The Mackenzie River magnetic anomaly, Yukon and Northwest Territories, Canada-Evidence for Early Proterozoic magmatic arc crust at the edge of the North American craton

Tectonophysics

Volumn 478, Issue 1-2, 2009, Pages 78-86

  Pilkington, Mark ^a   Saltus, Rick W ^b  

^a GEOLOGICAL SURVEY OF CANADA   (Canada)

^b DENVER FEDERAL CENTER   (United States)

Author keywords

Crustal strength; Magmatic arc; Magnetic anomaly

Indexed keywords

AEROMAGNETIC DATA; CRUSTAL STRENGTH; DEEP LAYER; EULER DECONVOLUTION; FOLD-AND-THRUST BELTS; GEOMETRIC CHANGES; HIGH ALTITUDE; LONG WAVELENGTH; LOW-ALTITUDE; MAGMATIC ARC; MAGMATIC ARCS; MAGNETIC ANOMALIES; MAGNETIC ANOMALY; MAGNETIC FIELD DATA; NORTH AMERICAN; PROTEROZOIC; REFLECTION SEISMIC; SIMPSON; TECTONIC EVOLUTION;

CAVITY RESONATORS; MAGNETIC FIELDS; SEISMOLOGY; TECTONICS;

MAGNETIC MATERIALS;

AEROMAGNETIC SURVEY; CRATON; CRUSTAL STRUCTURE; FOLD AND THRUST BELT; MAGNETIC ANOMALY; MAGNETIC FIELD; MAGNETIZATION; PROTEROZOIC; SEISMIC DATA; SEISMIC REFLECTION; TECTONIC EVOLUTION;

CANADA; MACKENZIE RIVER [NORTHWEST TERRITORIES]; NORTH AMERICA; NORTHWEST TERRITORIES; YUKON TERRITORY;

EID: 70449521458     PISSN: 00401951     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tecto.2008.09.006     Document Type: Article

References (40)

1. Aspler L.B., Pilkington M., and Miles W.F. Interpretations of Precambrian basement based on recent aeromagnetic data, Mackenzie Valley NWT. Current Research 2003-C2, Geological Survey of Canada (2003) 11 pp.
2. 86Sr for granitoids of the Central Sierra Nevada, California. Journal of Geophysical Research 96 (1991) 19555-19568
3. Blakely R.J. Potential Theory in Gravity & Magnetic Applications (1995), Cambridge University Press 441 pp.
4. Clark D.A. Magnetic petrophysics and magnetic petrology: aids to geological interpretation of magnetic surveys. Australian Geological Survey Organisation Journal of Geology and Geophysics 17 (1997) 83-104
5. Clark E.A., and Cook F.A. Crustal-scale ramp in a Middle Proterozoic orogen, Northwest Territories, Canada. Canadian Journal of Earth Sciences 29 (1992) 142-157
6. Coles R.L. Magsat scalar magnetic anomalies at northern high latitudes. Journal of Geophysical Research 90 (1985) 2576-2582
7. Coles R.L., Haines G.V., and Hannaford W. Large-scale magnetic anomalies over western Canada and the Arctic: a discussion. Canadian Journal of Earth Sciences (1976) 790-802
8. Cook F.A. Middle Proterozoic compressional orogen in northwestern Canada. Journal of Geophysical Research 93 (1988) 8985-9005
9. Cook D.G., and MacLean B.C. The intracratonic Paleoproterozoic forward orogeny, and implications for regional correlations, Northwest Territories, Canada. Canadian Journal of Earth Sciences 32 (1995) 1991-2008
10. Cook F.A., Varsek J.L., and Clark E.A. Proterozoic craton to basin crustal transition in western Canada and its influence on the evolution of the Cordillera. Canadian Journal of Earth Sciences 28 (1991) 1148-1158
11. Cook F.A., Dredge M., and Clark E.A. The Proterozoic Fort Simpson structural trend in northwestern Canada. Geological Society of America Bulletin 104 (1992) 1121-1137
12. Cook F.A., Clowes R.M., Snyder D.B., van der Velden A.J., Hall K.W., Erdmer P., and Evenchick C.A. Precambrian crust beneath the Mesozoic northern Canadian Cordillera discovered by Lithoprobe seismic reflection profiling. Tectonics 23 (2004) TC2010 10.1029/2002TC001412
13. Cook F.A., Hall K.W., and Lynn C.E. The edge of northwestern North America at ∼ 1.8 Ga. Canadian Journal of Earth Sciences 42 (2005) 983-997
14. Creaser B., and Spence G. Crustal structure across the northern Cordillera, Yukon Territory, from seismic wide-angle studies: Omenica Belt to Intermontane Belt. Canadian Journal of Earth Sciences 42 (2005) 1187-1203
15. Finn C.A. Aeromagnetic evidence for a buried Early Cretaceous magmatic arc, northeast Japan. Journal of Geophysical Research 99 (1994) 22165-22185
16. e of the lithosphere in Western Canada. Journal of Geophysical Research 108 B9 (2003) 2430 10.1029/2002JB002201
17. Hahn A., and Roeser H.A. The magnetization of the lower crust. In: Mereu R.F., Mueller S., and Fountain D.M. (Eds). Properties and Processes of Earth's Lower Crust. Geophysical Monograph Series vol. 51 (1989), American Geophysical Union, Washington, D.C. 247-253
18. Haines G.V., and Hannaford W. A three-component aeromagnetic survey of Saskatchewan, Alberta, Yukon and the District of Mackenzie. Earth Physics Branch Geomagnetic Series, No. 8 (1976) 28 pp.
19. Hoffman P.F. Precambrian geology and tectonic history of North America. In: Bally A.W., and Palmer A.R. (Eds). The geology of North America-An Overview. The Geology of North America vol. A (1989), Geological Society of America, Boulder, Colorado 447-512
20. Johnson A.C. Interpretation of new aeromagnetic anomaly data from the central Antarctic Peninsula. Journal of Geophysical Research 104 (1999) 5031-5046
21. Kuler C.S., Potter C.J., Grow J.A., and Saltus R.W. Interpreted regional seismic reflection lines, National Petroleum Reserve, Alaska. American Association of Petroleum Geologists Bulletin 86 (2002) 1149
22. Lowe C., Horner R.B., Mortensen J.K., Johnston S.T., and Roots C.F. New geophysical data from the northern Cordillera: preliminary interpretations and implications for the tectonics and deep geology. Canadian Journal of Earth Sciences 31 (1994) 891-904
23. Maclean B.C., and Miles W.F. Potential field modeling of a Proterozoic graben near Blackwater Lake area, Northwest Territories, Canada, and its implications for the Fort Simpson anomaly. Canadian Journal of Earth Sciences 39 (2002) 169-187
24. Maus S., Rother M., Holme R., Lühr H., Olsen N., and Haak V. First scalar magnetic anomaly map from CHAMP satellite data indicates weak lithospheric field. Geophysical Research Letters 29 (2002) no. 14, 10.1029/2001GL013685
25. Mitchelmore M.D., and Cook F.A. Inversion of the Proterozoic Wernecke basin during tectonic development of the Racklan Orogen, northwest Canada. Canadian Journal of Earth Sciences 31 (1994) 447-457
26. Norris D., and Yorath C. The North American Plate from the Arctic Archipelago to the Romanzoff Mountains. In: Nairn A., Churkin M., and Stehli F. (Eds). The Ocean Basins and Margins. The Arctic Ocean vol. 5 (1981), Plenum, New York 37-97
27. O'Leary D.M., Ellis R.M., Stephenson R.A., Lane L.S., and Zelt C.A. Crustal structure of the northern Yukon and Mackenzie Delta, northwestern Canada. Journal of Geophysical Research 100 (1995) 9905-9920
28. Pilkington M., and Percival J.A. Crustal magnetization and long wavelength aeromagnetic anomalies of the Minto block, Quebec. Journal of Geophysical Research 104 (1999) 7513-7526
29. Pilkington M., Snyder D.B., and Hemant K. Weakly magnetic crust in the Canadian Cordillera. Earth and Planetary Science Letters 248 (2006) 461-470
30. Reid A.B., Allsop J.M., Granser H., Millett A.J., and Somerton I.W. Magnetic interpretation in three dimensions using Euler deconvolution. Geophysics 55 (1990) 80-91
31. Ross G.M. Precambrian basement in the Canadian Cordillera: an introduction. Canadian Journal of Earth Sciences 28 (1991) 1133-1139
32. Ross G.M., Parrish R.R., Villeneuve M.E., and Bowring S.A. Geophysics and geochronology of the crystalline basement of the Alberta Basin, western Canada. Canadian Journal of Earth Sciences. 28 (1991) 512-522
33. Ross G.M., Annell H.C., and Hamilton M.A. Lithology and U-Pb geochronology of shallow basement along the SNORCLE line, southwest Northwest Territories: a preliminary report. In: Cook F.A., and Erdmer P. (Eds). Slave-Northern Cordillera Lithospheric Evolution (SNORCLE) Transect and Cordilleran Tectonics Workshop Meeting. Lithoprobe Report vol. 72 (2000) 76-80
34. Saltus R.W., and Hudson T.L. Regional magnetic anomalies, crustal strength, and the location of the northern Cordilleran fold-and-thrust belt. Geology 35 (2007) 567-570
35. Saltus R.W., Potter C.J., and Phillips J.D. Crustal insights from gravity and aeromagnetic analysis-Central North Slope, Alaska. American Association of Petroleum Geologists Bulletin 90 (2006) 1495-1517
36. Shive P.N., Blakely R.J., Frost B.R., and Fountain D.M. Magnetic properties of the lower continental crust. In: Fountain D.M., Arculus R., and Kay R.W. (Eds). Continental Lower Crust (1992), Elsevier, New York 145-177
37. Taylor P., Kim H.R., Kutina J., and Johnson G.L. Geohazard assessment from satellite magnetic data modeling. Earth, Planets and Space 60 (2008) 497-503
38. Villeneuve M.E., Theriault R.J., and Ross G.M. U-Pb ages and Sm-Nd signatures of two subsurface granites from the Fort Simpson magnetic high, northwest Canada. Canadian Journal of Earth Sciences 28 (1991) 1003-1008
39. Wasilewski P.J., and Mayhew M.A. The Moho as a magnetic boundary revisited. Geophysical Research Letters 19 (1992) 2259-2262
40. Wasilewski P.J., Thomas H.H., and Mayhew M.A. The Moho as a magnetic boundary. Geophysical Research Letters 6 (1979) 541-544