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Ineson, P. R., Mitchell, J. G. (1974) K-Ar isotopic age determinations from some Lake District mineral localities. Geological Magazine, 111 (6). 521-537 doi:10.1017/s0016756800041571

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Reference TypeJournal (article/letter/editorial)
TitleK-Ar isotopic age determinations from some Lake District mineral localities
JournalGeological Magazine
AuthorsIneson, P. R.Author
Mitchell, J. G.Author
Year1974 (November)Volume111
Page(s)521-537Issue6
PublisherCambridge University Press (CUP)
DOIdoi:10.1017/s0016756800041571Search in ResearchGate
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Mindat Ref. ID250918Long-form Identifiermindat:1:5:250918:5
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Full ReferenceIneson, P. R., Mitchell, J. G. (1974) K-Ar isotopic age determinations from some Lake District mineral localities. Geological Magazine, 111 (6). 521-537 doi:10.1017/s0016756800041571
Plain TextIneson, P. R., Mitchell, J. G. (1974) K-Ar isotopic age determinations from some Lake District mineral localities. Geological Magazine, 111 (6). 521-537 doi:10.1017/s0016756800041571
In(1974, November) Geological Magazine Vol. 111 (6) Cambridge University Press (CUP)
Abstract/NotesSummaryForty-seven new K—Ar analyses are reported from 15 mines in the Lake District. Analyses of clay mineral concentrates from vein gouges and altered wallrock support a hypothesis of at least 3 distinct isotopic events. Caledonian ages (388 Ma) are reported from the Coniston Copper deposits, while the extensive mineralization in and around the Vale of Newlands indicates a metasomatic event occurring at around 360 Ma. The ages of the sporadic mineral localities to the E of the area (i.e. Greenside, Threlkeld, etc.) are grouped around 325 Ma while those of the Caldbeck Fell deposits are close to 230 Ma. An epidosic model may be advanced for the Carrock Fell Tungsten deposits with a range from 197 to 282 Ma. The geochronological significance of these and other previously published results is considered.

Map of Localities

Locality Pages

LocalityCitation Details
Driggith Mine, Caldbeck, Allerdale, Cumbria, England, UK
Old Sandbed Mine, Caldbeck, Allerdale, Cumbria, England, UK
Old Potts Gill Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK
Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
Caldbeck Fells Mining Region, Cumbria, England, UK
Carrock Mine, Mungrisdale, Eden, Cumbria, England, UK
Lake District National Park, Cumbria, England, UK

Mineral Occurrences

LocalityMineral(s)
Barrow Mine, Above Derwent, Allerdale, Cumbria, England, UKIllite
Driggith Mine, Caldbeck, Allerdale, Cumbria, England, UKā“˜ Muscovite
Old Sandbed Mine, Caldbeck, Allerdale, Cumbria, England, UKā“˜ Illite, ā“˜ Muscovite
Old Potts Gill Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UKā“˜ Illite, ā“˜ Muscovite
Potts Gill Copper Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UKIllite


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