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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Europe
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Western Europe
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United Kingdom
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Great Britain
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England
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Cornwall England (1)
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Derbyshire England (1)
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Grand Canyon (1)
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United States (1)
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geologic age
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Cenozoic
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Quaternary
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Holocene
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upper Holocene (1)
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Paleozoic
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Permian
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Kaibab Formation (1)
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Primary terms
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Cenozoic
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Quaternary
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Holocene
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upper Holocene (1)
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deformation (1)
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Europe
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Western Europe
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United Kingdom
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Great Britain
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England
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Cornwall England (1)
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Derbyshire England (1)
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faults (1)
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ground water (1)
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Paleozoic
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Permian
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Kaibab Formation (1)
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structural analysis (1)
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tectonics (1)
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United States (1)
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Merlin Cavern
Three centuries of open access to the caves in Stoney Middleton Dale Site of Special Scientific Interest, Derbyshire
Abstract The limestone caves of Stoney Middleton Dale are a Site of Special Scientific Interest (SSSI) for features of geological interest, but have been open access since at least the eighteenth century and have a documented history of geotourism. Using the examples of Carlswark Cavern and Merlin Cavern, this chapter sets out evidence that 300 years of open access has resulted in significant disturbance to the features of geological interest. In particular, the integrity of the overall site for scientific research was affected by historical removal of speleothem formations long before it became a SSSI, with damage still occurring today. As most cave SSSIs in Derbyshire have historically had similar open-access arrangements, the examples presented highlight that there is potential for the integrity of less well historically documented caves elsewhere to have been disturbed. This article highlights the importance of establishing a baseline of historical disturbance to recognize whether the integrity of cave SSSIs have been affected and help monitor if disturbance is still occurring. For cave SSSIs to be useful for geological research, it is suggested that there is a need for the historical legacy of open access to individual caves elsewhere to be better understood.
Discussion
The Padstow Confrontation, north Cornwall: a reappraisal
SEG Discovery 133 (April)
SEG Newsletter 27 (October)
Abstract The Kaibab Plateau and Grand Canyon National Park in the USA contain both shallow and deep karst systems, which interact in ways that are not well known, although recent studies have allowed better interpretations of this unique system. Detailed characterization of sinkholes and their distribution on the surface using geographical information system and LiDAR data can be used to relate the infiltration points to the overall hydrogeological system. Flow paths through the deep regional geological structure were delineated using non-toxic fluorescent dyes. The flow characteristics of the coupled aquifer system were evaluated using hydrograph recession curve analysis via discharge data from Roaring Springs, the sole source of the water supply for the Grand Canyon National Park. The interactions between these coupled surface and deep karst systems are complex and challenging to understand. Although the surface karst behaves in much the same way as karst in other similar regions, the deep karst has a base flow recession coefficient an order of magnitude lower than many other karst aquifers throughout the world. Dye trace analysis reveals rapid, conduit-dominated flow that demonstrates fracture connectivity along faults between the surface and deep karst. An understanding of this coupled karst system will better inform aquifer management and research in other complex karst systems.