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Interpretations of Staurolite Porphyroblast and Pseudomorph Formed During Polymetamorphism Using THERMOCALC  

Kim Hyeong-Soo (Department of Earth Science Education, Kyungpook National University)
Publication Information
The Journal of the Petrological Society of Korea / v.15, no.1, 2006 , pp. 10-24 More about this Journal
Abstract
Staurolite grains in staurolite, kyanite and sillimanite zones occurred in the Littleton Formation, Northcentral Massachusetts have interpreted to form by Barrovian-type metamorphism during Acadian orogeny. However, various occurrence of staurolite in the three zones, (a) porphyroblast, (b) randomly oriented and coarse-grained muscovite pseudomorph after staurolite, (c) recrystallized staurolite at the margin of garnet porphyroblast and within the pseudomorph, indicates that they have resulted from polymetamorphism. Staurolite in these three metamorphic zones can be formed by demise of chlorite or chloritoid that depends on difference of bulk-rock compositions and changes of P-T conditions. Staurolite modal proportion calculated in MnNCKFHASH system using THERMOCALC program reveals that staurolite could have grown with garnet with increasing pressure and temperature, if it coexist with chlorite. After demise of chlorite and appearance of biotite, staurolite mode decrease with increasing pressure and temperature. Therefore, based on the previous P-T paths for the Acadian metamorhism, staurolite porphyroblast grew with garnet during 400-370 Ma. Randomly oriented and coarse-grained muscovite pseudomorphs after staurolite probably have grown due to heating with appearance of kyanite and sillimanite. Consequently, pseudomorphisrn of staurolite occurred by heating derived from locally intense Alleghanian shearing (ca. 320-300 Ma) overprinted the Acadian metamorphism. Recrystallized fine-grained staurolite in sillimanite zone observed between the grain boundaries of muscovite in the pseudomorphs and at the edge of garnet porphyrobasts has formed during decreasing temperature and pressure (ca. 300-280 Ma) after peak temperature (ca. $700^{\circ}C$) of the Allegllanian metamorphism.
Keywords
Staurolite; Pseudomorph; Porphyroblast; Polymetamorphism; THERMOCALC;
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  • Reference
1 Forster, C.T. Jr., 1983, Thermodynamic models of biotite pseudomorphs after staurolite. Am. Minerl., 68, 389-397
2 Harrison, T.M., Spear, F.S. and Heizler, M.T., 1989, Geochronologic studies in central New England II: Post-Acadian hinged and differentiated uplift. Geology, 17, 185- 189   DOI
3 Hollocher, K.T., 1987, Systematic retrograde metamorphism of sillimanite-staurolite schist, New Salem area, Massachusetts. Geol. Soc. Am. Bull., 98, 621-634   DOI
4 Johnson, S.E. and Vernon, R.H., 1995, Stepping stones and pitfalls in deformation of anticlockwise P-T-t path: the low-P, high-T Cooma Complex, Australia. Jour. Metam. Geol., 13, 165-183   DOI   ScienceOn
5 Kretz, R., 1983, Symbols for rock-forming minerals. Am. Mineral., 68, 277-279
6 Robinson, P. and Tucker, R.D., 1996, The Acadian in central New England: New problems based on U-Pb ages of igneous zircon and metamorphic monazite and sphene (abstarct). Geol. Soc. Am. Abstract with Program, 28, 94
7 Robinson, P., Tucker, R.D., Gromet, L.P., Ashenden, D.D., Williams, M.L., Reed, R.M. and Peterson, V.L., 1992, The Pelham Dome, Central Massachusetts: stratigraphy, geochronology, structure and metamorphism. In: P. Robinson and J.B. Brady (Eds), Guidebook for Field Trips in the Connecticut Valley Region of Massachusetts and Adjacent States, New England Intercollegiate Geological Conference, Amherst, Massachusetts 1, 132-169
8 Tucker, R.D. and Robinson, P., 1990, Age and setting of the Bronson Hill magmatic arc: A re-evaluation based on UPb zircon ages in southern New England. Geol. Soc. Am. Bull. 102, 1404-1419   DOI
9 Zartman, R.E., 1988, Three decades of geological studies in the New England Appalachians. Geol. Soc. Am. Bull., 100, 1168-1180   DOI
10 Vernon, R.H., 1982, Isobaric cooling of two regional metamorphic complexes related to igneous intrusions in southeastern Australia. Geology, 10, 76-81   DOI
11 Kim H.S. and Bell T.H., 2005, Combining compositional zoning and foliation intersection axes (FIAs) in garnet to quantitatively determine early P-T-t paths in multiply deformed and metamorphosed schist: north central Massachusetts, USA. Contrib. Mineral. Petrol., 149, 141-163   DOI
12 Spaer, F.S., 1993, Metamorphic phase equilibria and pressure- temperature-time path. Mineralogical Society of America, Monograph Series, Wasgington D.C., 799 p
13 Tracy, R.J., Robinson, P. and Thompson, A.B. 1976, Garnet composition and zoning in the determination of temperature and pressure of metamorphism. Am. Mineral., 61, 762-775
14 Moecher, D.P., 1999, The distribution, style and intensity of Alleghanian metamorphism in south-central New England: Petrologic evidence from the Pelham and Willimantic Domes. Jour. Geol., 107, 449-471   DOI
15 Reed, R.M. and Williams, M.L., 1989, Petrofabric kinematic indicators in the northern portion of the Pelham domes, north-central Massachusetts (abstract). Geol. Soc. Am. Abstract with Programs, 21, 60
16 Guitotti, C.V., 1993, Textural aspects of high T-low P polymetamorphism in the Rangeley area, western Maine: general implications for studies of Acadian metamorphic rocks in New England (abstarct). Geol. Soc. Am. Abstract with Program, 25, A21
17 Mahar E.M., Baker J.M., Powell R., Holland, T.J.B. and Howell, N., 1997, The effect of Mn on mineral stability in metapelites. Jour. Metam. Geol., 15, 223-238   DOI   ScienceOn
18 Tinkham, D.K., Zuluaga, C.A. and Stowell, H.H., 2001, Metapelite phase equilibria modeling in MnNCKFMASH: The effect of variable $Al_{2}O_{3}$ and MgO/(MgO+FeO) on mineral stability. Geol. Material. Res., 3, 1-42
19 Kim, H.S., 2001, A new approach to distinguishing multiple phases of metamorphism and deformation: Application to the Northeastern Appalachian. Geosciences Journal, 5, 65-84   DOI   ScienceOn
20 Guidotti, C.V., Cheney, J.T. and Hernry, D.J., 1988, Compositional variation of biotite as a function of metamorphic reactions and mineral assemblage in the pelitic schists of western Maine. Am. Jour. Sci., 288A, 270-292
21 Tucker, R.D., Robinson, P. and Hollocher, K.T., 1990, U-Pb zircon, titanite, and monazite dating in basement rocks of the Bronsonhill anticlinorium, central Massachusetts, Geol. Soc. Am. Abstract with Program, 20, A216
22 Bell T.H. and Kim, H.S., 2004, Preservation of deformation and metamorphism through extensive younger orogenic overprinting: Alleghanian versus Acadian orogenesis in central New England. Jour. Struct. Geol., 26, 1591-1613   DOI   ScienceOn
23 김형수, 2000, 뉴잉글랜드 펠람돔 주변부 데본기 변성 이질암의 변성 온도-압력 경로. 한국암석학회지, 9, 211- 237
24 Fyfe, W.S., Price, N.J. and Thompson, A.B., 1978, Fluids in the Earth's crust. Elsvier, Amsterdam
25 Robinson, P., 1967, Gneiss domes and recumbent folds of the Orange area, west central Massachusetts. Guidebook New England Intercollegiate Geological Conference, Amherst, Massachusetts, 17-47
26 Guidotti, C.V. and Johnson, S.E., 2002, Pseudomorphs and associated microtextures of western Maine, USA. Jour. Struct. Geol., 24, 1139-1156   DOI   ScienceOn
27 Brodie, K.H. and Rutter, E.H., 1985, On the relationship between deformation and metamorphism with special reference to the behaviour of basic rocks. In: Metamorphic Reactions, Kinetics, Textures and Deformations (eds Thompson, A.B., and Rubie, D.C.). Advanced in Physical Geochemistry, 4, 138-179
28 Powell, R. and Holland, T.J.B., 1988, An internally consistent dataset with uncertainties and correlation; 3, Applications to geobarometry, worked examples and a computer program. Jour. Metam. Geol., 6, 173-204   DOI
29 Powell, R., Holland, T.J.B. and Worley, B., 1998, Calculating phase diagrams involving solid solutions via non-linear equations, with examples using THERMOCALC. Jour. Metam. Geol., 16, 577-58   DOI   ScienceOn
30 Guidotti, C.V., 1970, The mineralogy and petrology of the transition from the lower to upper sillimanite zone in the Oquossoc area, Maine. Jour. Petrol., 11, 277-336   DOI
31 Zen, E-an., Goldsmith, R., Ratcliffe, N.L., Robinson, P. and Stanley, R.S. 1983, Bedrock geological map of Massachusetts. U.S. Geological Survey, Washington D.C., scale 1:250,000
32 Spear, F.S. and Harrison, T.M., 1989, Geochronologic studies in central New England I: Evidence for pre-Acadian metamorphism in eastern Vermont. Geology, 17, 181-184   DOI