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EBSD and CL Study of Deformed Quartz Grains in Rocks: An Example for one Strain Fringe Structure From Iron Quadrangle

Published online by Cambridge University Press:  24 June 2019

P. F. Barbosa Open the ORCID record for P. F. Barbosa [Opens in a new window] ,
L. E. Lagoeiro  and
M. A. O. Silva
P. F. Barbosa*
Affiliation:
University of Brasília, Brasília, DF, Brazil
L. E. Lagoeiro
Affiliation:
Federal University of Paraná, Curitiba, PR, Brazil
M. A. O. Silva
Affiliation:
University of Brasília, Brasília, DF, Brazil
*
*Author for correspondence: P. F. Barbosa, E-mail: paolabarbosa@unb.br
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Abstract

Kinematic indicators, including certain strain fringes, represent an important group of structures related to the progressive deformation in rocks. The evolution of these fibrous textures can be explained by the combination of multiple mechanisms of deformation and fluid flow, mainly controlled by the orientation of the strain field and the morphology of the grains. In general, the observations are done with an optical microscope and compared with computational models of growth. This work proposes a combination of crystallographic and cathodoluminescence data obtained in rocks from banded iron formations of the Iron Quadrangle in Brazil to represent an example of how complementary analytical techniques can be useful to understand geological problems. The chosen sample exhibits a strain fringe structure of quartz around a clast of magnetite partially transformed into goethite and hematite. Through the crystallographic data it was possible to identify the grain boundary morphology and domains of low deformation areas. On the other hand, the cathodoluminescence signal evidenced the occurrence of grains with a higher concentration of crystalline defects.

Keywords

cathodoluminescencecomplementary techniqueselectron backscattering diffractiongrain growthrocks
Type
Materials Applications
Information
Microscopy and Microanalysis , Volume 25 , Issue 4 , August 2019 , pp. 883 - 890
Copyright
Copyright © Microscopy Society of America 2019 

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References

Aerden, DG & Sayab, M (2017). Probing the prodigious strain fringes from Lourdes. J Struct Geol 105, 88–106.Google Scholar
Alkmim, FF & Marshak, S (1998). Transamazonian orogeny in the Southern Sao Francisco craton region, Minas Gerais, Brazil: Evidence for Paleoproterozoic collision and collapse in the Quadrilátero Ferrıfero. Precambrian Res 90(1–2), 29–58.Google Scholar
Almeida, FFM, Amaral, G, Cordani, U & Kawashita, K (1973). The South Atlantic, In: Nairn, A.E.M., Stehli, F.G. (eds). Boston, MA: Springer. pp. 411–446.Google Scholar
Barbosa, PF & Lagoeiro, L (2012). Sheared-bedding parallel quartz vein as an indicator of deformation processes. Tectonophysics 564, 101–113.Google Scholar
Berton, JR, Durney, DW & Wheeler, J (2011). Diffusion-creep modelling of fibrous pressure shadows II: Influence of inclusion size and interface roughness. Geol Soc London, Special Pub 360(1), 319–328.Google Scholar
Bestmann, M, Prior, DJ & Veltkamp, KT (2004). Development of single-crystal σ-shaped quartz porphyroclasts by dissolution–precipitation creep in a calcite marble shear zone. J Struct Geol 26(5), 869–883.Google Scholar
Bons, PD (2000). The formation of veins and their microstructures. J Virtual Explorer 2, 12.Google Scholar
Choi, JH, Seo, YS & Chae, BG (2013). A study of the pressure solution and deformation of quartz crystals at high pH and under high stress. Nuclear Eng Technol 45(1), 53–60.Google Scholar
Choukroune, P, Gapais, D & Merle, O (1987). Shear criteria and structural symmetry. J Struct Geol 9(5–6), 525–530.Google Scholar
Daniel, CG, Hollister, LS, Parrish, RT & Grujic, D (2003). Exhumation of the Main Central Thrust from lower crustal depths, eastern Bhutan Himalaya. J Metamorph Geol 21(4), 317–334.Google Scholar
Dietrich, D & Grant, PR (1985). Cathodoluminescence petrography of syntectonic quartz fibres. J Struct Geol 7(5), 541–553.Google Scholar
Dorr, JVN (1969). Physiographic, Stratigraphic, and Structural Development of the Quadrilatero Ferrifero, Minas Gerais, Brazil (No. 641-A, pp. A1-A110). U.S.: US Government Printing Office.Google Scholar
Elliott, D (1972). Deformation paths in structural geology. Geol Soc Am Bull 83(9), 2621–2638.Google Scholar
Etchecopar, A & Malavieille, J (1987). Computer models of pressure shadows: A method for strain measurement and shear-sense determination. J Struct Geol 9(5–6), 667–677.Google Scholar
Fairbairn, HW (1950). Pressure shadows and relative movements in a shear zone. Eos Trans Am Geophys Union 31(6), 914–916.Google Scholar
Ghoussoub, J & Leroy, YM (2001). Solid–fluid phase transformation within grain boundaries during compaction by pressure solution. J Mech Phys Solids 49(10), 2385–2430.Google Scholar
Götze, J, Plötze, M & Habermann, D (2001). Origin, spectral characteristics and practical applications of the cathodoluminescence (CL) of quartz–a review. Mineral Petrol 71(3–4), 225–250.Google Scholar
Hamers, MF, Pennock, GM & Drury, MR (2017). Scanning electron microscope cathodoluminescence imaging of subgrain boundaries, twins and planar deformation features in quartz. Phys Chem Miner 44(4), 263–275.Google Scholar
Han, R, Wang, L, Ma, D, Gu, X & Fan, Z (2010). “Giant pressure shadow” structure and ore-finding method of tectonic stress field in the Tongchang Cu-Au polymetallic orefield, Shaanxi, China: II. Dynamics of tectonic ore-forming processes and prognosis of concealed ores. Chinese J Geochem 29(4), 455–463.Google Scholar
Herz, N (1978). Metamorphic rocks of the Quadrilátero Ferrífero, Minas Gerais, Brazil (No. 641-C).Google Scholar
Hoefs, J, Müller, G & Schuster, AK (1982). Polymetamorphic relations in iron ores from the Iron Quadrangle, Brazil: The correlation of oxygen isotope variations with deformation history. Contrib Mineral Petrol 79(3), 241–251.Google Scholar
Imon, R, Okudaira, T & Kanagawa, K (2004). Development of shape-and lattice-preferred orientations of amphibole grains during initial cataclastic deformation and subsequent deformation by dissolution–precipitation creep in amphibolites from the Ryoke metamorphic belt, SW Japan. J Struct Geol 26(5), 793–805.Google Scholar
Koehn, D, Bons, PD & Passchier, CW (2005). Development of antitaxial fringes during non-coaxial deformation: An experimental study. J Struct Geol 25, 263–275.Google Scholar
Lagoeiro, L & Barbosa, P (2010). Nucleation and growth of new grains in recrystallized quartz vein: An example from banded iron formation in Iron Quadrangle, Brazil. J Struct Geol 32(4), 595–604.Google Scholar
Lagoeiro, L, Barbosa, PF & Fueten, F (2011). Complex fringes around magnetite porphyroclasts: Growth and deformation history. Tectonophysics 510(1–2), 186–194.Google Scholar
Lagoeiro, L, Hippertt, J & Lana, C (2003). Deformation partitioning during folding and transposition of quartz layers. Tectonophysics 361(3–4), 171–186.Google Scholar
Launeau, P & Cruden, AR (1998). Magmatic fabric acquisition mechanisms in a syenite: Results of a combined anisotropy of magnetic susceptibility and image analysis study. J Geophys Res Solid Earth 103(B3), 5067–5089.Google Scholar
Launeau, P & Robin, PYF (2005). Determination of fabric and strain ellipsoids from measured sectional ellipses—implementation and applications. J Struct Geol 27(12), 2223–2233.Google Scholar
Mandal, N, Samanta, SK & Chakraborty, C (2001). Numerical modeling of heterogeneous flow fields around rigid objects with special reference to particle paths, strain shadows and foliation drag. Tectonophysics 330(3–4), 177–194.Google Scholar
Marshak, S & Alkmim, FF (1989). Proterozoic contraction/extension tectonics of the southern São Francisco region, Minas Gerais, Brazil. Tectonics 8(3), 555–571.Google Scholar
Masuda, T & Mizuno, N (1995). Deflection of pure shear viscous flow around a rigid spherical body. J Struct Geol 17(11), 1615–1620.Google Scholar
Mukherjee, S (2017). Review on symmetric structures in ductile shear zones. Int J Earth Sci 106(5), 1453–1468.Google Scholar
Müller, A, Herrington, R, Armstrong, R, Seltmann, R, Kirwin, DJ, Stenina, NG & Kronz, A (2010). Trace elements and cathodoluminescence of quartz in stockwork veins of Mongolian porphyry-style deposits. Miner Deposita 45(7), 707–727.Google Scholar
Ni, P, Pan, JY, Wang, GG, Chi, Z, Qin, H, Ding, JY & Chen, H (2017). A CO2-rich porphyry ore-forming fluid system constrained from a combined cathodoluminescence imaging and fluid inclusion studies of quartz veins from the Tongcun Mo deposit, South China. Ore Geol Rev 81, 856–870.Google Scholar
Noce, CM, Machado, N & Teixeira, W (1998). U-Pb geochronology of gneisses and granitoids in the Quadrilatero Ferrifero (Southern Sao Francisco craton, Brazil): Age constraints for Archean and paleoproterozoic magmatism and metamorphism. Revista Brasileira de Geociências 28(1), 95–102.Google Scholar
Pabst, A (1931). “Pressure-Shadows” and the measurement of the orientation of minerals in rocks. Am Mineral: J Earth Planet Mat 16(2), 55–55.Google Scholar
Passchier, CW & Williams, PR (1996). Conflicting shear sense indicators in shear zones; the problem of non-ideal sections. J Struct Geol 18(10), 1281–1284.Google Scholar
Pires, FRM (1995). Textural and mineralogical variations during metamosphism of the proterozoic itabira iron formation in the quadrilatero Ferrifero, minas gerais, Brazil. An Acad Bras Cienc 67(1), 77–106.Google Scholar
Qi, C, Zhao, YH & Kohlstedt, DL (2013). An experimental study of pressure shadows in partially molten rocks. Earth Planet Sci Lett 382, 77–84.Google Scholar
Ramsay, JG & Huber, MI (1987). The Techniques of Modern Structural Geology, vol. 2. New York: Academic Press.Google Scholar
Rosière, CA, Siemes, H, Quade, H, Brokmeier, HG & Jansen, EM (2001). Microstructures, textures and deformation mechanisms in hematite. J Struct Geol 23(9), 1429–1440.Google Scholar
Rusk, BG, Lowers, HA & Reed, MH (2008). Trace elements in hydrothermal quartz: Relationships to cathodoluminescent textures and insights into vein formation. Geology 36(7), 547–550.Google Scholar
Schneider, CA, Rasband, WS & Eliceiri, KW (2012). NIH image to ImageJ: 25 years of image analysis. Nat Methods 9(7), 671.Google Scholar
Shimamoto, T, Kanaori, Y & Asai, KI (1991). Cathodoluminescence observations on low-temperature mylonites: Potential for detection of solution-precipitation microstructures. J Struct Geol 13(8), 967–973.Google Scholar
Spear, FS & Wark, DA (2009). Cathodoluminescence imaging and titanium thermometry in metamorphic quartz. J Metamorph Geol 27(3), 187–205.Google Scholar
Spier, CA, de Oliveira, SMB & Rosiere, CA (2003). Geology and geochemistry of the Águas Claras and Pico Iron Mines, Quadrilátero Ferrífero, Minas Gerais, Brazil. Miner Deposita 38(6), 751–774.Google Scholar
Spry, A (1969). Metamorphic textures, Pergamon, Oxford, UK, 350 pp.Google Scholar
Stallard, A & Shelley, D (1995). Quartz c-axes parallel to stretching directions in very low-grade metamorphic rocks. Tectonophysics 249(1–2), 31–40.Google Scholar
Strömgård, KE (1973). Stress distribution during formation of boudinage and pressure shadows. Tectonophysics 16(3–4), 215–248.Google Scholar
Taboada, A, Ritz, JF & Malavieille, J (1990). Effect of ramp geometry on deformation in a ductile decollement level. J Struct Geol 12(3), 297–302.Google Scholar
Takagi, H & Ito, M (1988). The use of asymmetric pressure shadows in mylonites to determine the sense of shear. J Struct Geol 10(4), 347–360.Google Scholar
Tenczer, V, Stüwe, K & Barr, TD (2001). Pressure anomalies around cylindrical objects in simple shear. J Struct Geol 23(5), 777–788.Google Scholar
Urai, JL, Williams, PF & Van Roermund, HLM (1991). Kinematics of crystal growth in syntectonic fibrous veins. J Struct Geol 13(7), 823–836.Google Scholar
Vasyukova, OV, Goemann, K, Kamenetsky, VS, MacRae, CM & Wilson, NC (2013). Cathodoluminescence properties of quartz eyes from porphyry-type deposits: Implications for the origin of quartz. Am Mineral 98(1), 98–109.Google Scholar
Vial, DS, Duarte, BP, Fuzikawa, K & Vieira, MBH (2007). An epigenetic origin for the Passagem de Mariana gold deposit, Quadrilátero Ferrífero, Minas Gerais, Brazil. Ore Geol Rev 32(3–4), 596–613.Google Scholar
Watt, GR, Wright, P, Galloway, S & McLean, C (1997). Cathodoluminescence and trace element zoning in quartz phenocrysts and xenocrysts. Geochim Cosmochim Acta 61(20), 4337–4348.Google Scholar