Hostname: page-component-8448b6f56d-wq2xx Total loading time: 0 Render date: 2024-04-24T09:02:09.369Z Has data issue: false hasContentIssue false
  • English
  • Français

Mineral parageneses and metamorphic reactions in metasedimentary enclaves from the Archaean Gneiss Complex of north-west India

Published online by Cambridge University Press:  05 July 2018

Ram. S. Sharma  and
Brian F. Windley
Ram. S. Sharma
Affiliation:
Department of Geology, Banaras Hindu University, Varanasi, 221005, India
Brian F. Windley
Affiliation:
Department of Geology, The University, Leicester LE1 7RH, UK
Get access Rights & Permissions [Opens in a new window]

Abstract

Three metasedimentary enclaves up to a kilometre in length of contrasting compositions within the polymetamorphic Banded Gneissic Complex (> 2580Ma) have been studied for their mineral parageneses and metamorphic conditions. The largest enclave, consisting of kyanite-chloritoid-muscovite schist with quartz or corundum, and kyanite-fuchsite-corundum ± diaspore, was metamorphosed at most under lower amphibolite conditions, and is thus not isofacial with the surrounding schists and gneisses (of the ‘basement’ complex) which reached sillimanite-grade metamorphism in the last orogenic cycle (Aravalli: 1650–950Ma Orogeny) in Rajasthan.

The second enclave is a calc-silicate rock which occurs as a small lens. The presence of two generations of wollastonite which formed during different metamorphic events in the calcite-quartz-grossularite-anorthite-clinopyroxene assemblage indicates polymetamorphism.

The third enclave is a metabasic rock which records a complete polymetamorphic history in discontinuous zones in garnet coexisting with hornblende-chlorite-plagioclase-quartz±epidote. To explain the garnet zoning a model involving partial resorption of early garnet during the initial recrystallization stage of superimposed regional metamorphism is preferred to the alternative based on a single prograde metamorphism and retrogression.

The mineralogy of the calc-silicate and metabasic enclaves gives a recrystallization temperature of c. 700°C and a pressure in the range of 8–3 kbar during the second metamorphism.

Type
Research Article
Information
Mineralogical Magazine , Volume 48 , Issue 347 , June 1984 , pp. 195 - 209
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1984

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Amit, O. (1976) Lithos, 9, 259–62.CrossRefGoogle Scholar
Atherton, M. P. (1968) Contrib. Mineral. Petrol. 18, 347–71.CrossRefGoogle Scholar
Atherton, M. P. and Edmunds, W. M. (1966) Earth Planet. Sci. Lett. 1, 185–93.CrossRefGoogle Scholar
Bethune, P. de, Laduron, D., and Bocqut, J. (1975) Contrib. Mineral. Petrol. 50, 197–204.CrossRefGoogle Scholar
Birk, D. (1973) Can. Mineral. 12, 124–8.Google Scholar
Boettcher, A. L. (1970) J. Petrol. 11, 337–9.CrossRefGoogle Scholar
Chatterjee, N. D., and Johannes, W. (1974) Contrib. Mineral. Petrol. 48, 89–114.CrossRefGoogle Scholar
Crawford, A. R. (1970) Can. J. Earth Sci. 7, 91–110.CrossRefGoogle Scholar
Day, H. W. (1976) Am. J. Sci. 276, 1254–84.CrossRefGoogle Scholar
Deer, W. A., Howie, R. A., and Zussman, J. (1962) Rock-forming minerals, 3, Longmans: London.Google Scholar
Droop, G. T. R., and Treloar, P. J. (1981) Scott. J. Geol. 2, 85–102.CrossRefGoogle Scholar
Edmunds, W. M., and Atherton, M. P. (1971) Lithos. 4, 147–61.CrossRefGoogle Scholar
Evans, B. W. and Guidotti, C. V. (1966) Contrib. Mineral. Petrol. 12, 25–62.CrossRefGoogle Scholar
Fawcett, J. J., and Yoder, H. S., Jr. (1966) Am. Mineral. 51, 353–80.Google Scholar
Fyfe, W. S., Price, N. J., and Thompson, A. B. (1978) Fluids in the Earth's Crust, Elsevier, Amsterdam.Google Scholar
Ganguly, J. (1969) Am. J. Sci. 267, 910–44.CrossRefGoogle Scholar
Ganguly, J. and Kennedy, G. C. (1974) Contrib. Mineral. Petrol. 48, 137–48.CrossRefGoogle Scholar
Gordon, T. M. and Greenwood, H. J. (1971) Am. Mineral. 56, 1674–88.Google Scholar
Graham, C. M. (1974) Contrib. Mineral. Petrol. 47, 165–85.CrossRefGoogle Scholar
Grant, J. A., and Weiblen, P. W. (1971) Am. J. Sci. 270, 281–97.CrossRefGoogle Scholar
Greenwood, H. J. (1967) Am. Mineral. 52, 1669–80.Google Scholar
Haas, H. H. (1972) Ibid, 57, 1375–84.Google Scholar
Heron, A. M. (1953) Mem. Geol. Sun. India. 79, 389 pp.Google Scholar
Holdaway, M. J. (1971) Am. J. Sci. 271, 97–131.CrossRefGoogle Scholar
Hollister, L. S. (1966) Science. 154, 1647–51.CrossRefGoogle Scholar
Hoschek, G. (1969) Contrib. Mineral. Petrol. 22, 208–32.CrossRefGoogle Scholar
Hsu, L. C. (1968) J. Petrol. 9, 40–83.CrossRefGoogle Scholar
Kerrick, D. M. (1972) Am. J. Sci. 272, 946–58.CrossRefGoogle Scholar
Laird, J. (1980) J. Petrol. 21, 1–37.CrossRefGoogle Scholar
Laird, J. and Albee, A. L. (1981) Am. J. Sci. 281, 127–75.CrossRefGoogle Scholar
Leake, B. E. (1965) Am. Mineral. 50, 843–51.Google Scholar
Liou, J. G. (1973) J. Petrol. 14, 381–413.CrossRefGoogle Scholar
Liou, J. G. Kuniyoshi, S., and Ito, K. (1974) Am. J. Sci. 214, 613-32CrossRefGoogle Scholar
McAteer, C. (1976) Contrib. Mineral. Petrol. 55, 293–301.CrossRefGoogle Scholar
Misch, P., and Rice, J. M. (1975) J. Petrol 16, 1–21.CrossRefGoogle Scholar
Morrison, E. R. (1972) Mineral. Resour. Ser. Rhod. geol. Surv. 16, 1–24.Google Scholar
Muller, G., and Schneider, A. (1971) Contrib. Mineral. Petrol. 31, 178–200.CrossRefGoogle Scholar
Naha, K., Chaudhuri, A. K., and Mukherji, P. (1967) Ibid, 15, 191–201.Google Scholar
Naha, K. and Halyburton, R. V. (1974) Precamb. Res. 155, 73.Google Scholar
Newton, R. C. (1966) Am. J. Sci . 264, 204–22.CrossRefGoogle Scholar
Naha, K. and Haselton, H. T. (1981) In Thermodynamics of Minerals and Melts, Springer (New York), 129–45.Google Scholar
Novak, J. M. and Holdaway, M. J. (1981) Am. Mineral. 6651, 69.Google Scholar
Oba, T. (1980) Contrib. Mineral. Petrol . 71, 247–56.CrossRefGoogle Scholar
Orville, P. M. (1972) Am. J. Sci. 272, 234–72.CrossRefGoogle Scholar
Piwinskii, A. J., and Wyllie, P. J. (1970) J. Geol 78, 52–76.CrossRefGoogle Scholar
Richardson, S. W. (1968) J. Petrol. 9, 468–88.CrossRefGoogle Scholar
Robie, R. A., Hemingway, B. S., and Fischer, J. R. (1979) Bull. U.S. geol. Surv. 1452.Google Scholar
Sharma, R. S. (1977) Precamb. Res. 4, 133–62.CrossRefGoogle Scholar
Sharma, R. S. (1982) Indian J. Earth Sci. 10 (in press).Google Scholar
Sharma, R. S. (1983) Geol. Soc. Newsletter, 12, no. 2, p. 10.Google Scholar
Sharma, R. S. and MacRae, N. D. (1981) Contrib. Mineral. Petrol. 78, 48–60.CrossRefGoogle Scholar
Sharma, R. S. and Narayan, V. (1975) Neues Jahrb. Mineral. Abh. 124, 190–222.Google Scholar
Schreyer, W., Werding, G., and Abraham, K. (1981) J. Petrol. 22, 191–231.CrossRefGoogle Scholar
Spear, F. S. (1980) Contrib. Mineral. Petrol. 72, 33–41.CrossRefGoogle Scholar
Spear, F. S. (1981) Ibid, 77, 355–64.Google Scholar
Thompson, A. B. (1976) Am. J. Sci. 276, 401–24.CrossRefGoogle Scholar
Thompson, A. B., Tracy, R. J., Lyttle, P. T., and Thompson, J. B., Jr.(1977) 277, 1152–67.CrossRefGoogle Scholar
Thompson, J. B. Jr., (1957) Am. Mineral. 42, 842–58.Google Scholar
Tracy, R. J., Robinson, P. R., and Thompson, A. B. (1976) Ibid, 61, 762–75.Google Scholar
Wells, P. R. A. (1979) J. geol. Soc. hand. 136, 663–71.CrossRefGoogle Scholar
Wenk, E, and Keller, F. (1969) Schweitz. Mineral. Petrogr. Mitt. 49, 157–98.Google Scholar
Windom, K. E., and Boettcher, A. L. (1976) Am. Minera. 61, 889–96.Google Scholar
Yardley, B. W. D. (1981) Neues Jahrb. Mineral. Mh 127–32.Google Scholar