Ordovician orogeny in the Alps: a reappraisal

详细信息    查看全文

• 作者：Roger Zurbriggen
• 关键词：Ordovician forearc magmatism ; Cratonization ; Alaskan ; type subduction–accretion ; Ceneri gneiss ; Strona ; Ceneri zone ; Lachlan fold belt
• 刊名：International Journal of Earth Sciences
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：104
• 期：2
• 页码：335-350
• 全文大小：2,417 KB
• 参考文献：1. Arnold A (1970) Die Gesteine der Region Nalps-Curnera im nord?stlichen Gotthardmassiv, ihre Metamorphose und ihre Kalksilikatfels-Einschlüsse (Petrographische Untersuchungen im Bereich der Anlagen der Kraftwerke Vorderrhein). Beitr?ge zur geologischen Karte der Schweiz, Neue Folge 138
  2. Barker F, Farmer GL, Ayuso RA, Plafker G, Lull JS (1992) The 50?Ma granodiorite of the Eastern Gulf of Alaska: melting in an accretionary prism in the forearc. J Geophys Res 97(B5):6757-778 CrossRef
  3. Boriani A (1970) The microstructure of “Cenerigneiss- Rend. Soc. It. Min. Petr. 26:487-01
  4. Boriani A, Colombo A (1979) Gli “Gneiss chiari-tra la Valsesia e il Lago di Como. Rend. Soc. It. Min. Petr. 35(1):299-12
  5. Boriani A, Origoni Giobbi E, Del Moro A (1983) Composition, level of intrusion and age of the ‘Serie dei Laghi-orthogneisses (Northern Italy-Ticino, Switzerland). Rend Soc Ital Miner Pet 38(1):191-05
  6. Boriani A, Giobbi Origoni E, Pinarelli L (1995) Paleozoic evolution of southern Alpine crust (northern Italy) as indicated by contrasting granitoid suites. Lithos 35:47-3 CrossRef
  7. Borsi S, Del Moro A, Sassi FP (1980) Zirpoli G (1980) New petrographic and radiometric data on the Oetztal and Stubai orthogneisses (Eastern Alps). Neues Jahrbuch für Mineralogie. Monatshefte 2:75-7
  8. Brown M (1994) The generation, segregation, ascent and emplacement of granite magma: the migmatite-to-crustally-derived granite connection in thickened orogens. Earth-Sci Rev 36:83-30 CrossRef
  9. Castro A, Moreno-Ventas I, De la Rosa JD (1991) H-type (hybrid) granitoids: a proposed revision of the granite-type classification and nomenclature. Earth Sci Rev 31:237-53 CrossRef
  10. Castro A, Garcia-Casco A, Fernandez C, Corretgé LG, Moreno-Ventas I, Gerya T, L?w I (2009) Ordovician ferrosilicic magmas: experimental evidence for ultrahigh temperatures affecting a metagreywacke source. Gondwana Res 16:622-32 CrossRef
  11. Chappell BW, White AJR (1974) Two contrasting granite types. Pac Geol 8:173-74
  12. Chappell BW, White AJR, Wyborn D (1987) The importance of residual source material (restite) in granite petrogenesis. J Petrol 28(6):1111-138 CrossRef
  13. Chappell BW, White AJR, Williams IS (1991) A traverse section through granites of the Lachlan Fold Belt. Excursion guide, second Hutton symposium on granites and related rocks, Canberra, 15-1 September 1991, Bureau of Mineral Resources, Geology and Geophysics, Record 1991/22
  14. Clift P, Vannucchi P (2003) Controls on tectonic accretion versus erosion in subduction zones: implications for the origin and recycling of the continental crust. Rev Geophys 42:1-1
  15. Colombo A, Siletto GB, Tunesi A (1994) Pre-Variscan magmatism in the central Southern Alps: the Monte Fioraro magmatic complex. Schweiz Mineral Petrogr Mitt 74:127-35
  16. Crook KAW (1980) Fore-arc evolution and continental growth: a general model. J Struct Geol 2(3):289-03 CrossRef
  17. Dalziel IWD (1992) Antarctica: a tale of two super-continents? Ann Rev Earth Planet Sci 20:501-26 CrossRef
  18. Dalziel IWD, Dalla Salda LH, Gahagan LM (1994) Paleozoic Laurentia–Gondwana interaction and the origin of the Appalachian–Andean mountain system. Geol Soc Am Bull 106:243-52 CrossRef
  19. Debon F, Le Fort P (1988) A cationic classification of common plutonic rocks and their magmatic associations: principles, method, applications. Bull Minér 111:493-10
  20. D’Lemos RS, Brown M, Strachan RA (1992) Granite magma generation, ascent and emplacement within a transpressive orogen. J Geol Soc Lond 149:487-90 CrossRef
  21. Ellis DJ, Obata M (1992) Migmatite and melt segregation at Cooma, New Sout
• 刊物类别：Earth and Environmental Science
• 刊物主题：Earth sciences
  Geology
  Geophysics and Geodesy
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1437-3262

文摘

An important part of the pre-Mesozoic basement of the Alps is the product of orogenic processes occurred in Ordovician times. Most of the geological constrains for this reconstruction have been obtained by the study of the Strona-Ceneri zone in the Southern Alps, where Alpine overprint was weak. The erosion of late Pan-African belts delivered large amounts of greywackes and pelites into subduction zones along Gondwana. The sediments were subducted and accreted to form wide complexes. As a result of the large sediment input, subduction retreated and the mantle-derived magmas intruded the base of the fertile “mud pile.-This initiated substantial anatexis to produce peraluminous magmas, which intruded and extruded syntectonically. Thereby, the predominantly steeply structured subduction–accretion complex provided ideal pathways for the uprising magmas, and down-thrusting host rocks to result in an isostatically stable crust. The SE Australian Lachlan fold belt is interpreted as an upper crustal analog of the Strona-Ceneri zone. Based on the combination of their geology, a crustal profile through an Alaskan type of orogen is drawn.