Multiple migmatization in the HT/LP Central Damara Orogen, Namibia

Neues Jahrbuch fur Mineralogie, Abhandlungen

Volumn 170, Issue 3, 1996, Pages 257-289

  Masberg, Peter ^a  

^a PHILIPPS UNIVERSITY MARBURG   (Germany)

Author keywords

Anatectic leucosomes; Damara Orogen; Microfabrics; Migmatite; Partial melting; S type granites; Subsolidus leucosomes

Indexed keywords

EID: 0030493634     PISSN: 00777757     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (86)

1. ASHWORTH, J. R. (1985): Indroduction. - In: ASHWORTH, J. R. (ed): Migmatites. - J. R. Blackie & son, Glasgowv, pp. 1-36.
2. ASPREY, L. B. (1976): The preparation of very pure fluorine gas. - J. Fluorine Chem. 7: 359-361.
3. BARNES, S. J. & SAWYER, E. W. (1980): An alternative model for the Damara Mobile Belt: Ocean crust subduction and continental convergence. - Precambrian Res. 13: 297-336.
4. BEA, F., FERSHATER, G. & CORRETGÉ, L. G. (1992): The geochemistry of phosphorus in granite rocks and the effect of aluminium. - Lithos 29: 43-56.
5. BEACH, A. (1980): Numerical models of hydraulic fracturing and the interpretation of syntectonic veins. - J. Struct. Geol, 2: 425-438.
6. 2-rich fluids. - J. Geol. 97: 697-717.
7. CHAPMAN, C. A. (1950): Quartz veins formed by metamorphic different ation of aluminous schists. - Amer. Miner. 35: 693-710.
8. CHAPPELL, B. W. & WHITE, A. J. R. (1974): Two contrasting granite types. - Pacific Geol. 7: 173-174.
9. CHEN, G., JOHANNES, W. & SCHLIESTEDT, M. (1991): The origin of flecked gneiss in Liuguz-Huang area, Qianan block, East Hebei, China. - Terra abstracts 3: 443.
10. CLAYTON, R. N. & MAYEDA, T. D. (1963): The use of bromine pentafluoride in the extraction of oxygen from oxides and silicates for isotopic analysis. - Geochim. Cosmochim. Acta 27: 43-52.
11. CONRAD, W. K., NICHOLLS, I. A. & WALL, V. J. (1988): Water-saturated and -undersaturated melting of metaluminous and peraluminous crustal compositions at 10kb: evidence for the origin of silicic magmas in the Taupo Volcanic Zone, New Zealand, and other occurrences. - J. Petrol. 29: 765-803.
12. COWARD, M. P. (1983): A tectonic history of the Damaran belt. - In: MILLER, R. McG. (ed.): Evolution of the Damara Orogen. - Spec. Publ. geol. Soc. S. Afr. 11: 409-421.
13. DUBRAY, E. (1994): Composition of micas in peraluminous granitoids of the eastern Arabian Shield. Implications for petrogenesis and tectonic setting of highly evolved, rare-metal enriched granites. - Contrib. Miner. Petrol. 116: 381-397.
14. FRIMMEL, H. E. & VAN ACHTERBERGH, E. (1994): Metamorphism of calc-silicate and associated rocks in the Pan-African Kaaimans Group, Saldania belt, South Africa. -Miner. Petrol. 53: 75-102.
15. GREEN, T. H. (1976): Experimental generation of cordierite-or garnet-bearing granitic liquids from a pelitic composition. - Geology 4: 85-88.
16. HAACK, U. (1976): Rekonstruktion der Abkühlungsgeschichte des Damara-Orogens in Südwest-Afrika mit Hilfe von Spaltspuren-Altern. - Geol. Rdsch. 65: 967-1002.
17. 18O data. - Contrib. Miner. Petrol. 79: 279-289.
18. 18O data. - In: MARTIN, H. & EDER, F. W. (eds): Intracontinental fold belts. - Springer Berlin, Heidelberg, New York, Tokyo, pp. 847-872.
19. HARRIS, N. B. W. (1974): Some migmatite types and their origins, from the Barousse Massif, Central Pyrenees. - Geol. Mag. 111: 319-328.
20. HARRIS, N. B. W. & INGER, S. (1992): Trace element modelling of pelite derived granites. - Contrib. Miner. Petrol. 110: 46-56.
21. HARRISON, T. M. & WATSON, E. B. (1984): The behaviour of apatite during crustal anatexis: equilibrium and kinetic considerations. - Geochim. Cosmochim. Acta 48: 1467-1477.
22. HARTMANN, O., HOFFER, E. & HAACK, U. (1983): Regional metamorphism in the Damara Orogen: interaction of crustal motion and heat transfer. - In: MILLER, R. McG. (ed.): Evolution of the Damara Orogen. - Spec. Publ. geol. Soc. S. Afr. 11: 233-241.
23. HAWKESWORTH, C. J., MENZIES, M. A. & VAN CALSTEREN, P. (1986): Geochemical and tectonic evolution of the Damara Belt, Namibia. - In: COWARD, M. P. & RIES, A. C. (eds): Collision Tectonics. - Geol. Soc. Spec. Pub. 19: 305-319.
24. HEINRICHS, H. & HERRMANN, A. B. (1990): Praktikum der analytischen Geochemie. -Springer, Berlin, Heidelberg, New York, 669 pp.
25. HOERNES, S. & HOFFER, E. (1979): Equilibrium relations of prograde metamorphic mineral assemblages. A stable isotope study of rocks of the Damara Orogen, from Namibia. - Contrib. Miner. Petrol. 68: 377-389.
26. -(1985): Stable isotope evidence for fluid-present and fluid absent metamorphism in metapelites from the Damara Orogen, Namibia. - Contrib. Miner. Petrol. 90: 322-330.
27. HOFFER, E. (1977): Petrologische Untersuchungen zur Regionalmetamorphose Al-reicher Metapelite im südlichen Damara-Orogen (Südwest-Afrika). - Habilitationsschrift Göttingen, 130 pp.
28. -(1978): On the "late" formation of paragonite and its breakdown in pelitic rocks of the southern Damara Orogen (Namibia). - Contrib. Miner. Petrol. 67: 204-214.
29. -(1983): Compositional variations of minerals in metapelites involved in low to medium grade isograd reactions in the southern Damara Orogen, Namibia/SW-Africa. - In: MARTIN, H. & EDER, F. W. (eds): Intracontinental fold belts. -Springer Berlin, Heidelberg, New York, Tokyo, pp. 745-766.
30. HOFFMANN, C. (1976): Granites and migmatites of the Damara-Belt, South West Africa. Petrography and melting experiments. - Geol. Rdsch. 65: 939-966.
31. 2O. - Terra cognita 8: 66.
32. 2O activities. - J. Petrol. 32: 935-958.
33. 2O undersaturated granitic melts. - In: ASHWORTH, J. R. & BROWN, M. (eds): High-temperature metamorphism and crust anatexis. - Unwin Hyman, London, pp. 87-104.
34. JUNG, S. (1994): Geochemische und petrologische Untersuchungen an Metagraniten, Migmatiten und Metasedimenten des Zentralen Damara-Orogens, Namibia. -Unpubl. Ph. D. Thesis Uni Marburg, pp. 171.
35. JUNG, S., HOFFER, E. & MASBERG, P. (1991): Partial melting due to contact metamorphism in the Central Damara Orogen, Namibia. - Terra abstr. 3: 343-344.
36. JUNG, S., MASBERG, P., HOERNER, S. & HOFFER, E. (1995): Geochemistry of granitic in situ low melt fraction. - Communs geol. Surv. Namibia (in press).
37. KASCH, K. W. (1979): A continent collision model for the tectono-thermal evolution of the (southern) Damara Belt. - 16th Ann. Rep. Precambrian Res. Unit, Univ. Cape Town, pp. 101-107.
38. -(1983 a): Regional P-T variations in the Damara Orogen with particular reference to early high pressure metamorphism along the southern margin. - In: MILLER, R. McG. (ed): Evolution of the Damara Orogen. - Spec. Publ. geol. Soc. S. Afr. 11: 243-253.
39. -(1983 b): Tectonothermal evolution of the southern Damara Orogen. - In: MILLER, R. McG. (ed): Evolution of the Damara Orogen. - Spec. Publ. geol. Soc. S. Afr. 11: 255-265.
40. -(1983 c): Continental collision, suture progradation and thermal relaxation: a plate tectonic model for the Damara Orogen in central Namibia. - In: MILLER, R. McG. (ed): Evolution of the Damara Orogen. - Spec. Publ. geol. Soc. S. Afr. 11: 423-429.
41. KRöNER, A. (1982): Rb-Sr geochronology and tectonic evolution of the Pan-African Damara belt of Namibia (South West Africa). - Amer. J. Sci. 282: 1471-1507.
42. KUKLA, C. (1993): Strontium isotope heterogeneities in amphibolite facies, banded metasediments - A case study from the late Proterozoic Kuiseb Formation of the southern Damara Orogen, Central Namibia. - Mem. geol. Surv. Namibia 15: 138 pp.
43. KUKLA, P. & STANSTREET, I. G. (1991): Record of the Damaran Khomas Hochland accretionary prism in central Namibia: Refutation of an "ensialic" origin of a Late Proterozoic belt. - Geology 19: 473-476.
44. LE BRETON, N. & THOMPSON, A. B. (1988): Fluid absent (dehydration) melting of biotite in metapelites in the early stages of crustal anatexis. - Contrib. Miner. Petrol. 99: 226-237.
45. MARTIN, H. & PORADA, H. (1977 a): The intracratonic branch of the Damara Orogen in S West Africa. I. Discussion of geodynamic models. - Precambrian Res. 5: 311-338.
46. -(1977 b): The intracratonic branch of the Dimara Orogen in South West Africa. II. Discussion of relationships with the Pan-African mobile belt system. -Precambrian Res. 5: 339-357.
47. MASBERG, P., HOFFER, E. & HOERNES, S. (1992): Microfabrics indicating granulite-facies metamorphism in the low-pressure Central Damara Orogen, Namibia. - Precambrian Res. 55: 243-257.
48. -(1994): On the origin of migmatites in the Central Damara Orogen Namibia. Megascopic and microscopic evidences. - J. Czech. Geol. Soc. 39: 66-68.
49. MATTHES, S., OKRUSCH, M. & RICHTER, P. (1972): Zur Migmatit-Bildung im Odenwald. - N. Jb. Miner. Abh. 116: 225-267.
50. MCLELLAN, E. (1984): Deformational behaviour of migmatites and problems of structural analysis in migmatite terrains. - Geol. Mag. 1121: 339-345.
51. MEHNERT, K. R. (1968): Migmatites and the Origin of Granitic rocks. Elsevier Amsterdam, pp. 393.
52. MILLER, C. F. (1985): Are strongly peraluminous magmas derived from pelitic sedimentary sources? - J. Geol. 93: 673-689.
53. MILLER, R. McG. (1983): The Pan-African Damara Orogen of South West Africa/Namibia. - In: MILLER, R. McG. (ed): Evolution of the Damara Orogen. - Spec. Publ. geol. Soc. S. Afr. 11: 431-515.
54. MISCH, P. (1968): Plagioclase composition and non-anatectic origin of migmatite gneisses in Northern Cascade Mountains of Washington state. - Contrib. Miner. Petrol. 17: 1-70.
55. NABHOLZ, K. W. & VOLL, G. (1963): Bau und Bewegung im gotthardmassivischen Mesozoikum bei Ilanz (Graubünden). - Eclogae Geol. Helv. 56: 755-808.
56. NEWTON, R. C. & HANSEN, E. C. (1983): The origin of Proterozoic and late Archean charnockites: evidence from filed relations and experimental petrology. - In: MEDARIS, L. G. Jr., BYERS, C. N., MICKELSON, D. M. & SHANKE, W. C. (eds.): Proceedings of the symposium on the Proterozoic. - Geol. Soc. Amer. Mem. 161: 167-178.
57. NEWTON, R. C., SMITH, J. V. & WINDLEY, B. F. (1980): Carbonic metamorphism, granulites, and crustal growth. - Nature 288: 45-50.
58. PETERSON, J. W. & NEWTON, R. C. (1989): Reversed experiments on biotite-quartz-feldspar melting in the system KMASH: implications for crustal anatexis. - J. Geol. 97: 465-485.
59. PORADA, H. (1989): Pan-African Rifting and orogenesis in Southern to Equatorial Africa and Eastern Brazil. - Precambrian Res. 44: 103-136.
60. PUHAN, D. (1977): Metamorphic temperature determined by means of the dolomite-calcite solvus geothermometer - examples from the Central Damara Orogen (SW Africa). - Contrib. Miner. Petrol. 58: 23-28.
61. -(1983): Metamorphism of siliceous dolomites of the central and the southern part of the Damara Orogen. - In: MARTIN, H. & EDER, F. W. (eds.): Intracontinental fold belts. - Springer, Berlin, Heidelberg, New York, Tokyo, pp. 767-784.
62. SANDER, B. (1970): An introduction of the study of fabrics of geological bodies. - Pergamon Press, New York, 641 pp.
63. SAWYER, E. W. & BARNES, S.-J. (1988): Temporal and compositional differences between subsolidus and anatectic migmatite leucosomes from the Quetico metasedimentary belt, Canada. - J. metamorph. Geol. 6: 437-450.
64. SAWYER, E. W. & ROBIN, P.-Y. F. (1986): The subsolidus segregation of layer-parallel quartz-feldspar veins in greenschist to upper amphibolite facies metasediments. -J. metamorph. Geol. 4: 237-260.
65. SCHMIDT, A. (1982): Geochemische Untersuchungen an Graniten des Damara Orogens Namibia. - Unpubl. Ph. D. Thesis Uni Göttingen, pp. 130.
66. SEDERHOLM, J. J. (1907): On granite and gneiss. - Bull Comm. Géol. Finl. 23: 1-110.
67. SHAW, D. M. (1970): Trace element fractionation during anatexis. - Geochim. Cosmochim. Acta 34: 237-243.
68. SKJERLIE, K. P., PATIÑO DOUCE, A. & JOHNSTON, A. D. (1993): Fluid absent melting of a layered crustal protolith: implications for the generation of anatectic granites. -Contrib. Miner. Petrol. 114: 365-378.
69. SUN, S. S. & MCDOUNOUGH, W. F. (1989): Chemical and isotopic systematics of ocean basalts: implications for mantle composition and processes. - In: SAUNDERS, A. D. & NORRY, M. J. (eds.): Magmatism in the ocean basins. - Geol. Soc. London Spec. Publ. 42: 313-345.
70. TAYLOR, S. R. & MCLENNAN, S. M. (1985): The continental crust: its composition and evolution. - Blackwall Scientific Publications, Oxford London Edinburgh, pp. 312.
71. TRUMBULL, R. B. (1988): Petrology of flecked gneisses in northern Wet Mountains, Fremont County, Colorado. - Geol. Soc. Amer. Bull. 100: 247-256.
72. VIELZEUF, D. & HOLLOWAY, J. R. (1988): Experimental determination of the fluid-absent melting relations in the pelitic system. Consequences for crustal differentiation. -Contrib. Miner. Petrol. 98: 257-276.
73. VOLL, G. (1960 a): Stoff, Bau und Alter in der Grenzzone Moldanubikum/Saxothuringikum in Bayern unter besonderer Berücksichtigung gabbroider, amphibolitischer und kalksilikatischer Gesteine. - Beih. Geol. Jb. 42: 1-382.
74. -(1960 b): New works on petrofabrics. - Liverpool and Manchester Geol. J. 2/3: 503-567.
75. -(1969): Klastische Mineralien aus den Sedimentserien der schottischen Highlands und ihr Schicksal bei aufsteigender Regional-und Kontaktmetamorphose. - Habilitationsschrift, Fakultät für Bergbau und Hüttenwesen der TU Berlin, 360 pp.
76. WATSON, B. E. (1988): The role of accessory minerals in granitoid geochemistry. The origin of granites. - Roy. Soc. London The Hutton meeting Edinburgh, pp. 19-20.
77. WATSON, B. E. & CAPOBIANCO, C. J. (1981): Phosphorous and rare earth elements in felsic magmas: an assessment of the role of apatite. - Geochim. Cosmochim. Acta. 45: 2349-2359.
78. WATT, G. R. & HARLEY, S. L. (1993): Accessory phase controls on the geochemistry of crustal melts and restites produced during water-undersaturated partial melting. -Contrib. Miner. Petrol. 114: 550-566.
79. WEGMANN, C. E. (1935): Zur Deutung der Migmatite. - Geol. Rdsch. 26: 305-350.
80. WHITE, A. J. R. & CHAPPELL, B. W. (1977): Ultrametamorphism and granitoid genesis. - Tectonophysics 43: 7-22.
81. WIMMENAUER, W. (1984): Das prävaristische Kristallin im Schwarzwald. - Fortschr. Miner. 62: 69-86.
82. WINKLER, H. G. F. (1983): A survey of granitic rocks of the Damara Orogen and considerations on their origin. - In: MARTIN, H. & EDER, F. W. (eds): Intracontinental fold belts. - Springer, Berlin, Heidelberg, New York, Tokyo, pp. 817-837.
83. WINKLER, H. G. F., BOESE, M. & MARCOPOULOS, T. (1975): Low temperature granitic melts. - N. Jb. Miner. Mh. 1975: 245-268.
84. WINKLER, H. G. F. & BREITBART, R. (1978): New aspects of granitic magmas. - N. Jb. Miner. Mh. 1978: 463-480.
85. 2O.-N. Jb. Miner. Mh. 1977: 241-247.
86. YARDLEY, B. W. D. (1975): On some quartz-plagiclase veins in the Connemara Schists. -Geol. Mag. 112: 183-190.