The German bank pluton, offshore SW Nova Scotia: Age, petrology, and regional signifi cance for Alleghanian plutonism

Bulletin of the Geological Society of America

Volumn 122, Issue 5-6, 2010, Pages 690-700

  Pe Piper, Georgia ^a   Kamo, Sandra L ^b   McCall, Curtis ^a,c  

^a SAINT MARY S UNIVERSITY   (Canada)

^b UNIVERSITY OF TORONTO   (Canada)

^c HUSKY ENERGY   (Canada)

Author keywords

[No Author keywords available]

Indexed keywords

APPALACHIANS; CRUSTAL BLOCK; ELECTRON-MICROPROBE; ISOTOPIC COMPOSITION; LATE PALEOZOIC; LITHOSPHERIC MANTLE; LOWER CRUST; NOVA SCOTIA; PERMIAN; PLUTONS; THERMAL IONIZATION;

BARIUM; GALLIUM; IRON ORES; ISOTOPES; LEAD; MASS SPECTROMETERS; OCEANOGRAPHY; OXIDE MINERALS; PETROGRAPHY; PHOSPHATE MINERALS; SILICATE MINERALS;

OFFSHORE BOREHOLES;

ALLEGHANIAN; BARIUM; ELECTRON PROBE ANALYSIS; GRANITE; ISOTOPIC COMPOSITION; MAGNETITE; MASS SPECTROMETRY; MONAZITE; NEODYMIUM ISOTOPE; PETROLOGY; PLUTON; PLUTONISM; STRONTIUM; URANIUM-LEAD DATING;

APPALACHIANS; ATLANTIC OCEAN; CANADA; GERMAN BANK; NOVA SCOTIA;

EID: 77953814839     PISSN: 00167606     EISSN: 00167606     Source Type: Journal    
DOI: 10.1130/B30031.1     Document Type: Article

References (77)

1. Aleinikoff, J.N., Wintsch, R.P., Tollo, R.P., and Unruh, D.M., 2007, Age and origin of the Killingworth dome, south-central Connecticut: Implications for the tectonic evolution of southern New England: American Journal of Science, v. 307, p. 63-118, doi: 10.2475/01.2007.04.
2. 2 lava: Geological Society of America Bulletin, v. 113, p. 1324-1342, doi: 10.1130/0016-7606(2001)113 <1324:NVATFO>2.0.CO;2.
3. Clarke, D.B., Halliday, A.N., and Hamilton, P.J., 1988, Neodymium and strontium isotopic constraints on the origin of the peraluminous granitoids of the South Mountain batholith, Nova Scotia, Canada: Chemical Geology, Isotope Geoscience Section, v. 73, p. 15-24, doi: 10.1016/0168-9622(88)90018-8.
4. Clarke, D.B., MacDonald, M.A., Reynolds, P.H., and Long- staffe, F.J., 1993, Leucogranites from the eastern part of the South Mountain Batholith, Nova Scotia: Journal of Petrology, v. 34, p. 653-679.
5. Clarke, D.B., MacDonald, M.A., and Tate, M.C., 1997, Late Devonian mafi c-felsic magmatism in the Meguma Zone, Nova Scotia, in The Nature of Magmatism in the Appalachian Orogen: Geological Society of America Memoir 191, p. 107-127.
6. Coler, D.G., Samson, S.D., and Speer, J.A., 1997, Nd and Sr isotopic constraints on the source of Allegha- nian granites in the Raleigh metamorphic belt and Eastern slate belt, southern Appalachians, U.S.A: Chemical Geology, v. 134, p. 257-275, doi: 10.1016/S0009-2541(96)00063-0.
7. Cook, F.A., and Vasudevan, K., 2006, Reprocessing and enhanced interpretation of the initial COCORP South-ern Appalachians traverse: Tectonophysics, v. 420, p. 161-174, doi: 10.1016/j.tecto.2006.01.022.
8. Culshaw, N., and Liesa, M., 1997, Alleghanian reactivation of the Acadian fold belt, Meguma Zone, southwest Nova Scotia: Canadian Journal of Earth Sciences, v. 34, p. 833-847.
9. Dessureau, G., Piper, D.J.W., and Pe-Piper, G., 2000, Geochemical evolution of earliest Carboniferous continental tholeiitic basalts along a crustal-scale shear zone, southwestern Maritimes basin, eastern Canada: Lithos, v. 50, p. 27-50, doi: 10.1016/S0024-4937(99)00042-0.
10. Deniel, C., Vidal, P., Fernandez, A., Le Fort, P., and Peucat, J.-J., 1987, Isotopic study of the Manaslu granite (Hima laya, Nepal): Inferences on thes age and source of Himalayan leucogranites: Contributions to Mineralogy and Petrology, v. 96, p. 78-92, doi: 10.1007/ BF00375529.
11. De Wolf, C.P., Belshaw, N., and O'Nions, R.K., 1993, A metamorphic history from micro-scale 207Pb/206Pb chronometry of Archean monazite: Earth and Planetary Science Letters, v. 120, p. 207-220, doi: 10.1016/0012-821X(93)90240-A.
12. Eberz, G.W., Clarke, D.B., Chatterjee, A.K., and Giles, P.S., 1991, Chemical and isotopic composition of the lower crust beneath the Meguma Lithotectonic Zone, Nova Scotia: Evidence from granulite facies xenoliths: Con- tributions to Mineralogy and Petrology, v. 109, p. 69- 88, doi: 10.1007/BF00687201.
13. Fowler, M.B., and Henney, P.J., 1996, Mixed Caledonian appinite magmas: Implications for lamprophyre fractionation and high Ba-Sr granite: Contributions to Mineralogy and Petrology, v. 126, p. 199-215, doi: 10.1007/s004100050244.
14. Gerstenberger, H., and Haase, G., 1997, A highly effec- tive emitter substance for mass spectrometric Pb iso- tope ratio determinations: Chemical Geology, v. 136, p. 309-312, doi: 10.1016/S0009-2541(96)00033-2.
15. Given, M.M., 1977, Mesozoic and early Cenozoic geology of offshore Nova Scotia: Bulletin of Canadian Petro- leum Geology, v. 25, p. 63-91.
16. Ham, L., 1988, The mineralogy, petrology, and geochemistry of the Halfway Cove-Queensport pluton, Nova Scotia, Canada [M.S. thesis]: Halifax, Nova Scotia, Canada, Dalhousie University.
17. Hatcher, R.D., 2005, Southern and central Appalachians, in Selley, R.C., Cocks, R.L.M., and Plimer, I.R., eds., Encyclopedia of Geology: Oxford, UK, Elsevier, v. 4, p. 72-81.
18. Hatcher, R.D., Bream, B.R., and Merschat, A.J., 2007, Tectonic map of the southern and central Appalachians: A tale of three orogens and a complete Wilson cycle, in Hatcher, R.D., Jr., Carlson, M.P., McBride, J.H., and Martínez Catalán, J.R., eds., 4-D Framework of Continental Crust: Geological Society of America Memoir 200, p. 595-632.
19. Hibbard, J.P., and Van Staal, C.R., 2007, A comparative analysis of pre-Silurian crustal building blocks of the northern and the southern Appalachian orogen: American Journal of Science, v. 307, p. 23-45, doi: 10.2475/01.2007.02.
20. Hibbard, J.P., Stoddard, E.F., Secor, D.T., and Dennis, A.J., 2002, The Carolina Zone: Overview of Neo proterozoic to Early Paleozoic peri-Gondwanan terranes along the eastern fl ank of the southern Appalachians: Earth-Science Reviews, v. 57, no. 3-4, p. 299-339, doi: 10.1016/S0012-8252(01)00079-4.
21. Hill, J.D., 1991, Petrology, tectonic setting, and economic potential of Devonian peraluminous granitoid plutons in the Canso and Forest Hill areas, eastern Meguma terrane, Nova Scotia: Geological Survey of Canada Bulletin 383, 96 p.
22. Hutchinson, D.R., Klitgord, K.D., Lee, M.W., and Trehu, A.M., 1988, U.S. Geological Survey deep seismic reflection profi le across the Gulf of Maine: Geological Society of America Bulletin, v. 100, p. 172-184, doi: 10.1130/ 0016-7606(1988)100<0172:USGSDS>2.3.CO;2.
23. Jaffey, A.H., Flynn, K.F., Glendenin, L.E., Bentley, W.C., and Essling, A.M., 1971, Precision measurement of half-lives and specifi c activities of 235U and 238U: Physical Review, v. 4, p. 1889-1906, doi: 10.1103/PhysRevC.4.1889.
24. Jutras, P., Prichonnet, G., and McCutcheon, S., 2003, Alleghanian deformation in the eastern Gaspé Peninsula of Quebec, Canada: Geological Society of America Bulletin, v. 115, p. 1538-1551, doi: 10.1130/B25306.1.
25. Keen, C.E., Kay, W.A., Keppie, J.D., Marillier, F., Pe-Piper, G., and Waldron, J.W.F., 1991, Deep seismic refl ection data from the Bay of Fundy and Gulf of Maine: Tec- tonic implications for the northern Appalachians: Ca- nadian Journal of Earth Sciences, v. 28, p. 1096-1111, doi: 10.1139/e91-099.
26. 39Ar isotopic data: Canadian Journal of Earth Sciences, v. 32, p. 644-659.
27. Keppie, J.D., and Krogh, T.E., 1999, U-Pb geochronology of Devonian granites in the Meguma Terrane of Nova Scotia, Canada: Evidence for hotspot melting of a Neoproterozoic source: The Journal of Geology, v. 107, p. 555-568, doi: 10.1086/314369.
28. King, L.H., 1976, Cruise report no. 76-016: Dartmouth, Nova Scotia, Bedford Institute of Oceanography, Internal Report.
29. 39Ar systematics in a shear zone: Canadian Mineralogist, v. 33, p. 1237-1253.
30. Kontak, D.J., Ham, L.J., and Dunning, G., 2004, U-Pb dating of the Musquodoboit Batholith, southern Nova Scotia: Evidence for a protracted magmatic-hydrothermal event in a Devonian intrusion: Atlantic Geology, v. 40, p. 207-216.
31. 39Ar and Re-Os geochronology: Atlantic Geoscience Society 34th Colloquium, p. 32-33.
32. 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, v. 37, p. 485-494, doi: 10.1016/0016-7037(73)90213-5.
33. Loncarevic, B.D., Courtney, R.C., Fader, G.B.J., Giles, P.S., Piper, D.J.W., Costello, G., Hughes Clark, J.E., and Stea, R.R., 1994, Sonography of a glaciated continental shelf: Geology, v. 22, p. 747-750, doi: 10.1130/0091-7613(1994)022<0747:SOAGCS>2.3.CO;2.
34. Ludwig, K.R., 2003, User's manual for Isoplot 3.00: A geochronological toolkit for Microsoft Excel: Berkeley Geochronology Center, Special Publication No. 4, 71 p.
35. MacDonald, M.A., and Horne, R.J., 1988, Petrology of the zoned, peraluminous Halifax pluton, south-central Nova Scotia: Maritime Sediments and Atlantic Geology, v. 24, p. 33-46.
36. MacLean, N.J., Barr, S.M., White, C.E., and Ketchum, J.W.F., 2003, New U-Pb (zircon) age and geochemistry of the Wedgeport Pluton, Meguma terrane, Nova Sco- tia: Atlantic Geology, v. 39, p. 239-253.
37. Mattinson, J.M., 2005, Zircon U-Pb chemical abrasion (" CA-TIMS" ) method: Combined annealing and multi-step partial dissolution analysis for improved precision and accuracy of zircon ages: Chemical Geology, v. 220, p. 47-66, doi: 10.1016/j.chemgeo.2005.03.011.
38. McHone, J.G., 1992, Mafi c dike suites within Mesozoic igneous Provinces of New England and Atlantic Canada: Geological Society of America Special Publication, v. 268, p. 1-12.
39. Miller, B.V., Fetter, A.H., and Stewart, K.G., 2006, Plutonism in three orogenic pulses, eastern Blue Ridge Province, Southern Appalachians: Geological Society of America Bulletin, v. 118, p. 171 184, doi: 10.1130/B25580.1.
40. Moran, P.C., Barr, S.M., White, C.E., and Hamilton, M.A., 2007, Petrology, age, and tectonic setting of the Seal Island Pluton, offshore southwestern Nova Scotia: Canadian Journal of Earth Sciences, v. 44, p. 1467-1478, doi: 10.1139/E07-023.
41. Murphy, J.B., and Keppie, J.D., 1998, Late Devonian palin spastic reconstruction of the Avalon-Meguma terrane boundary: Implications for terrane accretion and basin development in the Appalachian orogen: Tectonophysics, v. 284, p. 221-231, doi: 10.1016/ S0040-1951(97)00177-7.
42. Murphy, J.B., Keppie, J.D., Dostal, J., and Cousens, B.L., 1996, Repeated late Neoproterozoic-Silurian lower crustal melting beneath the Antigonish Highlands, Nova Scotia: Nd isotopic evidence and tectonic in- terpretations: Geological Society of America Special Paper 304, p. 109-120.
43. Murphy, J.B., van Staal, C.R., and Keppie, J.D., 1999, Middle to late Paleozoic Acadian orogeny in the northern Appalachians: A Laramide-style plume-modified orogeny?: Geology, v. 27, p. 653-656, doi: 10.1130/ 0091-7613(1999)027<0653:MTLPAO>2.3.CO;2.
44. Nance, R.D., and Linnemann, U., 2008, The Rheic Ocean: Origin, evolution, and signifi cance: GSA Today, v. 18, no. 12, p. 4-12, doi: 10.1130/GSATG24A.1.
45. Nelson, K., 1992, Are crustal thickness variations in old mountain belts like the Appalachians a consequence of lithospheric delamination?: Geology, v. 20, p. 498-502, doi: 10.1130/0091-7613(1992)020 <0498:ACTVIO>2.3.CO;2.
46. Nickerson, G.A.J., 1998, The geology of Hell's Hole from multibeam bathymetry [B.S. theisis]: Halfax, Nova Scotia, Canada, Saint Mary's University, 55 p.
47. O'Reilly, G.A., 1988, Geology and geochemistry of the Sangster Lake and Larrys River plutons, Guysborough County, Nova Scotia [M.S. thesis]: Halifax, Nova Scotia, Canada, Dalhousie University.
48. Pearce, J.A., Harris, N.B.W., and Tindle, A.G., 1984, Trace element discrimination diagrams for the tectonic interpretation of granitic rocks: Journal of Petrology, v. 25, p. 956-983.
49. Peccerillo, A., and Taylor, S.R., 1976, Geochemistry of the Eocene calc-alkaline volcanic rocks in the Kastamonu area, northern Turkey: Contributions to Mineralogy and Petrology, v. 58, p. 63-81, doi: 10.1007/BF00384745
50. Pe-Piper, G., and Jansa, L.F., 1999, Pre-Mesozoic basement rocks offshore Nova Scotia, Canada: New constraints on the origin and Paleozoic accretionary history of the Meguma terrane: Geological Society of America Bulletin, v. 111, p. 1773-1791, doi: 10.1130/0016-7606(1999)111<1773:PMBRON>2.3.CO;2.
51. Pe-Piper, G., and Loncarevic, B.D., 1989, Offshore continuation of Meguma terrane, southwestern Nova Scotia: Canadian Journal of Earth Sciences, v. 26, p. 176-191.
52. Pe-Piper, G., and MacKay, R.M., 2006, Provenance of Lower Cretaceous sandstones onshore and offshore Nova Scotia from electron microprobe geochronology and chemical variation of detrital monazite: Bulletin of Canadian Petroleum Geology, v. 54, p. 366-379, doi: 10.2113/gscpgbull.54.4.366.
53. Pe-Piper, G., and Piper, D.J.W., 2007, Neogene back-arc volcanism of the Aegean: New insights into the rela- tionship between magmatism and tectonics: Geologi- cal Society of America, Special Paper 418, p. 17-31.
54. Pe-Piper, G., and Reynolds, P.H., 2000, Early Mesozoic alkaline dykes, southwest of Nova Scotia, Canada, and their bearing on Triassic-Jurassic magmatism: Canadian Mineralogist, v. 38, p. 217-232, doi: 10.2113/ gscanmin.38.1.217.
55. Pe-Piper, G., Piper, D.J.W., Koukouvelas, I., Dolansky, L.M., and Kokkalas, S., 2009, Miocene shoshonitic rocks of Limnos, Greece: Origin from dehydration melting of subduction-enriched metabasalt underplated at base of crust: Geological Society of America Bulletin, v. 121, p. 39-54.
56. Pitcher, W.S., 1983, Granite type and tectonic environment, in Hsu, K., ed., Mountain Building Processes: London, Academic Press, p.19-40.
57. 39Ar and fission track dating of intrusive rocks: Canadian Journal of Earth Sciences, v. 24, p. 1952-1965.
58. Reynolds, P.H., Pe-Piper, G., Piper, D.J.W., and Grist, A.M., 2009, Single-grain detrital muscovite ages from Lower Cretaceous sandstones, Scotian basin, and their implications for provenance: Bulletin of Canadian Petroleum Geology, v. 57, p. 25-42.
59. Sacks, P.E., and Secor, D.T., 1990, Delamination in col-lisional orogens: Geology, v. 18, p. 999-1002, doi: 10.1130/0091-7613(1990)018<0999:DICO>2.3.CO;2.
60. Samson, S.D., Coler, D.G., and Speer, J.A., 1995, Geochemical and Nd-Sr-Pb isotopic composition of Alleghanian granites of the southern Appalachians: Origin, tectonic setting, and source characterization: Earth and Planetary Science Letters, v. 134, p. 359-376, doi: 10.1016/0012-821X(95)00124-U.
61. Seghedi, I., Downes, H., Szakács, A., Mason, P.R.D., and Thirlwall, M.F., Rou, E., Pécskay, Z., Márton, E., and Panaiotu, C., 2004, Neogene-Quaternary magmatism and geodynamics in the Carpathian-Pannonian region: A synthesis: Lithos, v. 72, p. 117-146.
62. Spear, F.S., and Pyle, J.M., 2002, Apatite, monazite, and xeno time in metamorphic rocks: Reviews in Mineralogy and Geochemistry, v. 48, p. 293-335, doi: 10.2138/rmg.2002.48.7.
63. Tarney, J., and Jones, C.E., 1994, Trace element geochemistry of orogenic igneous rocks and crustal growth models: The Geological Society of London, v. 151, p. 855-868, doi: 10.1144/gsjgs.151.5.0855.
64. Tate, M.C., and Clarke, D.B., 1995, Petrogenesis and regional tectonic signifi cance of Late Devonian mafic intrusions in the Meguma Zone, Nova Scotia: Canadian Journal of Earth Sciences, v. 32, p. 1883-1898.
65. Tate, M.C., and Clarke, D.B., 1997, Compositional diversity among Late Devonian peraluminous granitoid intrusions in the Meguma Zone of Nova Scotia, Canada: Lithos, v. 39, p. 179-194, doi: 10.1016/S0024-4937(97)00002-9.
66. Todd, B.J., White, C.E., Dehler, S., and Hayward, S., 2005, Onshore offshore bedrock mapping, southwestern Nova Scotia, Canada: Halifax, Nova Scotia, Canada, Geological Association of Canada, Mineralogical Asso ciation of Canada Joint Annual Meeting, Abstracts, v. 30, p. 194-195.
67. Todd, B.J., Valentine, P.C., Longva, O., and Shaw, J., 2007, Glacial landforms on German Bank, Scotian Shelf: Evidence for Late Wisconsinan ice-sheet dynamics and implications for the formation of De Geer moraines: Boreas, v. 36, p. 148-169, doi: 10.1080/03009480600992050.
68. Tomascak, P.B., Krogstad, E.J., and Walker, R.J., 1996a, U-Pb monazite geochronology of granitic rocks from Maine: Implications for late Paleozoic tectonics in the northern Appalachians: The Journal of Geology, v. 104, p. 185-195.
69. Tomascak, P.B., Krogstad, E.J., and Walker, R.J., 1996b, Nature of the crust in Maine, USA: Evidence from the Sebago batholith: Contributions to Mineralogy and Petrol ogy, v. 125, p. 45-59, doi: 10.1007/s004100050205.
70. Tomascak, P.B., Krogstad, E.J., and Walker, R.J., 1998, Sm-Nd isotope systematics and the derivation of granitic pegmatites in southwestern Maine: Canadian Mineralogist, v. 36, p. 327-337.
71. Tucker, R.D., Osberg, P.H., and Berry, H.N., 2001, The geology of a part of Acadia and the nature of the Acadian orogeny across central and eastern Maine: American Journal of Science, v. 301, p. 205-260, doi: 10.2475/ ajs.301.3.205.
72. Turner, S., Arnaud, N., Liu, J., Rogers, N., Hawkesworth, C., Harris, N., Kelley, S., van Calsteren, P., and Deng, W., 1996, Post-collision, shoshonitic volcanism on the Tibetan Plateau: Implications for convective thinning of the lithosphere and the source of ocean island basalts: Journal of Petrology, v. 37, p. 45-71, doi: 10.1093/petrology/37.1.45.
73. van Staal, C.R., 2009, Tectonic evolution of the Canadian Appalachians, in Percival, J., and Cook, F., Variations in Tectonic Styles Revisited in Light of Lithoprobe Results: Geological Association of Canada Special Paper (in press).
74. Walsh, G.J., Aleinikoff, J.N., and Wintsch, R.P., 2007, Origin of the Lyme dome and implications for the timing of multiple Alleghanian deformation and intrusive events in southern Connecticut: American Journal of Science, v. 307, p. 168-215, doi: 10.2475/06.2007.06.
75. Wedepohl, K.H., 1994, The composition of the continental crust: Mineralogical Magazine, v. 58A, p. 959-960, doi: 10.1180/minmag.1994.58A.2.234.
76. Wortel, M.J.R., and Spakman, W., 2000, Subduction and slab detachment in the Mediterranean-Carpathian region: Science, v. 290, p. 1910-1917, doi: 10.1126/ science.290.5498.1910.
77. Zhu, X.K., and O'Nions, R.K., 1999, Zonation of monazite in metamorphic rocks and its implications for high- temperature thermochronology: A case study from Lewisian terrain: Earth and Planetary Science Letters, v. 171, p. 209-220, doi: 10.1016/S0012-821X(99)00146-6.