The paleomagnetic significance of new U-Pb age data from the Molson dyke swarm, Cauchon Lake area, Manitoba

Canadian Journal of Earth Sciences

Volumn 37, Issue 6, 2000, Pages 957-966

  Halls, Henry C ^a   Heaman, Larry M ^b  

^a UNIVERSITY OF TORONTO   (Canada)

^b UNIVERSITY OF ALBERTA   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

DIKE; GEOCHRONOLOGY; PALEOMAGNETISM; PETROGRAPHY; PROTEROZOIC; URANIUM SERIES DATING;

CANADA;

EID: 0033849557     PISSN: 00084077     EISSN: None     Source Type: Journal    
DOI: 10.1139/e00-010     Document Type: Article

References (27)

1. Buchan, K.L., Mortensen, J.K., and Card, K.D. 1993. Northeast-trending Early Proterozoic dykes of southern Superior Province: multiple episodes of emplacement recognized from integrated paleomagnetism and U-Pb geochronology. Canadian Journal of Earth Sciences, 30: 1286-1296.
2. Buchan, K.L., Halls, H.C., and Mortensen, J.K. 1996a. Paleomagnetism and U-Pb geochronology of Marathon diabase dykes, Superior Province, and comparison with the Fort Frances swarm. Canadian Journal of Earth Sciences, 33: 1586-1595.
3. Buchan, K.L., Mertanen, S., Elming, S-A., Pesonen, L.J., Park, R.G., Leino, M.A.H., Bylund, G., and Abrahamsen, N. 1996b. The drift of Laurentia and Baltica in the Proterozoic: a comparison based on key paleomagnetic poles [abstract]. In Program and abstracts, Proterozoic Evolution in the North Atlantic Realm, IGCP 371 Conference, Goose Bay, Labrador, p. 36.
4. Buchan, K.L., Mortensen, J.K., Card, K.D., and Percival, J.A. 1998. Paleomagnetism and U-Pb geochronology of diabase dyke swarms on Minto block, Superior Province, Quebec, Canada. Canadian Journal of Earth Sciences, 35: 1054-1069.
5. Corkery, M.T. 1985. Geology of the Lower Nelson River Project area, Manitoba. Manitoba Department of Energy and Mines, Geological Report GR82-1.
6. Davis, D.W. 1982. Optimum linear regression and estimation applied to U-Pb data. Canadian Journal of Earth Sciences, 19: 2141-2149.
7. Gordon, T.M., Hunt, P.A., Bailes, A.H., and Syme, E.C. 1990. U-Pb ages from the Flin Flon and Kisseynew belts, Manitoba: chronology of crust formation at an Early Proterozoic accretionary margin. In The Early Proterozoic Trans-Hudson Orogen of North America. Edited by J.F. Lewry and M.R. Stauffer. Geological Association of Canada, Special Paper 37, pp. 177-200.
8. Halls, H.C. 1986. Paleomagnetism, structure, and longitudinal correlation of Middle Precambrian dykes from northwestern Ontario and Minnesota. Canadian Journal of Earth Sciences, 23: 142-157.
9. Halls, H.C., and Heaman, L.M. 1997. New constraints on the Paleoproterozoic segment of the Superior Province apparent polar wander path from U-Pb dating of Molson dykes, Manitoba. In Abstract volume, Geological Association of Canada Annual Meeting, Ottawa, p. A61.
10. Heaman, L.M. 1997. Global mafic magmatism at 2.45 Ga: remnants of an ancient large igneous province? Geology, 25: 299-302.
11. Heaman, L.M., and Corkery, T. 1996. U-Pb geochronology of the Split Lake Block, Manitoba: preliminary results. In Trans-Hudson Orogen Transect. Edited by Z. Hajnal and J. Lewry. Lithoprobe Report 55, pp. 60-67.
12. 2). Chemical Geology, 110: 95-126.
13. Heaman, L.M., and Machado, N. 1992. Timing and origin of midcontinent rift alkaline magmatism, North America: evidence from the Coldwell Complex. Contributions to Mineralogy and Petrology, 110: 289-303.
14. Heaman, L.M., and Parrish, R. 1991. U-Pb geochronology of accessory minerals. In Applications of radiogenic isotope systems to problems in geology. Edited by L.M. Heaman and J.L. Ludden. Mineralogical Association of Canada, Short Course Handbook 19, pp. 59-102.
15. Heaman, L.M., Machado, N., Krogh, T.E., and Weber, W. 1986. Precise U-Pb zircon ages for the Molson dyke swarm and the Fox River sill: constraints for Early Proterozoic crustal evolution in northeastern Manitoba. Contributions to Mineralogy and Petrology, 94: 82-89.
16. Irving, E., and Park, J.K. 1972. Hairpins and superintervals. Canadian Journal of Earth Sciences, 9: 1318-1324.
17. 238U. Physics Reviews, C4: 1889-1906.
18. Krogh, T.E. 1982. Improved accuracy of U-Pb ages by the creation of more concordant systems using an air abrasion technique. Geochimica et Cosmochimica Acta, 46: 637-649.
19. Machado, N. 1990. Timing of collisional events in the Trans Hudson Orogen: evidence from U-Pb geochronology for the New Quebec Orogen, the Thompson Belt and the Reindeer Zone (Manitoba and Saskatchewan). In The Early Proterozoic Trans-Hudson Orogen of North America. Edited by J.F. Lewry and M.R. Stauffer. Geological Association of Canada, Special Paper 37, pp. 433-441.
20. Orrell, S.E., Bickford, M.E., and Lewry, J.F. 1999. Crustal evolution and age of thermotectonic reworking in the western hinterland of the Trans-Hudson orogen, northern Saskatchewan. Precambrian Research, 95: 187-223.
21. Scoates, R.F.J., and Macek, J.J. 1978. Molson Dyke swarm. Manitoba Mineral Resources Division, Geological Paper 78-1.
22. Stacey, J.S., and Kramers, J.D. 1975. Approximation of terrestrial lead isotope evolution by a two-stage model. Earth and Planetary Science Letters, 67: 191-204.
23. Stauffer, M.R. 1984. Manikewan: an early Proterozoic ocean in central Canada, its igneous history and orogenic closure. Precambrian Research, 25: 257-281.
24. Symons, D.T.A., and Harris, M.J. 2000. The ∼1830 Ma Trans-Hudson Hairpin from paleomagnetism of the Wapisu gneiss dome, Kisseynew Domain, Manitoba. Canadian Journal of Earth Sciences, 37: 913-922.
25. Symons, D.T.A., Gala, M., and Palmer, H.C. 1995. Fitting paleomagnetic data to a plate tectonic model for the Trans-Hudson Orogen with a focus on the Hanson Lake Block. In Trans Hudson Orogen transect. Edited by Z. Hajnal and J.F. Lewry. Lithoprobe Report 48, pp. 66-77.
26. Weber, W. 1990. The Churchill-Superior boundary zone, southeast margin of the Trans-Hudson orogen: a review. In The Early Proterozoic Trans-Hudson Orogen of North America. Edited by J.F. Lewry and M.R. Stauffer. Geological Association of Canada, Special Paper 37, pp. 41-55.
27. Zhai, Y., Halls, H.C., and Bates, M.P. 1994. Multiple episodes of dike emplacement along the northwestern margin of the Superior Province, Manitoba. Journal of Geophysical Research, 99: 21 717-21 732.