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Experimental Studies on Metamorphism of Crustal Rocks Under Mantle Pressures*

Published online by Cambridge University Press:  05 July 2018

Werner Schreyer
Werner Schreyer*
Affiliation:
Institut für Mineralogie, Ruhr-Universität, D-4630 Bochum, F.R. Germany
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Abstract

Metamorphic rocks of undoubted crustal origin have been described in recent years, principally from Mediterranean collision zones that have been subjected to PT conditions along very low geothermal gradients (∼ 7°C/km) and have reached pressures up to 30 kbar. MgAl-rich metapelites develop particularly diagnostic high-pressure minerals and mineral assemblages that have been and are being studied experimentally in model systems involving the components K2O, MgO, Al2O3, TiO2, SiO2, P2O5, and H2O up to pressures of 50 kbar and temperatures of 1000°C.

In the present review the following synthetic phases and phase assemblages are discussed, emphasizing their water-pressure-temperature stability fields (approximated in parentheses here), their reaction relationships, and their known or potential occurrences in metamorphic rocks. Sudoite (0 to ∼ 12 kbar, 150? to 380°C) occurs in very low-grade metapelites. Mg-carpholite (∼ 7 to ∼ 45 kbar, ∼ 200 to 600°C) is found in subducted metabauxites, metapelites, and related quartz veins. Mg-chloritoid (18 to 45 kbar?; 400 to 760°C) has not been found in nature as pure or nearly pure end-member; it requires silica-deficient environments. Yoderite, known in nature only from a single talc-kyanite schist occurrence, has only a small stability field (9 to 18 kbar?, 700 to 870°C?), cannot coexist with quartz, but may be stabilized by Fe3+. Pyrope (∼ 15 to at least 50 kbar, ∼ 700°C to melting), with or without relic coesite inclusions, occurs spectacularly in quartzites. Mg-staurolite (∼ 14 to some 90 kbar?, 700 to 1000°C), recently discovered as inclusions in pyrope, requires silica-deficiency. MgMgAl-pumpellyite is a new synthetic phase in which Mg totally replaces Ca of normal pumpellyite; because of its very high-pressure, low-temperature stability (∼ 37 to at least 55 kbar, < 400 to 780°C) it may not form within our globe. Ellenbergerite, the new high-pressure mineral forming inclusions in pyrope, apparently exhibits a rather composition-dependent stability with Ti-ellenbergerite, requiring higher pressures (> 20 kbar) than P-bearing, Ti-free members; a pure hydrous Mg-phosphate with ellenbergerite structure was synthesized at 10 kbar. Phengites, the widespread MgSi-substituted muscovites, require increasingly high water pressures (up to ∼ 20 kbar) for higher degrees of substitution, but the Al-celadonite end-member is not stable under any conditions; the compositions of phengites coexisting with limiting assemblages such as phlogopite, K-feldspar, and an SiO2 phase are useful geobarometers. The common assemblage Mg-chlorite + Al2SiO5 (mainly kyanite) has an extensive stability field ranging from near zero to 31 kbar at temperatures varying from some 320 to ∼ 760°C depending on pressure. The whiteschist assemblage talc + kyanite (6 to ∼ 45 kbar, 550 to 810°C) plays an important role in collision zone metamorphism as it forms from the greenschist assemblage chlorite + quartz at low grades but is also known to break down into pyrope + coesite at the highest grade observed thus far. The assemblage talc-phengite (11 to at least 35 kbar, 300? to 820°C depending on pressure), on the other hand, is well known from subducted metapelites. At pressures of 15–20 kbar and temperatures of 400–650°C a very K,Mg-rich, siliceous fluid forms as a consequence of the mutual reaction of the minerals K-feldspar and phlogopite (biotite) which are very common in crustal rocks including granites. Such fluids are bound to cause metasomatism in neighbouring mantle rocks which, upon subsequent increase of temperature, produce post-collisional ultrapotassic, lamproitic melts.

Keywords

metamorphismcrustal rockssudoitechloritoidyoderitestaurolitepumpellyiteellenbergeritetalcphengitekyanitepyropecarpholitechloriteMASH system
Type
The Hallimond Lecture
Information
Mineralogical Magazine , Volume 52 , Issue 364 , March 1988 , pp. 1 - 26
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1988

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References

Ackermand, D., Seifert, F., and Schreyer, W. (1975) Contrib. Mineral. Petrol. 50, 79–92.CrossRefGoogle Scholar
Ackcrmann, L., Cemic, L., and Langer, K. (1983) Earth Plant. Sci. Leu. 62, 208–14.CrossRefGoogle Scholar
Beccaluva, L., Biggioggero, B., Chiesa, S., Colombo, A., Fanli, G., Gatto, G.O., Gregnanin, A., Montrasio, A., Piccirillo, E.M., and Tunesi, A. (1983) Mem. Soc. Geol. It. 26, 341–59.Google Scholar
Benin, A., and Golzinger, M.A. (1987) Mineral. Petrol. 36,41–9.Google Scholar
Birch, F., and LcComte, P. (1960) Am. J. Sci. 258, 209–17.CrossRefGoogle Scholar
Bohlen, S.R., Essene, E.J., and Boeltcher, A.L. (1980) Earth Planet. Sci. Lett. 47, 1–10.CrossRefGoogle Scholar
Boyd, F.R., and England, J.L. (1959) Carnegie Inst. Washington Year Book 58, 83–7.Google Scholar
Chopin, C. (1981) J. Petrol. 22, 628–50.CrossRefGoogle Scholar
Chopin, C. (1984) Contrib. Mineral. Petrol. 86, 107–18.CrossRefGoogle Scholar
Chopin, C. (1986) Geol. Soc. Am. Mem. 164, 31–42.Google Scholar
Chopin, C. (1987) Phil. Trans. R. Soc. London A 321, 183–97.Google Scholar
Chopin, C. and Gofie, B. (1981) Contrib. Mineral. Petrol. 76, 260–4.CrossRefGoogle Scholar
Chopin, C. and Maluski, H. (1980) Ibid. 74, 109–22.Google Scholar
Chopin, C. and Monie, P. (1984) Ibid. 87, 388–98.Google Scholar
Chopin, C. and Schreyer, W. (1983) Am. J. Sci. 283-A, 72–96.Google Scholar
Klaska, R., Medenbach, O., and Dron, D. (1986) Contrib. Mineral. Petrol. 92, 316–21.Google Scholar
Compagnoni, R. (1977) Rend. Soc. I tat. Mineral. Petrol. 33, 325–74.Google Scholar
Deer, W.A., Howie, R.A., and Zussman, J. (1986) Rockformiiuj minerals. Vol. 1 B, Longman, London.Google Scholar
Droop, G.T. R. (1985) J. Metamorphic Geol. 3, 371–402.CrossRefGoogle Scholar
Ernst, W.G. (1963) Am. Mineral. 48, 1357–74.Google Scholar
Ernst, W.G. (1980) J. Geophys. Res. 85, 7045–55.CrossRefGoogle Scholar
Fransolel, A.-M., and Bourguignon, P. (1978) Can. Mineral. 16, 365–73.Google Scholar
Fransolel, A.-M., and Bourguignon, P. and Schreyer, W. (1984) Contrib. Mineral. Petrol. 86, 409–17.CrossRefGoogle Scholar
Franz, G., Thomas, S. and Smith, D.C. (1986) Ibid. 92, 71–85.Google Scholar
Gofle, B., and Chopin, C (1986) Schweiz. Mineral. Petrogr. Mitt. 66, 41–52.Google Scholar
Gofle, B., and Chopin, C and Velde, B. (1984) Earth Planet. Sci. Lett. 68, 351–60.Google Scholar
Haidinger, W. (1823) Trans. Roy. Soc. Edinburgh, 1–21.Google Scholar
Halbach, H., and Chatterjee, N.D. (1982) In High- Pressure Researches in Geoscience (W. Schreyer, ed.) Stuttgart, Schweigerbarth, 475–91.Google Scholar
Hays, J.F. (1967) Carnegie Inst. Washington Year Book 65, 234–9.Google Scholar
Higgins, J.B., Ribbe, P., and Nakajima, Y. (1982) Am. Mineral. 67, 76–84.Google Scholar
Holdaway, M.J. (1971) Am. J. Sci. 271, 97–131.CrossRefGoogle Scholar
Johannes, W., and Puhan, D. (1971) Contrib. Mineral. Petrol. 31, 28–38.CrossRefGoogle Scholar
Kilahara, S., Takenouchi, S., and Kennedy, G. G (1966) Am. J. Sci. 264, 223–33.Google Scholar
Kramm, U. (1980) NeuesJahrb. Mineral. Abh. 138, 1–13.Google Scholar
Kulke, H., and Schreyer, W. (1973) Earth Planet. Sci. Lett. 18, 324–8.CrossRefGoogle Scholar
Latlard, D., and Schreyer, W. (1981) Bull. Mineral. 104, 431–40.Google Scholar
Latlard, D., and Schreyer, W. (1983) Contrib. Mineral. Petrol. 84, 199–214.CrossRefGoogle Scholar
McKie, D. (1959) Mineral. Mag. 32, 282–307.Google Scholar
Maresch, W.V. (1977) Tectonophys. 43, 109–25.CrossRefGoogle Scholar
Massonne, H.J. (1983) EOS 64, 875.Google Scholar
Massonne, H.J. and Schreyer, W. (1983) Terra Cogn. 3, 187.Google Scholar
Massonne, H.J. and Schreyer, W. (1984) 27th Geol. Congr.. Moscow, Abstr. 4, 392.Google Scholar
Massonne, H.J. and Schreyer, W. (1985) Terra Cogn. 5, 432.Google Scholar
Massonne, H.J. and Schreyer, W. (1986) Neues Jahrb. Mineral. Abh. 153, 177–215.Google Scholar
Massonne, H.J. and Schreyer, W. (1987) Contrib. Mineral. Petrol. 96, 212–24.CrossRefGoogle Scholar
Miller, C. (1986) Schweiz. Mineral. Petrogr. Mitt. 66, 139–44.Google Scholar
Mirwald, P.W., and Massonne, H.J. (1980) J. Geophys. Res. 85, 6983–90.CrossRefGoogle Scholar
Mork, M.B. E. (1985) Chem. Geol. 50, 283–310.CrossRefGoogle Scholar
Mottana, A., and Schreyer, W. (1977) Neues Jahrb. Mineral. Abh. 129, 113–38.Google Scholar
Ringwood, A.E., and Major, A. (1967) Earth Planet. Sci. Lett. 2, 130–3.CrossRefGoogle Scholar
Robertson, E.C. Birch, F., and MacDonald, G.J. F. (1957) Am. J. Sci. 255, 15–37.CrossRefGoogle Scholar
Robinson, P., Ross, M., Jaffe, H.W. (1971) Am. Mineral. 56, 1005–41.Google Scholar
Schiffman, P., and Liou, J.G. (1980) J. Petrol. 21,441–74.CrossRefGoogle Scholar
Schliestedt, M. (1986) Ibid. 27, 1437–59.Google Scholar
Schreyer, W. (1968) Carnegie Inst. Washington Year Book 66, 380–92.Google Scholar
Schreyer, W. (1977) Tectonophys. 43, 127–44.CrossRefGoogle Scholar
Schreyer, W. (1985) Fortschr. Mineral. 63, 227–61.Google Scholar
Schreyer, W. (1986) Ber. Bunsen-Ges. Phys. Chem. 90, 748–55.CrossRefGoogle Scholar
Schreyer, W. and Seifert, F. (1969n) Am. J. Sci. 267-A, 407–43.CrossRefGoogle Scholar
Schreyer, W. and Seifert, F. (1969) Ibid. 267, 371–88.Google Scholar
Schreyer, W. and Seifert, F. and Yoder, H.S., Jr. (1964) Neues Jahrb. Mineral. Abh. 101, 271–342.Google Scholar
Schreyer, W. and Seifert, F. (1968) Carnegie Inst. Washington Year Book66, 367–80.Google Scholar
Bailer, T., and Chopin, C. (1985) Terra Cogn. 5, 327.Google Scholar
Maresch, W.V., Medenbach, O., and Bailer, T. (1986) Nature 321, 510–11.Google Scholar
Bailer, T., and Chopin, C. and Bailer, T. (1987A) Terra Cogn. 7, 385.Google Scholar
Bailer, T., and Chopin, C. and Bailer, T. (19876) Adv. Phys. Geochem. (in press).Google Scholar
Massonne, H.J., and Chopin, C. (1987c) The Geochemical Soc. Spec. Pubt. 1, 155–63.Google Scholar
Sclar, C.B., and Carrison, L. (1966) Science 153, 1285–6.CrossRefGoogle Scholar
Seidel, E. (1978) Unpubl. Habil. Thesis, Braunschweig, 145 pp.Google Scholar
Seiferl, F. (1973) Contrib. Mineral. Petrol. 41, 171–8.CrossRefGoogle Scholar
Seidel, E. (1974) J. Geol. 82, 173–204.Google Scholar
Seidel, E. (1975) Am. J. Sci. 275, 57–87.Google Scholar
Spear, F.S., and Franz, G. (1986) Lithos 19, 219–34.CrossRefGoogle Scholar
Theye, T., and Seidel, E. (1987) Terra Cogn. 7, 288.Google Scholar
Thompson, R.R. and Fowler, M.B. (1986) Contrib Mineral. Petrol. 94, 507–22.CrossRefGoogle Scholar
Toriumi, M. (1986) J. Petrol. 27, 1395–408.CrossRefGoogle Scholar
Velde, B. (1965) Am. J. Sci. 263, 886–913.CrossRefGoogle Scholar
Viswanalhan, K., and Seidel, E. (1979) Contrib. Mineral Petrol. 40, 41–7.CrossRefGoogle Scholar
Vrana, S., and Barr, M.W. C. (1972) Mineral. Mag. 38 837–46.CrossRefGoogle Scholar
Yamamoto, K., and Akimoto, S. (1977) Am. J. Sci. 277, 288–312.CrossRefGoogle Scholar
Yoshiasa, A., and Matsumolo, T. (1985) Am. Mineral 70, 1011–19.Google Scholar

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