Giridas Maiti- PhD, Jadavpur University
- Research Associate at Karlsruhe Institute of Technology
Giridas Maiti
- PhD, Jadavpur University
- Research Associate at Karlsruhe Institute of Technology
Postdoc at Karlsruhe Institute of Technology (KIT), Germany
About
18
Publications
5,445
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
59
Citations
Introduction
Tectonics and Geodynamics Researcher. Working on modelling three-dimensional (3D) slab and crustal deformation pattern in convergent tectonics zones ( Mainly Himalaya-Tibet and Alps), employing fluid mechanics approach. I use analytical, numerical (FDM,FEM code), and laboratory scaled physical models to investigate various geological processes.
Current institution
Additional affiliations
July 2017 - May 2021
July 2015 - July 2017
Education
July 2013 - July 2015
July 2010 - July 2013
Publications
Publications (18)
Dehydration melting in subduction zones often produces cold plumes, initiated by Rayleigh‐Taylor instabilities in the buoyant partially molten zones lying above the dipping subducting slabs. We use scaled laboratory experiments to demonstrate how the slab dip (α) can control the evolution of such plumes. For α > 0°, Rayleigh‐Taylor instabilities ev...
Low-viscosity channel flow, originating from a melt-weakened mid-crustal layer, is one of the most popular tectonic models to explain the exhumation of deep-seated rocks in the Greater Himalayan Sequence (GHS). The driving mechanism of such channel flow, generally attributed to focused erosion in the mountain front, is still debated, and yet to be...
The factors controlling the spatiotemporally varying deformation patterns in Tibet, a
prolonged period (∼50 to 19 ± 3 Ma) of NNE-SSW shortening, accompanied by eastward flow and orogenparallel extension in a later stage (19 ± 3 Ma to present-day), are still poorly constrained. Using viscous models, we performed scaled laboratory experiments with st...
The horizontal propagation of slab detachment (slab tearing) is known to control lateral migration of the mountain uplift along the collisional belt. However, along‐strike differential collision due to an oblique passive margin geometry can make the topography response more complex. In this study, we employ 3D thermomechanical modeling to distingui...
The tectonic history of the Himalaya-Tibet Mountain Range records two important extensional tectonic events: 1) N-S extension in the Himalaya-Tibet transition zone, and 2) E-W extension in the southern and central Tibet, manifested in the form of east-west and north-south striking normal faults, respectively. The N-S extensional event (~22 Ma) star...
The Andean subduction system records a spectacular variation of the plume-driven arc volcano pattern in space and time. This article presents an experimental study of the volcano distributions in two specific regions: Puna and Payenia, where the volcanoes did not undergo later modifications due to any secondary structural processes, and they have p...
The India-Asia continental collision, starting at ~50 Ma, has resulted in about 2000 km crustal shortening to build the Himalaya-Tibetan plateau, which is one of the landmark terrestrial features on the Earth. In this study, using a thin viscous sheet approximation we performed scaled laboratory model experiments to investigate the spatiotemporal v...
We show slab-parallel advection and Rayleigh-Taylor instability (RTI) as two competing gravity-driven flow mechanisms in the melt-rich layer atop a subducting slab. Scaled laboratory model results, supported by CFD simulations, indicate a transition of the RTI to advection mechanism at a threshold slab-dip angle (α) between 20° and 30°. The advecti...
Using lubrication theory we develop a mechanical model to evaluate the dynamic relation between an orogenic wedge and the overriding plate. The model suggests that the subducting plate motion produces a dynamic pressure in the wedge, which supports the gravity load of the overriding plate lying above it (stable condition). A drop in the dynamic pre...
The India-Asia collision since ~55 Ma has accommodated crustal shortening of nearly 2000 km to build the Himalaya-Tibetan plateau with an average elevation of 5 km. Geological evidences suggest that the convergence process remarkably slowed down in the course of this collision event. Based on a thin viscous sheet approximation, we performed scaled...
Subduction zones witness exhumation of deep crustal rocks metamorphosed under high pressure (HP) and ultra-high pressure (UHP) conditions, following burial to depths of 100 km or more. The exhumation dynamics of HP and UHP rocks still remains a lively issue of research in the Earth science community. We develop a new tectonic model based on the lub...
Applications of the lubrication dynamics in subduction zones generally assume very small wedge taper angles (α < 1º), satisfying the condition of flow within the subduction wedge sub-parallel to the bounding plates. However, many subduction systems have their plate interfaces with α far exceeding 1º. This article aims to address a fundamental quest...
In a convergent tectonic setting the overriding plate (OP) accommodates considerable lithospheric shortening to build characteristic elevated topography. This study accounts for the role of dynamic pressure (P) produced in the subduction wedge to explain how the convergent motion support the excess gravity load of the OP arising from elevated topog...
This work presents both analogue and numerical models of the crustal flow patterns observed in the Himalaya-Tibet collision zone. The collision that began nearly 50 Ma ago has led to the formation of Tibetan Plateau, a remarkable physiographic manifestation of the convergent tectonics. Recent geophysical and geological investigations reveal existen...
