Taconian obduction and silurian exhumation of the betts cove ophiolite, Canadian appalachians

Journal of Geology

Volumn 105, Issue 6, 1997, Pages 701-716

  Tremblay, Alain ^a   Bédard, Jean H ^a,b   Lauzière, Kathleen ^a,b  

^a CENTRE EAU TERRE ENVIRONNEMENT   (Canada)

^b GEOLOGICAL SURVEY OF CANADA   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

EXHUMATION; OBDUCTION; OPHIOLITE; SILURIAN; TACONIC OROGENY;

CANADA, NEWFOUNDLAND, APPALACHIANS;

EID: 0031421414     PISSN: 00221376     EISSN: None     Source Type: Journal    
DOI: 10.1086/515976     Document Type: Article

References (55)

1. Bédard, J. H., 1986, Pre-Acadian magmatic suites of the southeastern Gaspé Peninsula: Geol. Soc. America Bull., v. 97, p. 1177-1191.
2. _; Lauzière, K.; Sangster, A.; Boisvert, E.; Tellier, M.; Tremblay, A.; and Dec, T., 1997, Geological map of the Betts Cove ophiolitic massif and its cover rocks: Geol. Surv. Canada, Open File #3271 (revised).
3. _; _; Tremblay, A.; and Sangster, A., 1997, Evidence for forearc seafloor spreading from the Betts Cove ophiolite; oceanic crust of boninitic affinity: Tectonophysics, in press.
4. Bursnall, J. T., and DeWitt, M. J., 1975, Timing and development of the orthotectonic zone in the Appalachian orogen of northwest Newfoundland: Can. Jour. Earth Sc., v. 12, p. 1712-1722.
5. 39Ar cooling ages of Taconian deformation and metamorphism along the Laurentian margin of the Québec Appalachians, Canada: Middle Ordovician and Silurian (Abs.): Geol. Soc. America Abs. with Prog., v. 27, p. A225.
6. _; _; _; _; Pinet, N.; and Sosson, M., 1997, Ordovician and Silurian metamorphic cooling ages along the Laurentian margin of the Québec Appalachians: Bridging the gap between New England and Newfoundland: Geology, v. 25, p. 583-586.
7. Cawood, P. A., and Dunning, G. R., 1993, Silurian age for movement on the Baie Verte Line: Implications for accretionary tectonics in the Northern Appalachians (Abs.): Geol. Soc. America Abs. with Prog., v. 25, p. A422.
8. _; _; Lux, D.; and van Gool, J. A. M., 1994, Timing of peak metamorphism and deformation along the Appalachian margin of Laurentia in Newfound-land: Silurian not Ordovician: Geology, v. 22, p. 399-402.
9. _; van Gool, J. A. M.; and Dunning, G. R., 1995, Collisional tectonics along the Laurentian Margin of the Newfoundland Appalachians, in Hibbard, J. P.; van Staal, C. R.; and Cawood, P. A., eds., Current perspectives in the Appalachian-Caledonian orogen: Geol. Ass. Canada Spec. Paper 41, p. 283-301.
10. Coish, R. A.; Mickey, R.; and Frey, F. A., 1982, Rare earth element geochemistry of the Betts Cove ophiolite, Newfoundland: Complexities in ophiolite formation: Geochim. Cosmochim. Acta, v. 46, p. 2117-2134.
11. Coyle, M., 1990, Geology, geochemistry and geochronology of the Springdale Group, an early Silurian caldera in central Newfoundland: Unpub. Ph.D. dissertation, Memorial Univ., St. Johns, Newfoundland.
12. Currie, K. L., 1995, Plutonic Rocks (Chapter 8), in Williams, H., ed., Geology of the Appalachian/Caledonian Orogen in Canada and Greenland: Geol. Survey Canada Geology of Canada 6, p. 629-680 (also Geol. Soc. America, The Geology of North America, v. F-1).
13. Currie, K. L., 1995, Plutonic Rocks (Chapter 8), in Williams, H., ed., Geology of the Appalachian/Caledonian Orogen in Canada and Greenland: Geol. Survey Canada Geology of Canada 6, p. 629-680 (also Geol. Soc. America, The Geology of North America, v. F-1).
14. 39 Ar age spectra of minerals from the Fleur de Lys terrane in northwest Newfoundland: Their bearing on chronology of metamorphism within the Appalachian orthotectonic zone: Jour. Geology, v. 85, p. 89-103.
15. _, and Hibbard, J. P., 1984, Geochronology of the Baie Verte Peninsula, Newfoundland: Implications for the tectonic evolution of the Humber and Dunnage zones of the Appalachians orogen: Jour. Geology, v. 92, p. 489-512.
16. Dean, P. L., and Strong, D. F., 1975, King's Point, Newfoundland: Geol. Surv. Canada Open File Map 380.
17. DeGrace, J. R.; Kean, B. F.; Hsu, E.; and Green, T., 1976, Geology of the Nippers Harbour area (2E/13): Newfoundland Dept. Mines Energy Min. Dev. Div., Rept. 76-3, 73 p.
18. Dunning, G. R., and Krogh, T. E., 1985, Geochronology of ophiolites of the Newfoundland Appalachians: Can. Jour. Earth Sci., v. 22, p. 1659-1670.
19. _; O'Brien, S. J.; Colman-Sadd, S. P.; Blackwood, R. F.; Dickson, W. L.; O'Neill, P. P.; and Krogh, T. E., 1990, Silurian orogeny in the Newfoundland Appalachians: Jour. Geology, v. 98, p. 895-913.
20. Goodwin, L. B., and Williams, P. F., 1996, Deformation path partitioning within a transpressive shear zone, Marble Cove, Newfoundland: Jour. Struct. Geol., v. 18, p. 975-990.
21. Hanmer, S., and Passchier, C., 1991, Shear-sense indicators: A review: Geol. Survey Canada Paper 90-17, 72 p.
22. Harris, R. A., 1992, Peri-collisional extension and the formation of Oman-type ophiolites in the Banda arc and Brooks Range, in Parson, L. M.; Murton, B. J.; and Browning, P., eds., Ophiolites and their modern oceanic analogues: Geol. Soc. London Spec. Pub. 60, p. 301-325.
23. Harris, N. B. W.; Inger, S.; and Xu R., 1990, Cretaceous plutonism in Central Tibet: An example of post-collision magmatism?: Jour. Volcan. Geoth. Res., v. 44, p. 21-32.
24. Hibbard, J. P., 1982, Significance of the Baie Verte Flexure, Newfoundland: Geol. Soc. America Bull., v. 93, p. 790-797.
25. _, 1983, Geology of the Baie Verte Peninsula, Newfoundland: Newfoundland Dept. Mines Energy Min. Dev. Div. Mem. 2, 279 p.
26. _, 1994, Kinematics of Acadian deformation in the Northern and Newfoundland Appalachians: Jour. Geology, v. 102, p. 215-228.
27. _; St-Julien, P.; and Trzcienski, W. E., Jr., 1995, Humber zone internal (Chapter 3), in Williams, H., ed., Geology of the Appalachian/Caledonian Orogen in Canada and Greenland: Geol. Surv. Canada Geology of Canada 6, p. 114-139 (also Geol. Soc. America, The Geology of North America, v. F-1).
28. _; St-Julien, P.; and Trzcienski, W. E., Jr., 1995, Humber zone internal (Chapter 3), in Williams, H., ed., Geology of the Appalachian/Caledonian Orogen in Canada and Greenland: Geol. Surv. Canada Geology of Canada 6, p. 114-139 (also Geol. Soc. America, The Geology of North America, v. F-1).
29. Inger, S., 1994, Magmagenesis associated with extension in orogenic belts: Examples from the Hymalaya and Tibet: Tectonophysics, v. 238, p. 183-197.
30. Innocent, C.; Briqueu, L.; and Cabanis, B., 1994, Sr-Nd isotope and trace-element geochemistry of late Variscan volcanism in the Pyrenees: Magmatism in postorogenic extension?: Tectonophysics, v. 238, p. 161-181.
31. Jamieson, R. A., and O'Bierne-Ryan, A. M., 1991, Decompression-induced growth of albite porphyroblasts, Fleur de Lys Supergroup, western Newfoundland: Jour. Metam. Geol., v. 9, p. 433-439.
32. _; Anderson, S. D.; McDonald, L.; and Goodwin, L. B., 1993, Silurian extension along the Humber-Dunnage boundary zone, Baie Verte Peninsula, Newfoundland (Abs.), in Seranne, M., and Malavieille, J., eds., Late orogenic extension in mountains belts: Abstract Volume, BRGM 219, p. 102.
33. Mattinson, J. M., 1975, Early Paleozoic ophiolite complexes of Newfoundland: Isotopic ages of zircons: Geology, v. 3, p. 181-183.
34. Neale, E. R. W., 1975, Ambiguous intrusive relationship of the Betts Cove-Tilt Cove serpentine belt, Newfoundland: Geol. Assoc. Canada Proc., v. 9, p. 95-107.
35. _; Kean, B. F.; and Upadhyay, H. D., 1975, Postophiolite unconformity, Tilt Cove-Betts Cove area, Newfoundland: Can. Jour. Earth Sci., v. 12, p. 880-886.
36. Osberg, P. H., 1978, Synthesis of the geology of northeastern Appalachians, USA: Caledonian-Appalachian orogen of the North Atlantic region: Geol. Survey Canada Paper 78-13, p. 137-147.
37. Piasecki, M. A. J., 1995, Dunnage zone boundaries and some aspects of terrane development in Newfoundland, in Hibbard, J. P.; van Staal, C. R.; and Cawood, P. A., eds., Current perspectives in the Appalachian-Caledonian orogen: Geol. Assoc. Canada Spec. Paper 41, p. 323-347.
38. Pinet, N.; Tremblay, A.; and Sosson, M., 1996, Extension versus shortening models for hinterland-directed motions in the southern Québec Appalachians: Tectonophysics, v. 267, p. 239-256.
39. Quinlan, G. M.; Hall, J.; Williams, H.; Wright, J. A.; Colman-Sadd, S. P.; O'Brien, S. J.; Stockmal, G. S.; and Marillier, F., 1992, Lithoprobe onshore seismic reflection transects across the Newfoundland Appalachians: Can. Jour. Earth Sci., v. 29, p. 1865-1877.
40. Saunders, C. M., and Strong, D. F., 1986, Alteration-zonation related to variations in water/rock ratio at the Betts Cove ophiolitic massive sulphide deposit, Newfoundland, Canada, in Gallagher M. J.; Ixer R. A.; et al., eds., Metallogeny of basic and ultrabasic rocks: London Inst. Mining Metall. Conf. Proc. p. 161-175.
41. Squires, G. C., 1981, The distribution and genesis of the Tilt Cove sulphide deposits: Unpub. B.Sc. dissertation, Memorial Univ., St. Johns, Newfoundland.
42. Stevens, R. K., 1970, Cambro-Ordovician flysch sedimentation and tectonics in west Newfoundland and their possible bearing on a proto-Atlantic ocean, in Lajoie, J., ed., Flysch sedimentation: Geol. Assoc. Canada Spec. Paper 7, p. 165-177.
43. Strong, D. F., 1980, Granitoid rocks and associated mineral deposits of eastern Canada and western Europe: Geol. Assoc. Canada Paper 20, p. 741-769.
44. _, and Coyle, M., 1987, Evolution of Taconic to Variscan fault styles and associated Acadian magmatism in west Newfoundland, with implications for driving mechanisms (Abs.): Geol. Soc. America Abs. with Prog., v. 21, p. 69-70.
45. Tremblay, A., and Pinet, N., 1994, Distribution and characteristics of Taconian and Acadian deformation, southern Québec Appalachians: Geol. Soc. America Bull., v. 106, p. 1172-1181.
46. Upadhyay, H. D., 1973, The Betts Cove ophiolite and related rocks of the Snook Arm Group, Newfoundland: Unpub. Ph.D. Dissertation, Memorial Univ., St. Johns, Newfoundland.
47. _, and Strong, D. F., 1973, Geological setting of the Betts Cove copper deposits, Newfoundland: An example of ophiolite sulphide mineralization: Econ. Geol., v. 68, p. 161-167.
48. Waldron, J. W. F., and Stockmal, G. S., 1994, Structural and tectonic evolution of the Humber zone, western Newfoundland. 2. A regional model for Acadian thrust tectonics: Tectonics, v. 13, p. 1498-1513.
49. Williams, H., 1979, The Appalachians orogen in Canada: Can. Jour. Earth Sci., v. 16 p. 792-807.
50. _, 1995, Dunnage Zone-Newfoundland, in Williams, H., ed, Geology of the Appalachian/Caledonian Orogen in Canada and Greenland, Chapter 3: Geol. Surv. Can., Geology of Canada 6, p. 142-166 (also Geol. Soc. America, The Geology of North America, v. F-1).
51. _, 1995, Dunnage Zone-Newfoundland, in Williams, H., ed, Geology of the Appalachian/Caledonian Orogen in Canada and Greenland, Chapter 3: Geol. Surv. Can., Geology of Canada 6, p. 142-166 (also Geol. Soc. America, The Geology of North America, v. F-1).
52. _, and DeGrace, J. R., 1995, Cape St. John and nearby areas, in Williams, H., ed., Geology of the Appalachian/Caledonian Orogen in Canada and Greenland, Chapter 4: Geol. Surv. Can., Geology of Canada 6, p. 395-396 (also Geol. Soc. America, The Geology of North America, v. F-1).
53. _, and DeGrace, J. R., 1995, Cape St. John and nearby areas, in Williams, H., ed., Geology of the Appalachian/Caledonian Orogen in Canada and Greenland, Chapter 4: Geol. Surv. Can., Geology of Canada 6, p. 395-396 (also Geol. Soc. America, The Geology of North America, v. F-1).
54. _, and Hatcher, R. D., Jr, 1983, Appalachian suspect terranes: Geol. Soc. America Mem. 158, p. 33-53.
55. _, and St-Julien, P., 1982, The Baie Verte-Brompton Line-Early Paleozoic continent-ocean interface in the Canadian Appalachians, in St-Julien, P., and Béland, J., eds., Major structural zones and faults of the northern Appalachians: Geol. Assoc. Canada Spec. Paper 24, p. 177-208.