U-Pb zircon geochronology of eclogites from the Scandian Orogen, Northern Western Gneiss Region, Norway: 14-20 million years between eclogite crystallization and return to amphibolitefacies conditions

Canadian Journal of Earth Sciences

Volumn 48, Issue 2, 2011, Pages 441-472

  Krogh, Thomas E ^a   Kamo, Sandra L ^a   Robinson, Peter ^b   Terry, Michael P ^c   Kwok, Kim ^a  

^a UNIVERSITY OF TORONTO   (Canada)

^b GEOLOGICAL SURVEY OF NORWAY   (Norway)

^c SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

AMPHIBOLITE FACIES; BADDELEYITE; COESITE-ECLOGITE; CONTINENTAL COLLISIONS; DEVONIANS; ECLOGITES; GRANITIC PEGMATITE; PROTEROZOIC; TECTONIC HISTORY; U-PB ZIRCON; ULTRAHIGH PRESSURE ROCKS; WESTERN GNEISS REGION;

CRYSTALLIZATION; GARNETS; GEOCHRONOLOGY; GRANITE; LEAD; SILICATE MINERALS; TECTONICS; ZIRCON;

METAMORPHIC ROCKS;

AMPHIBOLITE FACIES; CONTINENTAL COLLISION; CRYSTALLIZATION; DEVONIAN; ECLOGITE; GEOCHRONOLOGY; GRANITOID; HIGH PRESSURE; HORNBLENDE; MELT; PALEOENVIRONMENT; PEGMATITE; PLATE TECTONICS; STRATIGRAPHY; SUBDUCTION ZONE; URANIUM-LEAD DATING; ZIRCON;

KANSAS; SCANDIA; UNITED STATES;

EID: 79952273008     PISSN: 00084077     EISSN: 14803313     Source Type: Journal    
DOI: 10.1139/E10-076     Document Type: Article

References (101)

1. Allen, K.C. 1976. Devonian spores from outer Trøndelag. Norsk Geologisk Tidsskrift, 56: 437-448.
2. Andersen, T.B., Jamtveit, B., Dewey, J.F., and Swensson, E. 1991. Subduction and eduction of continental crust: major mechanisms during continent-continent collision and orogenic extensional collapse, a model based on the south Norwegian Caledonides. Terra Nova, 3(3): 303-310. doi:10.1111/j.1365-3121.1991.tb00148.x.
3. Askvik, H., and Rokoengen, K. 1985. Geologisk kart over Norge, berggrunnskart Kristiansund. Norges geologiske undersøkelse (Geological Survey of Norway), map scale 1: 250 000.
4. Austrheim, H., Corfu, F., Bryhni, I., and Andersen, T.B. 2003. The Proterozoic Hustad igneous complex: a low strain enclave with a key to the history of the Western Gneiss Region of Norway. Precambrian Research, 120(1-2): 149-175. doi:10.1016/S0301-9268(02)00167-5.
5. Bingen, B., Austrheim, H., Whitehouse, M.J., and Davis, W.J. 2004. Trace element signature and U-Pb geochronology of eclogite- facies zircon, Bergen Arcs, Caledonides of W. Norway. Contributions to Mineralogy and Petrology, 147(6): 671-683. doi:10.1007/s00410-004-0585-z.
6. Brueckner, H.K., Carswell, D.A., Griffin, W.L., Medaris, L.G., Jr., van Roermund, H.L.M., and Cuthbert, S.J. 2010. The mantle and crustal evoliution of two garnet peridotite suites from the Western Gneiss Region, Norwegian Caledonides: an isotopic investigation. Lithos, 117(1-4): 1-19. doi:10.1016.
7. Bryhni, I., Austrheim, H., Bjørnstad, B., Kullerud, L., and Reksten, K. 1990a. Bergrunnskart Eide, Norge. Norges geologiske undersøkelse, Map 1320 IV, scale 1: 50 000, foreløpig utgave.
8. Bryhni, I., Austrheim, H., Bjørnstad, B., Kullerud, L., and Reksten, K. 1990b. Berggrunnskart Tingvoll, Norge. Norges geologiske undersøkelse, Map. 1320 I, scale 1: 50 000, foreløpig utgave.
9. Carswell, D.A. 1973. Garnet pyroxenite lens within the Ugelvik layered garnet peridotite. Earth and Planetary Science Letters, 20(3): 347-352. doi:10.1016/0012-821X(73)90009-5.
10. Carswell, D.A., and Harvey, M.A. 1985. The intrusive history and tectonometamorphic evolution of the Basal Gneiss Complex in the Moldefjord area, west Norway. In The Caledonide Orogen - Scandinavia and related areas. Edited by D.G. Gee and B.A. Sturt. Wiley, Chichester, UK., pp. 843-858.
11. Carswell, D.A., and van Roermund, H.L.M. 2005. On multi-phase mineral inclusions associated with micro-diamond formation in mantle-derived peridotite lens at Bardane, Fjørtoft, west Norway. European Journal of Mineralogy, 17(1): 31-42. doi:10.1127/0935-1221/2005/0017-0031.
12. Carswell, T., Cuthbert, S., O'Brien, P., and Tucker, R. 2001. Eclo-gite evolution and the timing of ultra-high pressure metamorphism in Western Norway. Journal of Conference Abstracts (Abstract EUG XI, 2001 Strasbourg), 6: 348.
13. Carswell, D.A., Cuthbert, S.J., Krabbendam, M., Medaris, L.G. Jr., and Brueckner, H.K. 2003a. Guidebook to the Field Excursions in the Nordfjord - Stadlandet - Almklovdalen Area. NGU Report 2002.056.
14. Carswell, D.A., Tucker, R.D., O'Brien, P.J., and Krogh, T.E. 2003b. Coesite micro-inclusions and the U-Pb age of zircons from the Hareidland eclogite in the Western Gneiss Region of Norway. Lithos, 67(3-4): 181-190. doi:10.1016/S0024-4937(03)00014-8.
15. Cherniak, D.J. 2000. Pb diffusion in rutile. Contributions to Mineralogy and Petrology, 139(2): 198-207. doi:10.1007/PL00007671.
16. Cocks, R. 2000. Lower Paleozoic geography. Geonytt, 24: 52. [Abstract.]
17. Davis, D.W. 1982. Optimum linear regression and error estimation applied to U-Pb data. Canadian Journal of Earth Sciences, 19: 2141-2149.
18. Dobrzhinetskaya, L.F., Eide, E.A., Larsen, R.B., Sturt, B.A., Trønnes, R.G., Smith, D.C., Taylor, W.R., and Posukhova, T.V. 1995. Microdiamond in high-grade metamorphic rocks of the Western Gneiss Region, Norway. Geology, 23(7): 597-600. doi:10.1130/0091-7613(1995)023<0597:MIHGMR>2.3.CO;2.
19. Eskola, P. 1921. On the eclogites of Norway. Skrifter Videnskapsselskapet i Kristiania, Kl. I, No. 8.
20. Gebauer, D., Lappin, M.A., Grunenfelder, M., and Wyttenbach, A. 1985. The age and origin of some Norwegian eclogites: a U-Pb zircon and REE study. Chemical Geology, 52: 227-247.
21. Glodny, J., Kühn, A., and Austrheim, H. 2008. Diffusion versus recrystallization processes in Rb-Sr geochronology: isotopic relics in eclogite facies rocks, Western Gneiss Region, Norway. Geochimica et Cosmochimica Acta, 72(2): 506-525. doi:10.1016/j.gca.2007.10.021.
22. Griffin, W.L., and Brueckner, H.K. 1980. Caledonian Sm-Nd ages and a crustal origin for Norwegian eclogites. Nature, 285(5763): 319-321. doi:10.1038/285319a0.
23. Hacker, B.R., Andersen, T.B., Johnston, S., Kylander-Clark, A.R.C., Peterman, E.M., Walsh, E.O., and Young, D. 2010. High-temperature deformation during continental-margin subduction & exhumation: the ultrahigh-pressure Western Gneiss Region of Norway. Tectonophysics, 480(1-4): 149-171. doi:10.1016/j.tecto.2009.08.012.
24. Handke, M.J., Tucker, R.D., and Robinson, P. 1995. Contrasting U-Pb Ages for the Risberget Augen Gneiss in the Norwegian Caledonides: Getting to the root of the problem. Geological Society of America, Abstracts with Programs, 27: A-226.
25. Hollocher, K., Robinson, P., Walsh, E., and Terry, M. 2007a. The Neoproterozoic Ottfjället dike swarm of the Middle Allochthon, traced geochemically into the Scandian hinterland, Western Gneiss Region, Norway. American Journal of Science, 307(6): 901-953. doi:10.2475/06.2007.02.
26. Hollocher, K., Robinson, P., Terry, M.P., and Walsh, E. 2007b. Application of major- and trace-element geochemistry to refine U-Pb zircon, and Sm/Nd or Lu/Hf sampling targets for geochronology of HP and UHP eclogites, Western Gneiss Region, Norway. The American Mineralogist, 92(11-12): 1919-1924. doi:10.2138/am.2007.2405.
27. Jaffey, A.H., Flynn, K.F., Glendenin, L.E., Bentley, W.C., and Essling, A.M. 1971. Precision measurement of the half-lives and specific activities of 235U and 238U. Physical Review C: Nuclear Physics, 4: 1889-1906.
28. Kaufmann, B. 2006. Calibrating the Devonian Time Scale: a synthesis of U-Pb ID-TIMS ages and conodont stratigraphy. Earth- Science Reviews, 76(3-4): 175-190. doi:10.1016/j.earscirev.2006.01.001.
29. Kooijman, E., Mezger, K., and Berndt, J. 2009. New constraints on Pb diffusion and closure temperature in rutile from in situ U-Pb dating by LA-ICP-MS. Goldschmidt Conference, Abstracts, A681.
30. Krabbendam, J.F., and Dewey, M. 1998. Exhumation of UHP rocks by transtension in the Western Gneiss Region, Scandinavian Caledonides. Geological Society (of London), Special Publication 135, Vol. 1, pp. 159-181. doi:10.1144/GSL.SP.1998.135.01.11.
31. Krill, A.G. 1980. Tectonics of the Oppdal area, central Norway. Geologiska Föreningens i Stockholm Förhandlingar, 102: 523-530.
32. Krogh, E.J. 1977. Evidence for a Precambrian continent-continent collision in western Norway. Nature, 267(5606): 17-19. doi:10.1038/267017a0.
33. Krogh, T.E. 1973. A low contamination method for hydrothermal decomposition of zircon and extraction of U and Pb for isotopic age determinations. Geochimica et Cosmochimica Acta, 37(3): 485-494. doi:10.1016/0016-7037(73)90213-5.
34. Krogh, T.E. 1982. Improved accuracy of U-Pb zircon ages by the creation of more concordant systems using an air abrasion technique. Geochimica et Cosmochimica Acta, 46(4): 637-649. doi:10.1016/0016-7037(82)90165-X.
35. Krogh, T.E. 1998. Etch selection and abrasion techniques applied to complex populations and revealed spurious ion probe ages. Mineralogical Magazine, 62A(2): 816-817. doi:10.1180/minmag.1998.62A.2.97.
36. Krogh, T.E., Mysen, B.O., and Davis, G.L. 1974. A Paleozoic age for the primary minerals of a Norwegian eclogite. Annual Report of the Geophysical Laboratory. Carnegie Institution, Washington, 73, pp. 575-576.
37. Krogh, T.E., Kwok, Y., Robinson, P., and Terry, M. 2004. U-Pb constraints on the subduction-extension interval in the Averøya- Nordøyane area, Western Gneiss Region, Norway. Goldschmidt Conference, Copenhagen, Denmark, Abstract Vol., A101.
38. Kylander-Clark, A.R.C., Hacker, B.R., Johnson, C.M., Beard, B.L., Mahlen, N.J., and Lapen, T.J. 2007. Timing of multi-stage metamorphism during ultrahigh-pressure continental subduction and exhumation: Lu/Hf and Sm/Nd geochronology in western Norway. Chemical Geology, 242: 137-154.
39. Kylander-Clark, A.R.C., Hacker, B.R., and Mattinson, J.M. 2008. Slow exhumation of UHP terranes: titanite and rutile ages of the Western Gneiss Region, Norway. Earth and Planetary Science Letters, 272(3-4): 531-540. doi:10.1016/j.epsl.2008.05.019.
40. Kylander-Clark, A.R.C., Hacker, B.R., Johnson, C.M., Beard, B.L., and Mahlen, N.J. 2009. Slow subduction and rapid exhumation of a thick ultrahigh-pressure terrane. Tectonics, 28(2): TC2003. doi:10.1029/2007TC002251.
41. Langenhorst, F., Terry, M.P., and Robinson, P. 2003. Microstructure of rutile inclusions in garnet of kyanite-garnet gneiss from Fjørtoft, Western Norway: hints concerning metamorphic evolution. In Alice Wain Memorial West Norway Eclogite Field Symposium, Selje, Norway. Abstract Vol. Norges geologiske undersøkelse, Report 2003.055, p. 77.
42. Ludwig, K.R. 2003. User's manual for Isoplot 3.00. Berkeley Geochronology Center, Berkeley, Calif., Special Publication 4.
43. Lundmark, A.M., and Corfu, F. 2008. Late-orogenic Sveconorwegian massif anorthosite in the Jotun Nappe Complex, SW Norway, and causes of repeated AMCG magmatism along the Baltoscandian margin. Contributions to Mineralogy and Petrology, 155(2): 147-163. doi:10.1007/s00410-007-0233-5.
44. Lundmark, A.M., Corfu, F., Spürgin, S., and Selbekk, R. 2007. Proterozoic evolution and provenance of the high-grade Jotun Nappe Complex, SW Norway: U-Pb geochronology. Precambrian Research, 159(3-4): 133-154. doi:10.1016/j.precamres.2006.12.015.
45. Lutro, O., Robinson, P., and Solli, A. 1997. Proterozoic geology and Scandian overprinting in the Western Gneiss Region, Norges geologiske undersøkelse, Report 97.132.
46. Milnes, A.G., Wennberg, O.P., Skår, O., and Koestler, A.G. 1997. Contraction, extension, and timing in the South Norwegian Caledonides: the Sognefjord transect. In Orogeny through time. Edited by J.P. Burr and W.E. Ford. Geological Society, of London, Special Publication 121, pp. 123-148. doi:10.1016/0009-2541(85)90125-1.
47. Mørk, M.B.E. 1985. A gabbro to eclogite transition on Flemsøy,Sunnmøre, western Norway. Chemical Geology, 50(1-3): 283-310. doi:10.1016/0009-2541(85)90125-1.
48. Mørk, M.B.E. 1986. Coronite and eclogite formation in olivine gabbro (western Norway): reaction paths and garnet zoning. Mineralogical Magazine, 50(357): 417-426. doi:10.1180/minmag.1986.050.357.06.
49. Mørk, M.B.E., and Mearns, E.W. 1986. Sm-Nd isotopic systematics of a gabbro-eclogite transition. Lithos, 19(3-4): 255-267. doi:10.1016/0024-4937(86)90026-5.
50. O'Conner, B.C., and Terry, M.P. 2002. P-T conditions and microstructural analysis of UHP metamorphic rocks during exhumation, Fjørtoft, Western Gneiss Region, Norway. Geological Society of America, Abstracts with Programs, 34: 53.
51. Robinson, P. 1995. Extension of Trollheimen tectono-stratigraphic sequence in deep synclines near Molde and Brattva°g, Western Gneiss Region, southern Norway. Norsk Geologisk Tidsskrift, 75: 181-198.
52. Robinson, P. 1997. Quartzite of Rekdalshesten, Moldefjorden, Western Gneiss Region: another parallel with Trollheimen. Norges geologiske undersøkelse, Bulletin, 433: 14-15.
53. Robinson, P., and Hollocher, K. 2008a. Day 6, Part II: Geology of Trollheimen. In Guidebook: a tectonostratigraphic transect across the central Scandinavian Caledonides. Edited by P. Robinson, D. Roberts, and D.G. Gee. Norges geologiske undersøkelse, Report 2008.064, Part II, pp. 6-1 to 6-7.
54. Robinson, P., and Hollocher, K. 2008b. Mafic dikes and basementcover relationships, southern coast of islands of Midsund. In Guidebook: a tectono-stratigraphic transect across the central Scandinavian Caledonides. Edited by P. Robinson, D. Roberts, and D.G. Gee. Norges geologiske undersøkelse, Report 2008.064, Part II, pp. 7-17 to 7-22.
55. Robinson, P., and Terry, M.P. 2009. Subduction/exhumation of UHP rocks in Silurian-Devonian continental collision, northern WGR, Norway. EOS Transactions of the American Geophysical Union, 90(52), Fall Meeting Supplement, Abstract V43D-2297.
56. Robinson, P., Langenhorst, F., and Terry, M.P. 2003a. Interpretation of inclusions in kyanite-garnet gneiss: Fjørtoft, Western Norway. In Alice Wain Memorial West Norway Eclogite Field Symposium, Selje, Norway, Abstract Vol. Norges Geologiske Undersøkelse Report 2003.055, pp. 119-120.
57. Robinson, P., Root, D., Carswell, T., and Tucker, B. 2003b. Day 1: Selje to Lepsøya or Midsund: Eclogites and related rocks of the Ulsteinvik region, In Guidebook: tectono-stratigraphic setting, structure and petrology of HP and UHP metamorphic rocks and garnet peridotites in the Western Gneiss Region, Møre og Romsdal, Norway. Edited by P. Robinson, M.P. Terry, T. Carswell, and H. van Roermund. Norges Geologiske Undersøkelse Report 2003.057, pp. 19-32.
58. Robinson, P., Terry, M.P., Carswell, T., and van Roermund, H. 2003c. Guidebook: Tectono-stratigraphic setting, structure and petrology of HP and UHP metamorphic rocks and garnet peridotites in the Western Gneiss Region, Møre og Romsdal, Norway. Norges Geologiske Undersøkelse Report 2003.057.
59. Robinson, P., Daczko, N., Krogh, T.E., and Hollocher, K. 2008a. Unusual plagioclase moat/pyroxene necklace structure around garnet in a quartz-rich layer of the Averøy eclogite, western Gneiss Region, Norway. In33rd International Geological Congress, Oslo, Norway, August 6-14. UHP-04-Ultra-high pressure metamorphism, Abstract UHP04303L.
60. Robinson, P., Roberts, D., and Gee, D.G. 2008b, Guidebook: a tectonostratigraphic transect across the central Scandinavian Caledonides. Norges Geologiske Undersøkelse Report 2008.064, Part II, 214 p.
61. Robinson, P., Terry, M.P., Krogh, T.E., Tucker, R.D., and Bingen, B. 2008c. Exhumation of UHP rocks and emplacement of Archean- Proterozoic garnet peridotites in the hinterland of the Central Norwegian Caledonides. In 33rd International Geological Congress, Oslo, Norway, August 6-14. EUR-06-Collisional orogeny in the Caledonian-Appalachian Orogen, Abstract EUR06607L.
62. Robinson, P., Vrijmoed, H., Krogh, T., and Hollocher, K. 2008d. Day 10: Geology on the Route: Lepsøy-Brattva°g-Solholmen- Atlantic Highway-Averøy-Halsa-Trondheim. In Guidebook: a tectonostratigraphic transect across the central Scandinavian Caledonides. Edited by P. Robinson, D. Roberts, and D.G. Gee. Norges Geologiske Undersøkelse Report 2008.064, Part II, pp. 10-1 to 10-8.
63. Root, D.B., Hacker, B.R., Mattinson, J.M., and Wooden, J.L. 2004. Zircon geochronology and ca. 400 Ma exhumation of Norwegian ultrahigh-pressure rocks: ion microprobe and chemical abrasion study. Earth and Planetary Science Letters, 228(3-4): 325-341. doi:10.1016/j.epsl.2004.10.019.
64. Root, D.B., Hacker, B.R., Gans, P.B., Ducea, M.N., Eide, E.A., and Mosenfelder, J.L. 2005. Discrete ultrahigh-pressure domains in the Western Gneiss Region, Norway: Implications for formation and exhumation. Journal of Metamorphic Geology, 23(1): 45-61. doi:10.1111/j.1525-1314.2005.00561.x.
65. Røhr, T.S., Corfu, F., Austrheim, H., and Andersen, T.B. 2004. Sveconorwegian U-Pb zircon and monazite ages of granulite facies rocks, Hisarøya, Gulen, Western Gneiss Region, Norway. Norwegian Journal of Geology, 84: 251-256.
66. Rû¡hr, T. S., Bingen, B., and Robinson, P. 2011. Reactivation of felsic Palaeoproterozoic basement in the Western Gneiss Region during the Sveconorwegian and Caledonian orogenies. 22nd Norwegian Winter Conference, Stavanger, Norway. Abstracts and Proceedings of the Geological Society of Norway, Vol. 1, p. 86
67. Scambelluri, M., Pettke, T., and van Roermund, H. 2008. Majoritic garnets monitor deep subduction fluid flow and mantle dynamics. Geology, 36(1): 59-62. doi:10.1130/G24056A.1.
68. Schärer, U. 1980. U-Pb and Rb-Sr dating of a polymetamorphic nappe terrain: the Caledonide Jotun Nappe, Southern Norway. Earth and Planetary Science Letters, 49(2): 205-218. doi:10.1016/0012-821X(80)90065-5.
69. Schmitz, M.D., and Bowring, S.A. 2003. Constraints on the thermal evolution of continental lithopshere from U-Pb accessory mineral thermochronometry of lower crustal xenoliths, southern Africa. Contributions to Mineralogy and Petrology, 44: 592-618.
70. Solli, A., and Robinson, P. 1997. Proterozoic basement and Scandian geology of the outer Trondheimsfjord region. Norges geologiske undersøkelse Report 97.133.
71. Spengler, D., Brueckner, H.K., van Roermund, H.L.M., Drury, M.R., and Mason, P.R.D. 2009. Long-lived, cold burial of Bal-tica to 200 km depth. Earth and Planetary Science Letters, 281: 27-35. doi:10.1016/j.epsl.2009.02.001.
72. Stacey, J.S., and Kramers, J.D. 1975. Approximation of terrestrial lead isotope evolution by a two-stage model. Earth and Planetary Science Letters, 26(2): 207-221. doi:10.1016/0012-821X(75)90088-6.
73. Terry, M.P. 2000. Structural and thermal evolution of Baltica basement and infolded cover nappes on Nordøyane and their bearing on mechanisms for production and exhumation of high-pressure rocks, Western Gneiss Region, Norway. Ph.D. thesis, University of Massachusetts, Amherst, Mass.
74. Terry, M.P. 2010. The potential for determining the PT evolution of rocks at UHP conditions using Cr in garnet- and spinel-bearing Kvalvika peridotite, Western Gneiss Region, Norway. Geological Society of America, Abstracts with Programs, 42: 49.
75. Terry, M.P., and Heidelbach, F. 2004. Super-plasticity in garnet from eclogite facies shear zones in the Haram Gabbro, Haramsøya, Norway. Geology, 32(4): 281-284. doi:10.1130/G20157.1.
76. Terry, M.P., and Heidelbach, F. 2006. Deformation-enhanced metamorphic reactions and the rheology of high-pressure shear zones, Western Gneiss Region, Norway. Journal of Metamorphic Geology, 24(1): 3-18. doi:10.1111/j.1525-1314.2005.00618.x.
77. Terry, M.P., and Robinson, P. 2003. Evolution of amphibolite-facies structural features and boundary conditions for deformation during exhumation of high- and ultrahigh-pressure rocks, Nordøyane, Western Gneiss Region, Norway. Tectonics, 22(4): 1036-1058. doi:10.1029/2001TC001349.
78. Terry, M.P., and Robinson, P. 2004. Geometry of eclogite facies structural features; implications for production and exhumation of ultrahigh- pressure and high-pressure rocks, Western Gneiss region, Norway. Tectonics, 23(2): 1-23. doi:10.1029/2002TC001401.
79. Terry, M.P., Robinson, P., Carswell, D.A., and Gasparik, T. 1999. Evidence for a Proterozoic mantle plume and a thermotectonic model for exhumation of garnet peridotites, Western Gneiss Region, Norway. EOS Transactions of the American Geophysical Union, 80(Supplement Abstract): S359-S360.
80. Terry, M.P., Robinson, P., Hamilton, M.A., and Jercinovic, M.J. 2000a. Monazite geochronology of UHP and HP metamorphism, deformation and exhumation, Nordøyane, Western Gneiss Region, Norway. American Mineralogist, 85: 1651-1664.
81. Terry, M.P., Robinson, P., and Ravna, E.J.K. 2000b. Kyanite eclogite thermobarometry and evidence for thrusting of UHP over HP metamorphic rocks, Nordøyane, Western Gneiss Region, Norway. American Mineralogist, 85: 1637-1650.
82. Terry, M.P., Bromiley, G.D., Robinson, P., and Heidelbach, F. 2003. Determination of equilibrium water content and composition of omphacitic pyroxene in a UHP kyanite-eclogite, Western Norway. Journal of Conference Abstracts, Abstract EUG XII, 2003 Nice.
83. Terry, M.P., Heidelbach, F., Couvy, H., Bromiley, G.D., and Krogh, T.E. 2005. History from the Kvalvika mantle peridotite, Norway: Implications for crust-mantle interactions, and conditions and timing for olivine c-slip during continental subduction. Geological Society of America, Abstracts with Programs, 37: 389.
84. Terry, M.P., Robinson, P., Krogh, T., and Hollocher, K. 2008. Day 9: Geology of Haramsøy, Flemsøy and Lepsøy. In Guidebook: a tectonostratigraphic transect across the central Scandinavian Caledonides. Edited by P. Robinson, D. Roberts, D.G. Gee, and P.G. Andre ́asson. Norges geologiske undersøkelse, Report 2008.064, Part II, pp. 9-1 to 9-24.
85. Torsvik, T.H. 1998. Palaeozoic palaeogeography: a North Atlantic viewpoint. GFF, 120(2): 109-118. doi:10.1080/11035899801202109.
86. Trønnes, R.G., and Sundvoll, B. 1995. Isotopic composition, deposition ages and environments of Central Norwegian marbles. Norges geologiske undersøkelse, Bulletin, 427: 44-47.
87. Tucker, R. D. 1986. Geology of the Hemnefjord-Orkanger area, south-central Norway. Norges geologiske undersøkelse Bulletin, 404: 1-24.
88. Tucker, R.D., and Krogh, T.E. 1988. Geochronological investigation on the Ingdal granite gneiss and discordant pegmatites from the Western Gneiss Region, Norway. Norsk Geologisk Tidsskrift, 68: 201-210.
89. Tucker, R.D., Raheim, A., Krogh, T.E., and Corfu, F. 1987. Uranium-lead zircon and titanite ages from the northern portion of the Western Gneiss Region, south-central Norway. Earth and Planetary Science Letters, 81(2-3): 203-211. doi:10.1016/0012-821X(87)90156-7.
90. Tucker, R.D., Krogh, T.E., Ra°heim, A. 1990. Proterozoic evolution and age-province boundaries in the central part of the Western Gneiss Region, Norway. Results of U-Pb dating of accessory minerals from Trondheimsfjord to Geiranger. In Mid- Proterozoic Laurentia-Baltica. Edited by C.F. Gower, A.B. Ryan, and T. Rivers. Geological Association of Canada, Special Paper 38, pp. 149-173. doi:10.1016/S0012-821X(98)00050-8.
91. Tucker, R.D., Bradley, D.C., Ver Straeten, C., Harris, A.G., Ebert, J., and McCutcheon, S.R. 1998. New U-Pb zircon ages and the duration and division of Devonian time. Earth and Planetary Science Letters, 158(3-4): 175-186. doi:10.1016/S0012-821X(98)00050-8.
92. Tucker, R.D., Robinson, P., Solli, A., Gee, D.G., Thorsnes, T., Krogh, T.E., Nordgulen, Ø., and Bickford, M.E. 2004. Thrusting and extension in the Scandian hinterland, Norway: New U-Pb ages and tectonostratigraphic evidence. American Journal of Science, 304(6): 477-532. doi:10.2475/ajs.304.6.477.
93. Tveten, E., Lutro, O., and Thorsnes, T. 1998. Geologisk kart over Norge, berggrunnskart A° lesund. Norges geologiske undersøkelse, map scale 1: 250 000.
94. van Roermund, H. 2008. Occurrence and interpretation of garnet peridotites in the northernmost UHPM domain of the WGR, Otrøy. In Guidebook: a tectonostratigraphic transect across the central Scandinavian Caledonides. Edited by P. Robinson, D. Roberts, D.G. Gee, and P.G. Andre ́asson. NGU Report 2008.064, Part II, pp. 7-1 to 7-17.
95. van Roermund, H. 2009. Recent progress in Scandian ultrahighpressure metamorphism in the northernmost domain of the Western Gneiss Complex, SW Norway: continental subduction down to 180-200 km depth. Journal of the Geological Society, 166(4): 739-751. doi:10.1144/0016-76492008-020.
96. van Roermund, H.L.M., and Drury, M.R. 1998. Ultra-high pressure (P > 6Gpa) garnet peridotites in Western Norway: exhumation of mantle rocks from > 185 km depth. Terra Nova, 10(6): 295-301. doi:10.1046/j.1365-3121.1998.00213.x.
97. van Roermund, H., Carswell, D.A., Drury, M.R., and Heijboer, T.C. 2002. Microdiamonds in a megacrystic garnet websterite pod from Bardane on the island of Fjørtoft, western Norway: evidence for diamond formation in mantle rocks during deep continental subduction. Geology, 30(11): 959-962. doi:10.1130/0091-7613(2002)030<0959:MIAMGW>2.0.CO;2.
98. Vrijmoed, J.C. 2009. Physical and chemical interaction in the interior of the Caledonian mountains of Norway. Ph.D. thesis, University of Oslo, Oslo, Norway.
99. Vrijmoed, J.C., Van Roermund, H.L.M., and Davies, G. 2006. Evidence for diamond-grade ultra-high pressure metamorphism and fluid interaction in the Svartberget Fe-Ti garnet peridotite-websterite body, Western Gneiss Region, Norway. Mineralogy and Petrology, 88(1-2): 381-405. doi:10.1007/s00710-006-0160-6.
100. Vrijmoed, J.C., Smith, D.C., and Van Roermund, H.L.M. 2008. Raman confirmation of microdiamond in the Svartberget Fe-Ti type garnet peridotite, Western Gneiss Region, Western Norway. Terra Nova, 20(4): 295-301. doi:10.1111/j.1365-3121.2008.00820.x.
101. Young, D.J., Hacker, B.R., Andersen, T.B., and Corfu, F. 2007. Prograde amphibolite facies to ultrahigh-pressure transition along Nordfjord, western Norway: implications for exhumation tectonics. Tectonics, 26(TC1007):. doi:10.s1029/2004TC001781.