Permian (1)
-
-
Silurian (3)
-
-
palynomorphs
-
acritarchs (1)
-
miospores
-
Classopollis (1)
-
pollen (2)
-
-
-
petroleum (3)
-
petrology (2)
-
Phanerozoic (1)
-
Plantae
-
algae
-
nannofossils (1)
-
-
Pteridophyta
-
Lycopsida (1)
-
-
Spermatophyta
-
Gymnospermae
-
Coniferales (1)
-
Pteridospermae (1)
-
-
-
-
plate tectonics (1)
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pollution (2)
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problematic fossils
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problematic microfossils (1)
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roads (1)
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rock mechanics (3)
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sea water (1)
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sea-level changes (5)
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sedimentary petrology (4)
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sedimentary rocks
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bone beds (1)
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carbonate rocks
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limestone
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dolomitic limestone (1)
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micrite (1)
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microbialite (1)
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chemically precipitated rocks
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evaporites (2)
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clastic rocks
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argillite (1)
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marl (2)
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mudstone (8)
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sandstone (1)
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shale (2)
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coal (1)
-
-
sedimentary structures
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biogenic structures
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bioherms (1)
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bioturbation (1)
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secondary structures
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concretions (1)
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geodes (1)
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soft sediment deformation
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clastic dikes (2)
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sedimentation (5)
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sediments
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clastic sediments
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boulders (1)
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clay (1)
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gravel (1)
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sand (2)
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peat (1)
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soil mechanics (2)
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soils (2)
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springs (2)
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stratigraphy (8)
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structural analysis (3)
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structural geology (5)
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sulfur
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S-34/S-32 (1)
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tectonics
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neotectonics (1)
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thermal waters (2)
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tunnels (1)
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United States
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Eastern U.S. (1)
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Newark Basin (2)
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weathering (2)
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well-logging (1)
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sedimentary rocks
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oolite (1)
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sedimentary rocks
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bone beds (1)
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carbonate rocks
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limestone
-
dolomitic limestone (1)
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micrite (1)
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microbialite (1)
-
-
-
chemically precipitated rocks
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evaporites (2)
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-
clastic rocks
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argillite (1)
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marl (2)
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mudstone (8)
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sandstone (1)
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shale (2)
-
-
coal (1)
-
-
-
sedimentary structures
-
sedimentary structures
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biogenic structures
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bioherms (1)
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bioturbation (1)
-
-
secondary structures
-
concretions (1)
-
geodes (1)
-
-
soft sediment deformation
-
clastic dikes (2)
-
-
-
-
sediments
-
oolite (1)
-
sediments
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clastic sediments
-
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Somerset England
Bivalve body-size distribution through the Late Triassic mass extinction event
The influence of weathering on index properties and undrained shear strength for the Charmouth Mudstone Formation of the Lias Group at a site near Banbury, Oxfordshire, UK
Two-pronged kill mechanism at the end-Triassic mass extinction
Abstract This study focuses on a condensed sequence of alternating carbonate–clastic sediments of the Barrington Member, Beacon Limestone Formation (latest Pliensbachian to early Toarcian) from Somerset (SW England). Abundant ammonites confirm (apart from the absence of the Clevelandicum and Tenuicostatum ammonite subchronozones) the presence of Hawskerense Subchronozone to Fallaciosum–Bingmanni subchronozones. Well-preserved, sometimes diverse assemblages of ostracods, foraminifera, nannofossils and low-diversity dinoflagellate assemblages support the chronostratigraphic framework. Stable-isotope analyses demonstrate the presence of a carbon isotope excursion, relating to the Toarcian Oceanic Anoxic Event, within the early Toarcian. Faunal, geochemical and sedimentological evidence suggest that deposition largely took place in a relatively deep-water (subwave base), mid-outer shelf environment under a well-mixed water column. However, reduced benthic diversity, the presence of weakly laminated sediments and changes in microplankton assemblage composition within the Toarcian Oceanic Anoxic Event indicates dysoxic, but probably never anoxic, bottom-water conditions during this event. The onset of the carbon isotope excursion coincides with extinction in the nannofossils and benthos, including the disappearance of the ostracod suborder Metacopina. Faunal evidence indicates connectivity with the Mediterranean region, not previously recorded for the UK during the early Toarcian.
Testing the relationship between marine transgression and evolving island palaeogeography using 3D GIS: an example from the Late Triassic of SW England
Wide-blocky veins explained by dependency of crystal growth rate on fracture surface type: Insights from phase-field modeling
Formation of wide-blocky calcite veins by extreme growth competition
Fracture and conduit controls on groundwater movement in the Carboniferous Limestone of the eastern Mendip Hills, Somerset, England
Abstract Karst science is beginning to recognize and understand better the interaction between conduits and the fractures and/or pore spaces within the aquifer. The relationship has important significance in relation to the understanding of contaminant transport, resource management and dewatering practices. This study presents the results of a dye trace carried out to investigate the link between the aquifer and conduits near a large dewatered quarry in the Mendip Hills in Somerset, England. At the point of undertaking the study, there were no records of the quarry directly intercepting any conduits but water from the conduit(s) is known to be drawn into the quarry. During the study, water from the conduits was observed to be lost to and gained from the fractures in different places in the aquifer. This complexity highlights the dependence of conduit flow on water levels in the aquifer and the sensitivity of groundwater in karstified aquifers to contamination.
A continental record of the Carnian Pluvial Episode (CPE) from the Mercia Mudstone Group (UK): palynology and climatic implications
Somersetite, Pb 8 O(OH) 4 (CO 3 ) 5 , a new complex hydrocerussite-related mineral from the Mendip Hills, England
The hydrocerussite-related phase, NaPb 5 (CO 3 ) 4 (OH) 3 , from the ancient slags of Lavrion, Greece
Lithological control on fracture cementation in the Keuper Marl (Triassic), north Somerset, UK
Combined sea-level and climate controls on limestone formation, hiatuses and ammonite preservation in the Blue Lias Formation, South Britain (uppermost Triassic – Lower Jurassic)
Fracture networks of normal faults in fine-grained sedimentary rocks: examples from Kilve Beach, SW England
Abstract: Interbedded shale and limestone successions in the Kilve Beach area, Bristol Channel Basin, UK, provide insights on fracture networks around normal faults in fine-grained lithologies. Fracture sets with distinct orientations are characteristic of both shale and limestone beds. Shear fractures (mode II) predominate in the shaly units, and they have typically more gentle dips and a larger spread in orientations than extension veins and shear fractures in the limestones. Fracture intensities decrease away from the fault core, but maximum intensities, total number of fractures and widths of the damage zones appear to be independent of throw for normal faults with offsets of less than 20 m. Thus, there is no clear systematic relationship between fault throw and damage zone width in the shales studied by us. However, an asymmetry in the fracture distribution is evidenced by a wider hanging-wall damage zone and differences in fracture orientations in some cases. We interpret the asymmetry and spread in fracture orientations to be the result of propagating fault-tip process zones and the tempo-spatial impact of fault-slip events.
The evolution of growth patterns in mammalian versus nonmammalian cynodonts
Geology and landscape in SW England in the late eighteenth century, as recorded in the travel journals of William George Maton (1774–1840)
Abstract In the summer of 1794 William George Maton, together with his friends Charles Hatchett and Thomas Rackett, embarked on a tour into Cornwall visiting the more southerly parts of Dorset and Devon en route . Rackett and Maton completed a second tour two years later, covering the rest of Dorset and Devon together with Somerset. An account of the tours was subsequently published by Maton, providing a contemporary description of SW England during the latter part of the eighteenth century. This was perhaps the first description of the region by scientifically aware travellers. They explored valleys, descended mines, visited smelters and collected minerals and must be regarded as among the earliest geotourists. Many sites which they visited, such as Roche Rock in Cornwall, Kent’s Cavern in Devon and Wookey Hole in Somerset, became major attractions for geoscientists in the following centuries. Discussions in the text suggest that the travellers looked at the rocks with neptunist eyes. Maton summarized the geological and mineralogical references on a map which used shading with lines rather than colour to differentiate individual strata. Although rudimentary and inaccurate, the map is of considerable historic importance.