Detrital and metamorphic40Ar/39Ar ages from muscovite and whole-rock samples, Meguma Supergroup, southern Nova Scotia

Canadian Journal of Earth Sciences

Volumn 36, Issue 1, 1999, Pages 23-32

  Hicks, Roberta J ^a   Jamieson, Rebecca A ^b   Reynolds, Peter H ^b  

^a MEMORIAL UNIVERSITY OF NEWFOUNDLAND   (Canada)

^b DALHOUSIE UNIVERSITY   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

ARGON-ARGON DATING; DEVONIAN; GEOCHRONOLOGY; METAMORPHIC ROCK; METAMORPHISM;

CANADA;

EID: 0032711980     PISSN: 00084077     EISSN: None     Source Type: Journal    
DOI: 10.1139/e98-081     Document Type: Article

References (37)

1. Bell, W.A. 1960. Mississippian Horton Group of type WindsorHorton district, Nova Scotia. Geological Survey of Canada, Memoir 314.
2. Bouyx, E., Biaise, J., Brice, D., Gourvennec, R., Lardeux, H., and LeMenn, J. 1992. Implications paléogéographiques des affinités nord-gondwaniennes et rhénanes des faunes dévoniennes de la zone de Meguma (Appalaches septentrionales). Comptes Rendus de l'Académie des Sciences de Paris, 315: 337-343.
3. Clarke, D.B., MacDonald, M.A., and Täte, M.C. 1997. Late Devonian mafic-felsic magmatism in thé Meguma Zone, Nova Scotia. In The nature of magmatism in the Appalachian Orogen. Edited by A.K. Sinha, J.B. Whalen, and J.P. Hogan. Geological Society of America, Memoir 191, pp. 107-127.
4. Crosby, D.G. 1962. Wolfville map-area, Nova Scotia (21 HI). Geological Survey of Canada, Memoir 325.
5. Cumming, L.M. 1985. A Halifax slate graptolite locality, Nova Scotia. In Current research, part A. Geological Survey of Canada, Paper 85-1 A, pp. 215-221.
6. 39Ar mineral ages. Canadian Journal of Earth Sciences, 24: 1242-1254.
7. Harnes, W.E., and Bowring, S.A. 1994. An empirical evaluation of the argon diffusion geometry in muscovite. Earth and Planetary Science Letters, 124: 161-167.
8. 39Ar geochronology: methods and applications. In Short course handbook on applications of radiogenic isotope systems to problems in geology. Edited by L. Heaman and J.N. Ludden. Mineralogical Association of Canada, Short Course Handbook, Vol. 19, pp. 27-57.
9. Harland, W.B., Armstrong, R.L., Cox, A.V., Craig, L.E., Smith, A.G., and Smith, D.G. 1990. A geologic time scale 1989. Cambridge University Press, Cambridge, U.K.
10. Hicks, R.J. 1996. Low-grade metamorphism in the Meguma Group, southern Nova Scotia. M.Sc. thesis, Dalhousie University, Halifax, N.S.
11. Home, R.J., and Culshaw, N. 1994. Preliminary evaluation of flexural slip as a folding mechanism and its significance in localizing auriferous veins in the Meguma Group, Nova Scotia. /;: Mines and Mineral Branch, Report of Activities 1993, Nova Scotia Department of Natural Resources, Mines and Energy Branch, Report 94-1, pp. 147-160.
12. 39Ar isotopic data. Canadian Journal of Earth Sciences, 32: 644-659.
13. Keppie, J.D., and Muecke, G.K. (Compilers). 1979. Metamorphic map of Nova Scotia. Scale 1 : 500 000. Nova Scotia Department of Mines and Energy.
14. 39Ar dating of ribbon-textured veins and wallrock material from Meguma lode gold deposits, Nova Scotia: implications for timing and duration of vein formation in slatebelt hosted vein gold deposits. Canadian Journal of Earth Sciences, 35: 746-761.
15. Krogh, T.E., and Keppie, J.D. 1990. Age of detrital zircon and titanite in the Meguma Group, southern Nova Scotia, Canada: clues to the origin of the Meguma Terrane. Tectonophysics, 177: 307-323.
16. Lambert, R.St.J., Chamberlain, V.E., and Muecke, G.K. 1984. RbSr age and geochemistry of the Halifax Formation, Meguma Group, N.S. Geological Association of Canada - Mineralogical Association of Canada, Program with Abstracts, 9: 81.
17. Li, G., Peacor, D.R., Merriman, R.J., Roberts, B., and van der Pluijm, B.A. 1994. TEM and AEM constraints on the origin and significance of chlorite-mica stacks in slates: an example from Central Wales, UK. Journal of Structural Geology, 16: 11391157.
18. Mahoney, K.L. 1996. The contact metamorphic aureole of the South Mountain Batholith, Nova Scotia. M.Sc. thesis, Acadia University, Wolfville, N.S.
19. 39Ar method. Oxford University Press, Oxford, U.K.
20. Milodowski, A.E., and Zalasiewicz, J.A. 1991. The origin and sedimentary, diagenetic and metamorphic evolution of chlorite-mica stacks in Llandovery sediments of central Wales, U.K. Geology Magazine, 128: 263-278.
21. 39Ar studies in the Meguma Zone, Nova Scotia, Canada. Chemical Geology, 73: 153-167.
22. O'Brien, B.H. 1988. A study of the Meguma Terrane in Lunenburg County, Nova Scotia. Geological Survey of Canada, Open File 1823.
23. Poole, W.H. 1971. Graptolites, copper and potassium-argon in Goldenville Formation, Nova Scotia. In Report of activities, part A. Geological Survey of Canada, Paper 71-1A, p. 9.
24. 39Ar dating of cleavage formed during very low-grade metamorphism: a review. In Evolution of metamorphic belts. Edited by J.S. Daly, R.A. Cliff, and B.W.D. Yardley. Geological Society Special Publication (London), no. 43, pp. 161-171.
25. 39Ar stepwise outgassing method. Earth and Planetary Sciences Letters, 40: 111-118.
26. Reynolds, P.H., Kublick, E.E., and Muecke, O.K. 1973. Potassium-argon dating of slates from the Meguma Group, Nova Scotia. Canadian Journal of Earth Sciences, 10: 1059-1067.
27. 39Ar dating standard, MMHb-1. Chemical Geology, 66: 27-34.
28. Schenk, P.E. 1970. Regional variations of the flysch-like Meguma Group (Lower Paleozoic) of Nova Scotia compared to recent sedimentation off the Scotian Shelf. In Flysch sedimentology in North America. Edited by J. Lajoie. Geological Association of Canada, Special Publication 7, pp. 127-153.
29. Schenk, P.E. 1991. Events and sea-level changes on Gondvvana's margin: the Meguma Zone (Cambrian to Devonian) of Nova Scotia, Canada. Geological Society of America Bulletin, 103: 512-521.
30. Schenk, P.E. 1995a. Annapolis Belt. In Geology of the Appalachian-Caledonian Orogen in Canada and Greenland. Edited by H. Williams. Geological Survey of Canada, Geology of Canada, No. 6, Chapt. 4, pp. 367-383. (Also Geological Society of America, The Geology of North America, Vol. F-l.)
31. Schenk, P.E. 1995ft. Meguma Zone. In Geology of the Appalachian-Caledonian Orogen in Canada and Greenland. Edited by H. Williams. Geological Survey of Canada, Geology of Canada, No. 6, Chapt. 3, pp. 261-277. (Also Geological Society of America, The Geology of North America, Vol. F-l.)
32. 39Ar step-heating spectra. Geochimica et Cosmochimica Acta, 62: 123-141.
33. Stea, R.R., Finck, P.W., Pullan, S.E., and Corey, M.C. 1996. Cretaceous deposits of kaolin clay and silica sand in the Shubenacadie and Musquodoboit valleys, Nova Scotia, Canada. Nova Scotia Department of Natural Resources, Minerals and Energy Branch, Open File Report 96-003.
34. Tucker, R.D., and McKerrow, W.S. 1995. Early Paleozoic chronology: a review in light of new U-Pb zircon ages from Newfound-land and Britain. Canadian Journal of Earth Sciences, 32: 368379.
35. Tucker, R.D., Bradley, D.C., Ver Straeten, C.A., Harris, A.G., Ebert, J.R., and McCutcheon, S.R. 1998. New U-Pb zircon ages and the duration and division of Devonian time. Earth and Planetary Sciences Letters, 158: 175-186.
36. Waldron, J.W.F. 1992. The Goldenville-Halifax transition, Mahone Bay, Nova Scotia: relative sea-level rise in the Meguma source terrane. Canadian Journal of Earth Sciences, 29: 1091-1105.
37. Williams, H. 1979. The Appalachian Orogen in Canada. Canadian Journal of Earth Sciences, 16: 792-807.