Advertisement

Differentiation Mechanism of Magma at Arc Volcanoes

  • Takeru Yanagi
Chapter
Part of the Lecture Notes in Earth Sciences book series (LNEARTH, volume 136)

Abstract

Crystallization differentiation in open-system magma chambers appears to be the most suitable differentiation mechanism that can transform primitive basaltic magma into magma of upper continental crust composition. However, the evidence to support existence of such a differentiation mechanism is necessary. If this differentiation mechanism is working, the potassium content, for example, of magma in the chamber will increase first rapidly with time, and then gradually increase, and finally it will become constant at steady-state concentration. The steady-state concentration of this element is about 20 times the initial concentration. This time-dependant variation is simple and hence would likely be captured in the geologic record. To find this pattern, it is necessary to survey volcanoes where evolving magma often erupts at the surface. Such a survey enables us to trace a time-dependent variation of potassium contents in the lavas.

Keywords

Volcanic Rock Continental Crust Magma Chamber Parental Magma Potassium Content 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

References

  1. Condie KC (1993) Chemical composition and evolution of the upper continental crust: contrasting results from surface samples and shales. Chem Geol 104:1–37CrossRefGoogle Scholar
  2. Fourth Stage Volcano Catalog Committee for Quaternary Volcanoes (2002) Volcano data base web version. http://www.geo.chs.nihon-u.ac.jp/tchiba/volcano/kaz-table.htm
  3. Fujiwara A (1988) Tholeiitic and calc-alkaline magma series at Adatara volcano, northeast Japan: geochemical constraints on their origin. Lithos 22:135–158CrossRefGoogle Scholar
  4. Gao S, Luo T-C, Zhang B-R, Zhang H-F, Han YW, Zhao Z-D, Hu Y-K (1998) Chemical composition of the continental crust as revealed by studies in East China. Geochim Comsochim Acta 62:1959–1975CrossRefGoogle Scholar
  5. Hayatsu K (1976) Geological study of the Myoko volcanoes. Part 1, Stratigraphy. Mem Coll Sci, Kyoto Univ, Ser B 42: 131 pGoogle Scholar
  6. Hayatsu K, Shimizu S, Itaya T (1994) Volcanic history of Myoko volcano group, Central Japan, Poly-generation volcano. J Geogr Tokyo Geogr Soc 103:207–220 (In Japanese with English abstract)Google Scholar
  7. Hurley PM, Hughes H, Faure G, Fairbairn HW, Pinson WH (1962) Radiogenic strontium-87 model of continental formation. J Geophys Res 67:5315–5334CrossRefGoogle Scholar
  8. Kimura JI, Yoshida T (1999) Magma plumbing system beneath Ontake volcano, central Japan. Island Arc 8:1–29CrossRefGoogle Scholar
  9. Notsu K, Kita I, Yamaguchi T (1985) Mantle contamination under Akagi volcano, Japan, as inferred from combined Sr-O isotope relationships. Geophys Res Lett 12:365–368CrossRefGoogle Scholar
  10. Ogata M (1993) Magmatic differentiation and growth history of Taradake volcano, Northwestern Kyushu, Japan. Ph.D. Thesis, Kyushu University, 140 pGoogle Scholar
  11. Sakuyama M (1981) Petrological study of the Myoko and Kurohime volcanoes, Japan; crystallization sequence and evidence for magma mixing. J Petrol 22:553–583Google Scholar
  12. Shaw DM, Cramer JJ, Higgins MD, Truscott MG (1986) Composition of the Canadian Precambrian shield and the continental crust of the earth. In: Dawson JB, Carswell DA, Hall J, Wedepohl KH (eds) The nature of the lower continental crust, vol 24, Geological Society Special publication. Blackwell Scientific Publication, Oxford, pp 275–282Google Scholar
  13. Sugimoto T (1999) Magmatic differentiation and evolution of a chamber system beneath the Unzen Volcano. Ph.D. Thesis, Kyushu University, 141 pGoogle Scholar
  14. Taylor SR (1965) The application of trace element data to problems in petrology. In: Ahrens LH, Press F, Runcorn SK, Urey HC (eds) Physics and chemistry of the earth, vol 6. Pergamon, London, pp 133–214Google Scholar
  15. Taylor SR, McLennan SM (1985) The continental crust: its composition and evolution. Blackwell Scientific Publication, Carlton, 312 pGoogle Scholar
  16. Wedepohl KH (1995) The composition of the continental crust. Geochim Cosmochim Acta 59:1217–1232CrossRefGoogle Scholar
  17. Yanagi T, Ishizaka K (1978) Batch fractionation model for the evolution of volcanic rocks in an island arc: an example from central Japan. Earth Planet Sci Lett 40:252–262CrossRefGoogle Scholar
  18. Yanagi T, Yamashita K (1994) Genesis of continental crust under island arc conditions. Lithos 33:209–223CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  1. 1.FukuokaJapan

Personalised recommendations