Дискуссионный Петрофизический Форум

The role of tectonic shear strain on the illitization mechanism of mixed-layers illite–smectite. A case study from a fault zone in the Northern Apennines, Italy
International Journal of Earth Sciences
Springer Berlin / Heidelberg
ISSN 1437-3254 (Print) 1437-3262 (Online)
Volume 97, Number 3 / Май 2008 г.
DOI 10.1007/s00531-007-0180-4
pp. 601-616
Original Paper
The role of tectonic shear strain on the illitization mechanism of mixed-layers illite–smectite. A case study from a fault zone in the Northern Apennines, Italy
F. Dellisanti1 , G. A. Pini1, F. Tateo2 and F. Baudin3

(1) Dipartimento di Scienze della Terra e Geo-Ambientali, Università di Bologna, Bologna, Italy
(2) Istituto di Geoscienze e Georisorse, CNR, Padova, Italy
(3) Département de Géologie Sédimentaire, UPMC et CNRS Paris VI, Paris, France

Received: 10 August 2005 Accepted: 10 January 2007 Published online: 21 March 2007

Abstract The influence of tectonic strain on the diagenetic degree and illitization process of mixed-layers illite–smectite at shallow crustal conditions was studied. For this purpose, the modal composition of clay fraction and illite FWHM parameters of argillites deformed by a regional-scale fault zone were studied in detail by XRD, chemical analyses and by SEM observations. Analyses were performed on deformed samples of the fault rock and compared with the non-deformed rocks off the fault zone. In addition, this paper reports a detailed comparative analysis of deformed (shear surfaces and cleavage domains) and non-deformed domains (lithon cores) of a scaly fabric in the fault rock. A systematic increase in illite concentration, a decrease of Kübler index and FWHM(002) values, and an enrichment of K+ ions were observed in cleavage domains with respect to the non-deformed sediments off the fault zone and the lithon cores within the fault rock. Migration of K+-rich fluids along scaly cleavage domains causes progressive conversion of smectite-rich I–S to illite-rich I–S and thickening of illite crystallites along the c-direction. Changes in mineralogical and crystallographic parameters, therefore, seem to be strongly controlled by shear plane development in highly sheared rocks.
Keywords Diagenetic zone - Fluid migration - Illitization - Scaly fabric - Tectonic shear strain
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F. Dellisanti
Email: franz@geomin.unibo.it

References
Abad I, Guitierrez-Alonso G, Nieto F, Gertner I, Becker A, Cabro A (2003) The structure and the phyllosilicates (chemistry, crystallinity and texture) of Talas Ala-Tau (Tien Shan, Kyrgyz Republic): comparison with more recent subduction complexes. Tectonophysics 365:103–127

Árkai P, Balogh K, Frey M (1997) The effects of tectonic shear strain on crystallinity, apparent mean crystallite size and lattice strain of phyllosilicates in low-temperature metamorphic rocks. A case of study from the Glarus overthrust, Switzerland Schweiz Mineral Petrogr Mitt 77:27–40

Árkai P, Sassi FP, Desmons J (2002a) Very low to low-grade metamorphic rocks—a proposal on behalf of the IUGS Subcommission on the Systematic of Metamorphic Rocks. Web version of 31.10.2002

Árkai P, Mahlmann RF, Suchy V, Balogh K, Sykorova I, Frey M (2002b) Possible effects of tectonic shear strain on phyllosilicates: a case study from the Kandersteg area, Helvetic domain, Central Alps, Switzerland. Schweiz Mineral Petrogr Mitt 82:273–290

Bartlett WL, Friedman M, Logan JM (1981) Experimental folding and faulting of rocks under confining pressure. Part IX, Wrench faults in limestone layers, Tectonophysics 79:255–277

Battaglia S, Leoni L, Sartori F (2004) The Kübler index in late diagenetic to low-grade metamorphic pelites: a critical comparison of data from 10 Å and 5 Å peaks. Clay Clay Min 52:85–105

Bennet RH, Bryant WR, Keller GH (1981) Clay fabric of selected submarine sediments: fundamental properties and models. J Sed Petrol 51:217–232

Bennet RH, Bryant WR, Hulbert MH (1991) Determinants of Clay and shale microfabric signatures: processes and mechanisms. In Bennet RH, Bryant WR, Hulbert MH (eds) Microstructure of fine-grained sediments. From mud to shale. Springer, Berlin, pp 5–32

Berthé D, Choukroune P, Jegouzo P (1979) Orthogneiss, mylonites and non-coaxial deformation in granites: the example of the South-Armorican Shear Zone. J Struct Geol 1:31–42

Biscaye PE (1965) Mineralogy and sedimentation of recent deep-sea clay in the Atlantic ocean and adjacent seas and oceans. Geol Soc Am Bull 76:803–832
<Occurrence Type="DOI"><Handle>10.1130/0016-7606(1965)76[803:MASORD]2.0.CO;2</Handle></Occurrence>

Boccaletti M, Guazzone G (1972) Gli archi appenninici, il Mar Ligure ed il Tirreno nel quadro dei bacini di retroarco. Mem Soc Geol Ital 11:201–216

Boles JR, Franks SG (1979) Clay diagenesis in Wilcox Sandstones of Southwest Texas: implications of smectite diagenesis on sandstone cementation. J Sed Petrol 49:55–70

Borradaile GJ, Bayly MB, Powell CM (1982) Atlas of deformational and metamorphic rock fabrics. Springer, Berlin, pp 1–564

Bortolotti V (1966) La tettonica trasversale dell’Appennino; 1, La linea Livorno-Sillaro. Bull Soc Geol Ital 85:529–540

Botti F, Aldega L, Corrado S (2004) Sedimentary and tectonic burial evoluton of the Northern Apennines in the Modena–Bologna area: constraints from combined stratigraphic, structural, organic matter and clay mineral data of Neogene thrust-top basins. Geodin Acta 17:185–203

Burkhard M, Badertscher N (2001) Finite strain has no influence on the illite crystallinity of tectonized Eocene limestone breccias of the Morcles nappe, Swiss Alps. Clay Min 36:171–180

Capozzi R, Landuzzi A, Negri A, Vai G.B (1991) Stili deformativi ed evoluzione tettonica della successione Neogenica Romagnola. Studi Geologici Camerti Special volume 1:261–278

Carosi R, Leoni L, Montomoli C, Sartori F (2003) Very low-grade metamorphism in the Tuscan Nappe, Northern Apennines, Italy: relationship between deformation and metamorphic indicators in the La Spezia mega-fold. Schweiz Mineral Petrogr Mitt 83:15–32

Casas JM, Sabat F (1987) An example of three-dimensional analysis of thrust-related tectonites. J Struct Geol 9:644–657

Casciello E, Cesarano M, Cosgrove JW (2004) Shear deformation of pelitic rocks in a large-scale natural fault. In: Alsop GI, Holdsworth RE, McCaffrey KJW, Hand M (eds) Flow processes in faults and shear zones. Geol Soc London Spec Publ 224:113–125

Castellarin A, Pini GA (1989) L’arco del Sillaro: la messa in posto delle Argille Scagliose al margine appenninico padano (Appennino bolognese). Mem Soc Geol Ital 39:127–142

Castellarin A, Eva C, Giglia G, Vai GB, Rabbi E, Pini GA, Crestana G, Borsetti AM (1985) Analisi strutturale del Fronte Appenninico Padano. Giorn Geol 47:47–75

Cerrina Feroni A, Leoni L, Martelli L, Martinelli P, Ottria G, Sarti G (2001) The Romagna Apennines, Italy: an ordered duplex. Geol J 36:39–54

Cerrina Feroni A, Ottria G, Martinelli P, Martelli L, Catanzariti R (2002) Structural- Geological Map of the Emilia-Romagna Apennines, 1:250000 scale. S.E.L.C.A., Firenze

Cowan DS, Brandon MT (1994) A symmetry-based method for kinematics analysis of large-slip brittle fault zones. Am J Sci 294:257–306

De Jager J (1979) The relation between tectonics and sedimentation along “Sillaro line”, Geologica Ultraiectina 19:1–93

Dellisanti F (2004) Relazioni tra deformazioni di taglio e caratteri minero-petrografici di peliti nell’Appennino Settentrionale. Ph.D Thesis, Bologna University, pp 1–104

Dong H, Peacor DR, Freed RL (1997) Phase relations among smectite, R1 illite-smectite, and illite. Am Miner 82:379–391

Espitalie J (1986) Use of T max as a maturity index for different types of organic matter: comparison with reflectance. In: Burrus J (eds) Thermal modelling in sedimentary basins. Technip, Paris, pp 475–496

Espitalie J, La Porte JL, Madec M, Marquis F, Le Plat P, Paulet J, Boutefeu (1977) Méthode rapide de caractérisation des roches mères de leur potentiel pétrolier et de leur degré d’évolution. Revue de l’Institut Français du Pétrole 32:23–42

Etheridge MA, Paterson MS, Hobbs BE (1974) Experimentally-produced preferred orientation in synthetic mica aggregates. Contrib Mineral Petrol 44:275–294

Fazzini P, Gelmini R (1984) Tettonica trasversale nell’Appennino Settentrionale. Mem Soc Geol Ital 24:299–312

Frey M (1987) Very low-grade metamorphism of clastic sedimentary rocks. In Frey M (ed) Low-temperature metamorphism. Blackie, Glasgow, pp 9–58

Ghelardoni R (1965) Osservazioni sulla tettonica trasversale nell’Appennino Settentrionale. Bull Soc Geol Ital 84:277–290

Giorgetti G, Memmi I, Peacor DR (2000) Retarded illite crystallinity caused by stress-induced sub-grain boundaries in illite. Clay Min 35:693–708

Groshong RH (1988) Low-temperature deformation mechanism and their interpretation. Geol Soc Am Bull 100:1329–1360

Guggenheim S, Bain DC, Bergaya F, Brigatti MF, Drits VA, Eberl DD, Formoso MLL, Galan E, Merriman RJ, Peacor DR, Stanjek H, Watanabe T (2002) Order, disorder and crystallinity in phyllosilicates and the use of the “Crystallinity Index”. Report of the association Internationale pour l’Etude des Argiles (AIPEA) Clay Min 37:389–393

Hancock PL (1985) Brittle microtectonics; principles and practice. J Struct Geol 7:437–457

Ho N-C, Peacor DR, van der Pluijm BA (1999) Preferred orientation of phyllosilicates in Gulf Coast mudstones and relation to the smectite–illite transition. Clay Clay Min 47:495–504

Hower J, Eslinger E, Hower ME, Perry EA (1976) Mechanism of burial and metamorphism of argillaceous sediment: 1. mineralogical and chemical evidence Geol Soc Am Bull 87:725–737

Hunt JM (1995) Petroleum geochemistry and geology, 2nd edn. Freeman, New York, pp 1–743

Jaboyedoff M, Thelin P (1996) New data on low-grade metamorphism in the Briançonaise domain of the Prealps, Western Switzerland. Eur J Miner 8:577–592

Kisch HJ (1991) Illite crystallinity: recommendations on sample preparation, X-ray diffraction settings, and interlaboratory samples. J Metamorph Geol 9:665–670

Krumm S (1996) WINFIT 1.0—a computer program for X-ray diffraction line profile analysis. Acta Universitatis Carolinae Geologica 38:253–261

Knipe RJ (1979) Chemical changes during slaty cleavage development. Bull Minér 102:206–209

Knipe RJ (1981) The interaction of deformation and metamorphism in slates. Tectonophysics 78:249–272

Koopman A (1983) Detachment tectonics in the Central Apennines, Italy. Geologica Ultraiectina 30:1–155

Kübler B (1967) La cristallinité de l’illite et les zones tout à fait supérieures du métamorphisme. In: Etages Tectoniques, Colloque de Neuchâtel 1966, Université Neuchâtel, à la Baconnière, Neuchâtel Switzerland, pp 105–121

Kübler B (1990) Minerali argillosi, dal deposito al metamorfismo. Le associazioni mineralogiche dei sedimenti fini dalla diagenesi al metamorfismo Miner Petrogr Acta 33:15–27

Lezzerini M, Sartori F, Tamponi M (1995) Effect of amount of material used on sedimentation slides in the control of illite “crystallinity” measurements. Eur J Miner 7:819–823

Lister G, Snoke A (1984) S–C mylonites. J Struct Geol 6:617–638

Logan JM, Dengo CA, Higgs NG, Wang ZZ (1992) Fabrics of experimental fault zone: their development and relationship behaviour. In: Evans B, Wong T (eds) Fault mechanics and transport properties of rocks. Academic, London, pp 33–67

Lucente CC, Manzi V, Ricci Lucchi F, Roveri M (2002) Did the Ligurian sheet cover the whole Romagna Apennines? Boll Soc Geol Ital Spec vol 1:385–392

Marabini S, Vai G.B (1985) Analisi di facies e macrotettonica della Vena del Gesso in Romagna. Boll Soc Geol Ital 104:21–42

Maxwell J.C (1962) Origin of slaty and fracture cleavage in the Delaware Water Gap area, New Jersey and Pensylvania. In: Petrologic studies, a volume in honor of A. F. Buddington. Geol Soc Am, New York, pp 282–311

McCaig AM, Knipe RJ (1990) Mass-transport mechanism in deforming rocks: recognition using microstructural and microchemical criteria. Geology 18:824–827

Merriman RJ (2005) Clay minerals and sedimentary basin history. Eur J Miner 17:7–20

Merriman RJ, Frey M (1999) Patterns of very low-grade metamorphism in metapelitic rocks. In: Frey M, Robinson D (eds) Low-grade metamorphism. Blackwell, Glasgow, pp 61–107

Merriman RJ, Peacor DR (1999) Very low-grade metapelites: mineralogy, microfabrics and measuring reaction progress. In: Frey M, Robinson D (eds) Low-grade metamorphism. Blackwell, Glasgow, pp 10–60

Merriman RJ, Roberts B, Peacor DR (1990) A transmission electron microscope study of white mica crystallite size distribution in a mudstone to slate transitional sequence, North Wales, U.K. Contrib Miner Petrol 106:27–40

Merriman RJ, Roberts B, Peacor DR, Hirons SR (1995) Stain-related differences in the crystal growth of white mica and chlorite: a TEM and XRD study of the development of metapelitic microfabrics in the Southern Uplands thrust terrain, Scotland. J Metamorph Geol 13:559–576

Moore DM , Reynolds RC (1989) X-ray diffraction and the identification and analysis of clay minerals. Oxford University Press, Oxford, pp 1–327

Moore JC, Roeske S, Lundberg N, Schoonmaker J, Cowan DS, Gonzales E, Lucas S.E (1986) Scaly fabrics from Deep Sea Drilling Project cores from forearcs. In: Moore JC (ed) Structural fabric in Deep Sea Drilling Project cores from forearcs. Geol Soc Am Mem 166: 55–73

Naylor MA, Mandl G, Sijpestein CHK (1986) Fault geometries in basement-induced wrench faulting under differential initial stress state. J Struct Geol 7:737–752

Nieto F, Sanchez-Navas A (1994) A comparative XRD and TEM study of the physical meaning of the white mica “crystallinity” index. Eur J Miner 6:611–621

Norris DK, Barron K (1969) Structural analysis of features on natural and artificial faults. In: Research in tectonics. Paper of Geological Survey of Canada, Ottawa, pp 136–167

Offler R, Prendergast E (1985) Significance of illite crystallinity and b0 values of K-white mica in low-grade metamorphic rocks, North Hill End Synclinorium, New South Wales. Aust Miner Mag 49:357–364

Ori GG, Friend PF (1984) Sedimentary basins formed and carried piggyback on active thrust sheets. Geology 12:475–478

Petit JP (1987) Criteria for the sense of movement on fault surfaces in brittle rocks. J Struct Geol 9:597–608

Passchier CW, Trouw RAJ (2005) Microtectonics. Springer, Berlin, pp 1–366

Pini GA (1987) Studio geologico e analisi strutturale delle “Argille Scagliose” del pede-Appennino Bolognese. PhD Thesis, Bologna University and Modena University Consortium, pp 1–247

Pini GA (1992) Fault rock analysis as a key for the kinematic reconstruction in brittle tectonics: an example from Southern Alps. Boll Soc Geol Ital 110:779–803

Pini GA (1993) Geological map of the Bologna area foothills, scale 1:50000. CTF, Grafiche STEP, Parma

Pini GA (1999) Tectonosomes and olistostromes in the argille scagliose of the Northern Apennines, Italy. Geol Soc Am Spec Paper 335:1–70

Pollastro RM (1985) Mineralogical and morphological evidence for the formation of illite at the expense of illite/smectite. Clay Clay Min 33:265–274

Powell CM (1979) A morphological classification of rocks cleavage. In: Bell TH, Vernon RH (eds) Microstructural processes during deformation and metamorphism. Tectonophysics 58:21–34

Powell CMcA (1969) Intrusive sandstone dykes in the Siamo Slate near Negaunee, Michigan. Geol Soc Am Bull 80:2585–2594
<Occurrence Type="DOI"><Handle>10.1130/0016-7606(1969)80[2585:ISDITS]2.0.CO;2</Handle></Occurrence>

Powell CMcA (1972) Tectonic dewatering and strain in the Michigamme Salte, Michigan. Geol Soc Am Bull 83:2149–2178
<Occurrence Type="DOI"><Handle>10.1130/0016-7606(1972)83[2149:TDASIT]2.0.CO;2</Handle></Occurrence>

Reynolds RC (1985) NEWMOD™, a computer program for the calculation of one-dimensional diffraction patterns of mixed-layer clays

Ricci Lucchi F (1986) The oligocene to recent foreland basins of the northern Apennines. Spec Publ Int Ass Sediment 8:105–139

Roberts B, Merriman RJ (1985) The distinction between Caledonian burial and regional metamorphism in metapelites from North Wales: an analysis of isocryst patterns. J Geol Soc Lond 142:615–624

Roberts B, Merriman RJ, Pratt W (1991) The influence of strain, lithology and stratigraphical depth on white mica (illite) crystallinity in mudrocks from the vicinity of the Corris Slate Belt, Wales: implications for the timing of metamorphism in the welsh Basin. Geol Mag 128:633–645

Rutter EH, Maddock RH, Hall SH, White SH (1986) Comparative microstructures of natural and experimental produced clay-bearing gouges. Pure Appl Geophys 124:3–29

Skempton AW (1966) Some observation of tectonic shear zones. In: Proceedings of the 1st Congress International Society of Rock Mechanics, Lisbon 1:329–335

Schlunegger F, Willett SD (1999) Spatial and temporal variations in exhumation of the central Swiss Alps and implication fro exhumation mechanisms. In: Ring U, Brandon MT, Willett SD, Lister GS (eds) Exhumation processes: normal faulting, ductile flow and erosion. Geol Soc London Spec Publ 154:157–179

Stephens MB, Glasson MJ, Keays RR (1979) Structural and chemical aspects of metamorphic layering development in metasediments from Clunes, Australia. Am J Sci 279:129–160

Stern WB, Mullis J, Rahn M, Frey M (1991) Deconvolution of the first “illite” basal reflection. Schweiz Mineral Petrogr Mitt 71:453–462

Tchalencko JS (1968) The evolution of kink-bands and the development of compression textures in sheared clay. Tectonophysics 6:159–174

Tchalencko JS (1970) Similarities between shear zones of different magnitudes. Geol Soc Am Bull 81:1625–1640
<Occurrence Type="DOI"><Handle>10.1130/0016-7606(1970)81[1625:SBSZOD]2.0.CO;2</Handle></Occurrence>

Teichmuller M, Teichmuller R, Weber K (1979) Inkohlung und Illit-Kristallinitat-Vergleichende Untersuchungen im Mesoikum und Palaozoikum von Westfalen. Forts Geol Rheinland Westafalen 27:201–276

Tjia HD (1971) Fault movement, reoriented stress field and subsidiary structures. Pac Geol 5:49–70

Vannucchi P (1998) Deformazione di sedimenti non litificati in zone di convergenza: esempi dell’Appennino Settentrionale e dalla Costa Rica. PhD Thesis, Bologna University and Modena University Consortium, pp 1–198

Vannucchi P, Maltman A, Bettelli G, Clennel B (2003) On the nature of scaly fabric and scaly clays. J Struct Geol 25:673–688

Ventura B, Pini GA, Zuffa GG (2001) Thermal history and exhumation of the Northern Apennines (Italy): evidence from combined apatite fission track and vitrinite reflectance data from foreland basin sediments. Basin Res 13:435–448

Warr LN (1996) Standardized clay mineral crystallinity data from the very low-grade metamorphic facies rocks of southern New Zealand. Eur J Miner 8:115–127

Warr LN, Rice HN (1994) Interlaboratory standardization and calibration of clay mineral crystallinity and crystallite size data. J Metamorph Geol 12:141–152

Warr LN, Greiling RO, Zachrisson E (1996) Thrust-related very low grade metamorphism in the marginal part of an orogenic wedge, Scandinavian Caledonides. Tectonics 15:1213–1229

White SM, Johnston DC, (1981) A microstructural and microchemical study of cleavage lamellae in a slate. J Struct Geol 3:279–290

Yan Y, van der Pluijm BA, Peacor DR (2001) Deformation microfabrics of clay gouge, Lewis Thrust, Canada: a case for fault weakening from clay transformation. In: Holdsworth RE, Stachan RA, Magloughlin JF, Knipe RJ (eds) Nature, tectonic significance of fault zone weakening. Geol Soc London Spec Publ 186:103–112

Yoder HS, Eugster HP (1955) Synthetic and natural muscovites. Geochim Cosmochim Acta 8:225–280

Zattin M, Picotti V, Zuffa GG (2002) Fission-track reconstruction of the front of the northern Apennine thrust wedge and overlying Ligurian unit. Am J Sci 302:346–379

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