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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Atlantic Ocean
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North Atlantic
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English Channel (1)
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Europe
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Western Europe
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Ireland (1)
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United Kingdom
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Great Britain
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England
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Cornubian Batholith (2)
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Cornwall England (8)
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Devon England (1)
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South-West England (2)
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commodities
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barite deposits (1)
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brines (1)
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metal ores
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arsenic ores (1)
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Sr-87/Sr-86 (2)
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metals
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strontium
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rare earths
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neodymium
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samarium
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nitrogen (1)
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Primary terms
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Atlantic Ocean
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barite deposits (1)
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carbon
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organic carbon (2)
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Cenozoic
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Quaternary
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upper Pleistocene
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engineering geology (1)
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Europe
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Western Europe
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Ireland (1)
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United Kingdom
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Great Britain
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England
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Cornubian Batholith (2)
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Cornwall England (8)
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faults (1)
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geochemistry (3)
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hydrogen
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igneous rocks
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granites
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pegmatite (2)
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inclusions
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intrusions (4)
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isotopes
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Ar-40/Ar-39 (1)
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Sm-147/Nd-144 (1)
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stable isotopes
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Ar-40/Ar-39 (1)
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C-13/C-12 (1)
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D/H (2)
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Nd-144/Nd-143 (1)
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O-18/O-16 (2)
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Sm-147/Nd-144 (1)
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Sr-87/Sr-86 (2)
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lineation (1)
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magmas (2)
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Mesozoic
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Triassic
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Lower Triassic (1)
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metal ores
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antimony ores (1)
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arsenic ores (1)
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base metals (1)
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copper ores (1)
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gold ores (1)
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iron ores (1)
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lead ores (2)
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lead-zinc deposits (1)
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tin ores (2)
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tungsten ores (1)
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uranium 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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strontium
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Sr-87/Sr-86 (2)
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-
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rare earths
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neodymium
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Nd-144/Nd-143 (1)
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Sm-147/Nd-144 (1)
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samarium
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Sm-147/Nd-144 (1)
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metamorphic rocks
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metamorphism (2)
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mineral deposits, genesis (3)
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nitrogen (1)
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noble gases
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argon
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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 (1)
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Paleozoic
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Porthleven
Short Paper: Palynological evidence from the Porthleven area, south Cornwall: implications for Devonian stratigraphy and Hercynian structural evolution
Nature and origin of banding in the granitic sheets of Tremearne, Porthleven, Cornwall
Fold structures in the Mylor beds, near Porthleven, Cornwall
Shear-folding in the Mylor slates, near Porthleven, Cornwall
Map of the Porthleven area showing the major lithologies and the vein sets ...
Post‐magmatic hydrothermal circulation and the origin of base metal mineralization, Cornwall, UK
Isochores calculated from microthermometric data using the equations of Zh...
Histograms of ( a ) eutectic melting; ( b ) last ice melting; ( c ) hydrate...
Histograms of ( a ) eutectic melting, ( b ) last ice melting, ( c ) hydrate...
The structure of SW Cornwall and its bearing on the emplacement of the Lizard Complex
Volatile production during contact metamorphism: the role of organic matter in pelites
The distribution of ammonium in granites from South-West England
Nd and Sr isotope constraints on the origin of the Cornubian batholith, SW England
The high-temperature behavior of defect hydrogen species in quartz: Implications for hydrogen isotope studies
The origins of late-stage rocks in the St Austell granite—a re-interpretation
Stable isotopes of nonsulphide Zn–Pb ores in Britain and Ireland: fluid characteristics and palaeoclimatic variability
The Cornubian batholith, SW England: D/H and 18 O/ 16 O studies of kaolinite and other alteration minerals
Abstract The Rheic Ocean is a persistent feature of Paleozoic palaeogeographies whose closure contributed to the development of the Variscan Orogen and the formation of Pangaea. Geological and geophysical data indicate repeated episodes of Paleozoic rifting and plate convergence around SW England and the adjacent offshore areas. SW England occupied a lower plate position during the Devonian–Carboniferous, on the northern passive margin of the short-lived Rhenohercynian Ocean that had formed near a recently closed segment of the Rheic Ocean. Variscan plate convergence resulted in the development of the composite southwards-dipping Rheic–Rhenohercynian suture zone by the latest Devonian and inversion of the lower plate basins during the Carboniferous. Early Permian NNW–SSE extensional reactivation of this suture zone controlled the development of the Western Approaches basins in its hanging wall and provides an excellent example of Wilson cycle structural inheritance. The onshore expression of this episode includes shear zones and detachment faults consistent with top-to-the-SSE extensional reactivation of Variscan thrust faults. There is a progression to higher-angle brittle extensional faults that cut out earlier structures. Exhumation of the lower plate was accompanied by Early Permian mantle and concomitant crustal partial melting, the construction of the Cornubian Batholith and W–Sn–Cu fracture-hosted mineralization.
Abstract Hendriks was born in Birmingham, the only child of a prosperous middle-class family. Following the early death of her father she studied geology at Aberystwyth before moving to Belfast, with her widowed mother, as senior demonstrator in the Geology Department. She resigned after a year and subsequently tried unsuccessfully to obtain a permanent post as a geologist, including attempting to join what is now the British Geological Survey. Mapping first in mid-Wales and then in SW England she became an accomplished field geologist, gaining a PhD from Imperial College, London in 1932. Finding fragments of fossil wood in apparently barren sediments, she demonstrated their Devonian age and recognized the presence of thrusting which introduced Ordovician and Silurian rocks into the sequence. Moving permanently to Cornwall in 1938–39, and seeking help from specialists throughout the world, she devoted the rest of her long life to geology, without any institutional support. She received awards from the Geological Society of London and the Royal Geological Society of Cornwall. Living in isolated cottages with her Alsatian dogs, she became respected by the young researchers who flocked to SW England from 1955 onwards, as the energetic doyenne of Cornish geology
The rock coast of the British Isles: weathering and biogenic processes
Abstract An abundance of moisture, salts and organic life make rock coasts a unique weathering environment. Here, mechanical and chemical processes act to break down rocks alongside the influence of waves, tides and geological factors. Organisms concurrently break down (bioweathering and bioerosion) and protect (bioprotection) coastal rocks in direct and indirect ways, enhancing or impeding other inorganic modes of decay. Some species also build physical structures (bioconstruction) that have geomorphological and ecological consequences. Studies of particular weathering processes are well represented in the British Isles, and demonstrate both the overriding controls of lithology and tidal position. The complexities arising from the interactive and combined influences of different processes are also evident. Biogenic processes are of greatest importance for the geomorphology of carbonate rock coasts and cohesive shores in Britain and Ireland, but weathering is largely secondary to waves in the evolution of harder rock coasts. The importance of typically fine-scale rock breakdown in facilitating larger-scale erosion is recognized, however, but warrants more attention, and the value of interdisciplinary and applied weathering research on rock coasts is stressed.