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The elucidation of the mechanisms and kinematics of shear zone deformation, at both local and regional scales, is the subject of a great deal of interest to scientists in the hydrocarbon industry, in seismology, and in structural geology more generally. Ductile Shear Zones comprises a collection of five theoretical and twelve regional contributions to the subject from a number of leading researchers in the field, with particular emphasis on work carried out in the Indian subcontinent. Ductile Shear Zones will be invaluable to advances students and researchers involved in the kinematics of shear.
Contributors vii
Acknowledgments ix
Introduction x
Part I: Theoretical Advances and New Methods
1 From finite to incremental strain: Insights into heterogeneous shear zone evolution 3
Stefano Vitale and Stefano Mazzoli
2 How far does a ductile shear zone permit transpression? 14
Sujoy Dasgupta, Nibir Mandal, and Santanu Bose
3 2D model for development of steady-state and oblique foliations in simple shear and more general deformations 30
Kieran F. Mulchrone, Patrick A. Meere, and Dave J. McCarthy
4 Ductile deformation of single inclusions in simple shear with a finite-strain hyperelastoviscoplastic rheology 46
Christoph Eckart Schrank, Ali Karrech, David Alexandre Boutelier, and Klaus Regenauer-Lieb
5 Biviscous horizontal simple shear zones of concentric arcs (Taylor–Couette flow) with incompressible Newtonian rheology 59
Soumyajit Mukherjee and Rakesh Biswas
Part II: Examples from Regional Aspects
6 Quartz-strain-rate-metry (QSR), an efficient tool to quantify strain localization in the continental crust 65
Emmanuelle Boutonnet and Phillipe-Herve Leloup
7 Thermal structure of shear zones from Ti-in-quartz thermometry of mylonites: Methods and example from the basal shear zone, northern Scandinavian Caledonides 93
Andrea M. Wolfowicz, Matthew J. Kohn, and Clyde J. Northrup
8 Brittle-ductile shear zones along inversion-related frontal and oblique thrust ramps: Insights from the Central–Northern Apennines curved thrust system (Italy) 111
Paolo Pace, Fernando Calamita, and Enrico Tavarnelli
9 Microstructural variations in quartzofeldspathic mylonites and the problem of vorticity analysis using rotating porphyroclasts in the Phulad Shear Zone, Rajasthan, India 128
Sudipta Sengupta and Sadhana M. Chatterjee
10 Mineralogical, textural, and chemical reconstitution of granitic rock in ductile shear zones: A study from a part of the South Purulia Shear Zone, West Bengal, India 141
Nandini Chattopadhyay, Sayan Ray, Sanjoy Sanyal, and Pulak Sengupta
11 Reworking of a basement–cover interface during Terrane Boundary shearing: An example from the Khariar basin, Bastar craton, India 164
Subhadip Bhadra and Saibal Gupta
12 Intrafolial folds: Review and examples from the western Indian Higher Himalaya 182
Soumyajit Mukherjee, Jahnavi Narayan Punekar, Tanushree Mahadani, and Rupsa Mukherjee
13 Structure and Variscan evolution of Malpica–Lamego ductile shear zone (NW of Iberian Peninsula) 206
Jorge Pamplona, Benedito C. Rodrigues, Sergio Llana-Funez, Pedro Pimenta Simoes, Narciso Ferreira, Carlos Coke, Eurico Pereira, Paulo Castro, and Jose Rodrigues
14 Microstructural development in ductile deformed metapelitic–metapsamitic rocks: A case study from the greenschist to granulite facies megashear zone of the Pringles Metamorphic Complex, Argentina 224
Sergio Delpino, Marina Rueda, Ivana Urraza, and Bernhard Grasemann
15 Strike–slip ductile shear zones in Thailand 250
Pitsanupong Kanjanapayont
16 Geotectonic evolution of the Nihonkoku Mylonite Zone of north central Japan based on geology, geochemistry, and radiometric ages of the Nihonkoku Mylonites: Implications for Cretaceous to Paleogene tectonics of the Japanese Islands 270
Yutaka Takahashi
17 Flanking structures as shear sense indicators in the Higher Himalayan gneisses near Tato, West Siang District, Arunachal Pradesh, India 293
Tapos Kumar Goswami and Sukumar Baruah
Index 302
Soumyajit Mukherjee is a faculty member at the Indian Institute of Technology Bombay, India where he teaches structural geology and stratigraphy. He is an Associate Editor of the International Journal of Earth Sciences. He received the Hutchison Young Scientist Award from IUGS, and worked as a Guest Researcher at the Hans Ramberg Tectonic Lab, Uppsala University, Sweden.
Kieran F. Mulchrone is a Senior Lecturer in the Department of Applied Mathematics, School of Mathematical Sciences, University College, Cork where he runs the M.Sc. in Mathematical Modelling and Scientific Computing. His research delves into the interface between structural geology and applied mathematics. He is an Associate Editor of the Journal of Structural Geology.
