Emplacement mechanism of the main granite pluton of the Lavras do Sul intrusive complex, South Brazil, determined by magnetic anisotropies

Tectonophysics

Volumn 466, Issue 1-2, 2009, Pages 18-31

  Raposo, M Irene B ^a   Gastal, M Carmo P ^b  

^a UNIVERSITY OF SÃO PAULO   (Brazil)

^b FEDERAL UNIVERSITY OF RIO GRANDE DO SUL   (Brazil)

Author keywords

AARM; AMS; Granites; Intrusive complex of Lavras do Sul; Magnetic fabric; Rock magnetism

Indexed keywords

AARM; AMS; GRANITES; INTRUSIVE COMPLEX OF LAVRAS DO SUL; MAGNETIC FABRIC; ROCK MAGNETISM;

ALPHA PARTICLE SPECTROMETERS; ANISOTROPY; ASSET MANAGEMENT; DEFORMATION; FABRICS; GRANITE; IRON ORES; MAGNETIC ANISOTROPY; MAGNETIC MATERIALS; MAGNETIC PROPERTIES; MAGNETIC SUSCEPTIBILITY; MAGNETITE; MINERALS; OXIDE MINERALS; PARTICLE SPECTROMETERS; ROCKS; STRUCTURAL GEOLOGY;

MAGNETISM;

EMPLACEMENT; GEOMAGNETISM; GRANITE; MAGNETIC ANISOTROPY; MAGNETIC FABRIC; MAGNETIC SUSCEPTIBILITY; PLUTON; REMANENT MAGNETIZATION;

BRAZIL; RIO GRANDE DO SUL; SOUTH AMERICA;

EID: 59749097959     PISSN: 00401951     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tecto.2008.10.015     Document Type: Article

References (36)

1. Archanjo C.J., Macedo J.W.P., Galindo A.C., and Araújo M.G.S. Brasiliano crustal extension and emplacement fabrics of the mangerite-charnockite pluton of Umarizal, North-east Brazil. Precambrian Research 87 (1998) 19-32
2. 39Ar K-feldspar dating of syn-sedimentary volcanism of the Neoproterozoic Maricá Formation: constraining the age of foreland basin inception and inversion in the Camaquã Basin of southern Brazil. Basin Research 20 (2008) 359-375 10.1111/j.1365-2117.2007.00349.x
3. Borradaile G.J., and Henry B. Tectonic applications of magnetic susceptibility and its anisotropy. Earth Science Review 42 (1997) 49-93
4. Bouchez J.L. Granite is never isotropic: an introduction to AMS studies of granitic rocks. In: Bouchez J.L., Hutton D.H.W., and Stephens W.E. (Eds). Granite: from segregation of melt to emplacement fabrics (1997), Kluwer Academic Publishers 95-112
5. Cañon-Tapia E. Single-grain versus distribution: a simple three-dimensional model. Physics of the Earth and Planetary Interiors 94 (1996) 149-158
6. Cañon-Tapia E. Factors affecting the relative importance of shape and distribution anisotropy in rocks: theory and experiments. Tectonophysics 340 (2001) 117-131
7. Constable C., and Tauxe L. The bootstrap for magnetic susceptibility tensor. Journal of Geophysical Research 95 (1990) 8383-8395
8. Esmaeily D., Bouchez J.L., and Siqueira R. Magnetic fabrics and microstructures of the Jurassic Shah-Kuh granite pluton (Lut Block, Eastern Iran) and geodynamic inference. Tectonophysics 439 (2007) 149-170
9. Fernandes L.A.D., Menegat R., Costa A.F.U., Koester E., Porcher C.C., Tommai A., Kraemer G., Ramgrab G.E., and Camozzato E. Evolução tectônica do Cinturão Dom Feliciano no escudo Sul-Rio-Grandense: Parte I - uma contribuição a partir do registro geológico. Revista Brasileira de Geociências 25 (1995) 351-374
10. Gaillot P., Saint-Blanquat M., and Bouchez J.L. Effects on magnetic interations in anisotropy of magnetic susceptibility: models, experiments and implications for igneous rock fabrics quantification. Tectonophysics 418 (2006) 3-19
11. Gastal M.C.P., and Lafon J.M. Gênese e evolução dos granitóides metaluminosos de afinidade alcalina da porção oeste do Escudo Sul-Riograndense: geoquímica e isótopos Rb-Sr e Pb-Pb. Revista Brasileira de Geociências 28 (1998) 11-28
12. Gastal M.C.P., and Lafon J.M. Reinterpretação do Complexo Intrusivo Lavras do Sul, RS, de acordo com os sistemas vulcano-plutônicos de subsidência. Parte II: química mineral, geoquímica e isótopos de Pb-Sr-Nd. Revista Brasileira de Geociências 36 (2006) 125-146
13. 238U). Revista Brasileira de Geociências 36 (2006) 1109-1124
14. Gastal M.C.P., Fernades G.A., Ferreira F.J.F., and Frizzo R.G. Zonalidade reversa dos granitos do Complexo Intrusivo Lavras do Sul, RS: suscetibilidade magnética e óxidos de Fe-Ti. Revista Brasileira de Geociências 36 (2006) 91-108
15. Hargraves R.B., Johnson D., and Chan C.Y. Distribution anisotropy: the cause of AMS in igneous rocks?. Geophysical Research Letters 18 (1991) 2193-2196
16. Hartmann L.A., Leite J.A.D., da Silva L.C., Remus M.V.D., McNaughton N.J., Groves D.I., Fletcher I.R., Santos J.O.S., and Vasconcellos M.A.Z. Advances in SHRIMP geochronology and their impact on understanding the tectonic and metallogenic evolution of southern Brazil. Australian Journal of Earth Science 47 (2000) 829-844
17. Jackson M. Anisotropy of magnetic remanence: a brief review of mineralogical sources, physical origins and geological applications, and comparison with susceptibility anisotropy. Pure and Applied Geophysics 136 (1991) 1-28
18. Jackson M., Sprowl D., and Ellwood B.B. Anisotropy of partial anhysteretic remanence and susceptibility in compact black shales: grain-size and composition-dependent magnetic fabric. Geophysical Research Letters 16 (1989) 1063-1066
19. Jelinek V. Characterization of the magnetic fabric of rocks. Tectonophysics 79 (1981) T63-T67
20. Johnson S.E., Schimidt K.L., and Tate M.C. Ring complexes in the Peninsular Ranges Batholith, Mexico and USA: magma pluming systems in the middle and upper crust. Lithos 61 (2002) 187-208
21. Leitão A.C., de F., Janikian L., de Almeida R.P., Fragoso-Cesar A.R.S., and Figueiredo F.T. Proviniência de arenitos da Formação Cerro da Angélica (Grupo Bom Jardim, Ediacarano do RS) na porção sul da sub-bacia Camaquã central e suas implicações tectônicas. Revista Brasileira de Geociências 37 (2007) 677-692
22. Leite J.A.D., Hartmann L.A., McNaughton N.J., and Chemale Jr. F. SHRIMP U/Pb zircon geochronology of Neoproterozoic juvenile and crustal-reworked terranes in southernmost Brazil. International Geological Review 40 (1998) 683-705
23. McNulty B.A., Tobisch O.T., and Cruden A.R. Multistage emplacement of the Mount Givens pluton, central Sierra Nevada batholith, California. GSA Bulletin 112 (2000) 119-135
24. Nardi, L.V.S., 1984. Geochemistry and Petrology of the Lavras Granite Complex, RS, Brazil. Doctor of Phylosophy Thesis, Department of Geology King's College, University of London, 268p.
25. Paterson S.R., Vernon R.H., and Tobish O.T. A review of criteria for identification of magmatic and tectonic foliation in granitoids. Journal of Structural Geology 11 (1989) 349-363
26. Paterson S.R., Flwler Jr. T.K., Schmidt K.L., Yoshinobu A.S., Yuan E.S., and Miller R.B. Interpreting magmatic fabric patterns in plutons. Lithos 44 (1998) 53-82
27. Raposo M.I.B., and Egydio-Silva M. Magnetic fabric studies of high-grade metamorphic rocks from the Juiz de Fora Complex, Ribeira Belt, Southeastern Brazil. International Geology Review 43 (2001) 441-456
28. Raposo M.I.B., Chaves A.O., Lojkasek-Lima P., D'Agrella-Filho M.S., and Teixeira W. Magnetic fabrics and rock magnetism of Proterozoic dike swarm from the southern São Francisco Craton, Minas Gerais State, Brazil. Tectonophysics 378 (2004) 43-63
29. Raposo M.I.B., McReath I., and D'Agrella-Filho M.S. Magnetic fabrics, rock magnetism, cathodoluminescence and petrography of apparently undeformed Bambuí carbonates from São Francisco basin (Minas Gerais State, SE Brazil): an integrated study. Tectonophysics 418 (2006) 111-130
30. Raposo M.I.B., D'Agrella-Filho M.S., and Pinese J.P.P. Magnetic fabrics and rock magnetism of Archaean and Proterozoic dike swarms in the Southern São Francisco craton, Brazil. Tectonophysics 443 (2007) 53-71
31. Saalmann K., Hartmann L.A., and Remus M.V.D. The assembly of West Gondwana - the view from the Rio de la Plata Craton. In: Linnemann U., Namce D., Kraft P., and Zulauf G. (Eds). The evolution of the Rheic Ocean: From Avalonian-Cadomian active margin to Alleghenian-Variscan Collision. Special Paper vol. 423 (2007), Geological Society of America 1-29
32. Stephenson A., Sadikum S., and Potter D.K. A theoretical and experimental comparison of the anisotropies of magnetic susceptibility and remanence in rocks and minerals. Geophysical Journal of the Royal Astronomical Society 84 (1986) 185-200
33. Talbot J.Y., Chen Y., and Faure M. A magnetic fabric study of the Aigoual-Saint Guiral-Liron granite pluton (French Massif Central) and relationships with its associated dikes. Journal of Geophysical Research 110 (2005) B12106 doi:10.1029/2005JB003699
34. Tarling D.H., and Hrouda F. The magnetic anisotropy of Rocks (1993), Chapman and Hall, London 217 pp.
35. Titus S.J., Clark R., and Tikoff B. Geologic and geophysical investigation of two fine-grained granites, Sierra Nevada Batolith, California: evidence for structural controls on emplacement and volcanism. GSA Bulletin 117 (2005) 1256-1271
36. Trindade R.I.F., Raposo M.I.B., Ernesto M., and Siqueira R. Magnetic suceptibility and partial anhysteretic remanence anisotropies in the magnetite-bearing granite pluton of Tourão, NE Brazil. Tectonophysics 314 (1999) 443-468