Time span of plutonism, fabric development, and cooling in a Neoproterozoic magmatic arc segment: U-Pb age constraints from syn-tectonic plutons, Sark, Channel Islands, UK

Tectonophysics

Volumn 312, Issue 1, 1999, Pages 79-95

  Miller, Brent V ^a   Samson, Scott D ^a   D'Lemos, Richard S ^b  

^a SYRACUSE UNIVERSITY   (United States)

^b OXFORD BROOKES UNIVERSITY   (United Kingdom)

Author keywords

Cadomian orogeny; English Channel Islands; Magmatic arc; Syn tectonic plutonism; Titanite; U Pb; Zircon

Indexed keywords

COOLING; ISLAND ARC; PLUTONISM; TEXTURE;

UNITED KINGDOM;

EID: 0033386794     PISSN: 00401951     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-1951(99)00172-9     Document Type: Article

References (54)

1. Auvray B., Charlot R., Vidal P. Donées nouvelles sur le Protérozoique inférieur du domaine nord-Amoricain (France): âge et signification. Can. J Earth Sci. 17:1980;532-538.
2. Boullier A.M., Bouchez J.L. Le quartz en rubans dans les mylonites. Bull. Soc. Géol. Fr. 7:1978;253-262.
3. Brewer T.S., Power G.M. The geochemistry of the foliated granitic rocks of Alderney, Channel Islands. Proc. Ussher Soc. 6:1986;405-411.
4. Brown M., D'Lemos R.S. The Cadomian granites of Mancellia, north-east Armorican Massif of France: Relationship to the St Malo migmatite belt, petrogenesis and tectonic setting. Precambrian Res. 51:1991;393-427.
5. Brown, M., Power, G.M., Topley, C.G., D'Lemos, R.S., 1990. Cadomian magmatism in the North Armorican Massif. In: D'Lemos, R.S., Strachan, R.A., Topley, C.G. (Eds.), The Cadomian Orogeny. Geological Society of London, London, pp. 181-213.
6. Calvez J.Y., Vidal P.H. Two billion year old relicts in the Hercynian belt of western Europe. Contrib. Mineral. Petrol. 65:1978;395-399.
7. Corfu F. Multistage zircon and titanite growth and inheritance in an Archean gneiss complex, Winnipeg River Subprovince, Ontario. Earth Planet. Sci. Lett. 141:1996;175-186.
8. Dallmeyer R.D., D'Lemos R.S., Strachan R.A., Mueller P.A. Tectonothermal chronology of early Cadomian arc development in Guernsey and Sark, Channel Islands. J. Geol. Soc. London. 148:1991;691-702.
9. 39Ar mineral ages. Can. J. Earth Sci. 28:1991;762-773.
10. 39Ar mineral ages. J. Geol. Soc. London. 149:1992;139-147.
11. 39Ar mineral ages. Geol. J. 29:1994;29-44.
12. Denis E., Dabard M.P. Sandstone petrography and geochemistry of late Proterozoic sediments of the Armorican Massif (France) - a key to basin development during The Cadomian orogeny. Precambrian Res. 42:1988;189-206.
13. D'Lemos R.S., Brown M. Sm-Nd isotopic characteristics of Late Cadomian granite magmatism in northern France and the Channel Islands. Geol. Mag. 130:1993;797-804.
14. D'Lemos, R.S., Strachan, R.A., Topley, C.G., 1990. The Cadomian orogeny in the North Armorican massif: a brief review. In: D'Lemos, R.S., Strachan, R.A., Topley, C.G. (Eds.), The Cadomian Orogeny. Geological Society of London, London, pp. 3-12.
15. Dupret, L., Dissler, E., Doré, F., Gresselin, F., Le Gall, J., 1990. Cadomian geodynamic evolution of the northeastern Armorican Massif (Normandy and Maine). In: D'Lemos, R.S., Strachan, R.A., Topley, C.G. (Eds.), The Cadomian Orogeny. Geological Society of London, London, pp. 115-131.
16. Friedrich A.M., Bowring S.M., Martin M.W., Hodges K.V. Short-lived continental magmatic arc at Connemara, western Irish Caledonides: implications for the age of the Grampian orogeny. Geology. 27:1999;27-30.
17. Gibbons W., Power G.M. The structure and age of the gneisses of Sark, Channel Isles. Proc. Ussher Soc. 3:1975;244-251.
18. Guerrot, C., Peucat, J.J., 1990. U-Pb geochronology of the Late Proterozoic Cadomian orogeny in the northern Armorican Massif. In: D'Lemos, R.S., Strachan, R.A., Topley, C.G. (Eds.), The Cadomian Orogeny. Geological Society of London, London, pp. 13-26.
19. 40Ar in hornblende. Contrib. Mineral. Petrol. 78:1981;324-331.
20. Ketchum J.W.F., Culshaw N.G., Dunning G.R. U-Pb geochronologic constraints on Paleoproterozoic orogenesis in the northwestern Makkovik Province, Labrador, Canada. Can. J. Earth Sci. 34:1997;1072-1088.
21. Krogh T.E. Improved accuracy of U-Pb zircon ages by the creation of more concordant systems using an air abrasion technique. Geochim. Cosmochim. Acta. 46:1982;637-649.
22. Krogh T.E. Precise U-Pb ages for Grenvillian and pre-Grenvillian thrusting of Proterozoic and Archean metamorphic assemblages in the Grenville Front Tectonic Zone, Canada. Tectonics. 13:1994;963-982.
23. Ludwig, K.R., 1989. Pb-Dat: a computer program for processing raw Pb-U-Th isotope data. U.S. Geol. Surv. Open-File Rep. 88-557.
24. Ludwig, K.R., 1990. Isoplot: a plotting and regression program for radiogenic isotopic data. U.S. Geol. Surv. Open-File Rep. 90-91.
25. Ludwig K.R. On the treatment of concordant uranium-lead ages. Geochim. Cosmochim. Acta. 62:1998;665-676.
26. Mezger K., Rawnsley C.M., Bohlen S.R., Hanson G.N. U-Pb garnet, sphene, monazite, and rutile ages: implications for the duration of high-grade metamorphism and cooling histories, Adirondack Mountains, New York. J. Geol. 99:1991;415-428.
27. Paterson S.R., Tobisch O.T. Using pluton ages to date regional deformations: problems with commonly used criteria. Geology. 16:1988;1108-1111.
28. Paterson S.R., Vernon R.H., Tobisch O.T. A review of criteria for the identification of magmatic and tectonic foliations in granitoids. J. Struct. Geol. 11(3):1989;349-363.
29. Paterson S.R., Tobisch O.T. Rates of processes in magmatic arcs: implications for the timing and nature of pluton emplacement and wall rock deformation. J. Struct. Geol. 14:1992;291-300.
30. Petford N., Atherton M.P. Granitoid emplacement and deformation along a major crustal lineament: the Cordillera Blanca, Peru. Tectonophysics. 205:1992;171-185.
31. Pidgeon R.T., Bosch D., Bruguier O. Inherited zircon and titanite U-Pb systematics in an Archean syenite from southwestern Australia: implications for U-Pb stability of titanite. Earth Planet. Sci. Lett. 144:1996;187-198.
32. Power G.M., Gibbons W. Field relations and geochemistry of the foliated granitic sheets of Sark, Channel Islands. Proc. Ussher Soc. 5:1980;59-67.
33. Power, G.M., Brewer, T.S., Brown, M., Gibbons, W., 1990. Late Precambrian foliated plutonic complexes of the Channel Islands and La Hague - Early Cadomian plutonism. In: D'Lemos, R.S., Strachan, R.A., Topley, C.G. (Eds.), The Cadomian Orogeny. Geological Society of London, London, pp. 215-229.
34. Roach, R.A., Lees, G.J., Shufflebotham, M.M., 1990. Brioverian volcanism and Cadomian tectonics, Baie de St Brieuc, Brittany: stages in the evolution of a late Precambrian ensialic basin. In: D'Lemos, R.S., Strachan, R.A., Topley, C.G. (Eds.), The Cadomian Orogeny. Geological Society of London, London, pp. 41-68.
35. Rushmer T. Partial melting of two amphibolites: Contrasting results under fluid-absent conditions. Contrib. Mineral. Petrol. 107:1991;41-49.
36. Rushmer T. An experimental deformation study of partially molten amphibolite: application to low-melt fraction segregation. J. Geophys. Res. 100:1995;15681-15695.
37. 39Ar (biotite-hornblende) from rocks of the central Foothills terrane, Sierra Nevada, California. Geol. Soc. Am. Bull. 101:1989;1481-1492.
38. Samson, S.D., 1998. Identical titanite and zircon U-Pb dates from Alleghanian granites: further evidence for the robustness of the U-Pb titanite 'clock'. Geological Society of America Annual Meeting, Toronto, Ontario, Canada.
39. Samson S.D., D'Lemos R.S. U-Pb geochronology and Sm-Nd composition of Proterozoic gneisses, Channel Islands, U.K. J. Geol. Soc. London. 155:1998;609-618.
40. Samson S.D., D'Lemos R.S. A precise late Neoproterozoic U-Pb zircon age for the syntectonic Perelle quartz diorite, Guernsey, Channel Islands, U.K. J. Geol. Soc. London. 156:1999;47-54.
41. Schofield D.I., D'Lemos R.S. Relationships between syn-tectonic granite fabrics and regional PTtd paths: an example from the Gander-Avalon boundary of NE Newfoundland. J. Struct. Geol. 20:1998;459-471.
42. Scott D.J., St-Onge M.R. Constraints on Pb closure temperature in titanite based on rocks from the Ungava orogen, Canada: implications for U-Pb geochronology and P-T-t path determinations. Geology. 23:1995;1123-1126.
43. Simpson C.A. Deformation of granitic rocks across the brittle-ductile transition. J. Struct. Geol. 7:1985;503-511.
44. Strachan, R.A., Roach, R.A., 1990. Tectonic evolution of the Cadomian belt in North Brittany. In: D'Lemos, R.S., Strachan, R.A., Topley, C.G. (Eds.), The Cadomian Orogeny. Geological Society of London, London, pp. 133-150.
45. Strachan R.A., Treloar P.J., Brown M., D'Lemos R.S. Short paper: Cadomian terrane tectonics and magmatism in the Armorican Massif. J. Geol. Soc. London. 146:1989;423-426.
46. Strachan, R.A., D'Lemos, R.S., Dallmeyer, R.D., 1996. Neoproterozoic evolution of an active plate margin. North Armorican Massif, France. In: Nance, R.D., Thompson, M.D. (Eds.), Avalonian and Related Peri-Gondwanan Terranes of the Circum-Atlantic. Geological Society of America, Boulder, CO, pp. 319-332.
47. Tobisch O.T., Saleeby J.B., Renne P.R., McNulty B., Tong W. Variations in deformation fields during development of a large-volume magmatic arc, central Sierra Nevada, California. Geol. Soc. Am. Bull. 107:1995;148-166.
48. Tribe, I.R., 1994. Deformation of Granitoid Rocks, Channel Islands, UK: Implications for the Structural Evolution of a Late Precambrian Arc. Ph.D. thesis, Oxford Brookes University, Oxford.
49. Tribe I.R., D'Lemos R.S. Significance of a hiatus in down-temperature fabric development within syn-tectonic quartz diorite complexes, Channel Islands, UK. J. Geol. Soc. London. 153:1996;127-138.
50. Tribe I.R., Strachan R.A., D'Lemos R.A. Neoproterozoic shear zone tectonics within the Icartian basement of Guernsey and Sark, Channel Islands. Geol. Mag. 133:1996;177-192.
51. Watson E.B., Cherniak D.J., Hanchar J.M., Harrison T.M., Wark D.A. The incorporation of Pb into zircon. Chem. Geol. 141:1997;19-31.
52. Went, D., Andrews, M., 1990. Post-Cadomian erosion, deposition and basin development in the Channel Islands and northern Brittany. In: D'Lemos, R.S., Strachan, R.A., Topley, C.G. (Eds.), The Cadomian Orogeny. Geological Society of London, London, pp. 293-304.
53. Wyllie P.J. Crustal anatexis: an experimental review. Tectonophysics. 43:1977;41-47.
54. Zhang L.-S., Schärer U. Inherited Pb components in magmatic titanite and their consequence for the interpretation of U-Pb ages. Earth Planet. Sci. Lett. 138:1996;57-65.