Ground-Penetrating Radar Investigations along Hajipur Fault: Himalayan Frontal Thrust—Attempt to Identify Near Subsurface Displacement, NW Himalaya, India

Malik, Javed N.; Kumar, Ashutosh; Satuluri, Sravanthi; Puhan, B.; Mohanty, Asmita

doi:10.1155/2012/608269

Cited by 7 publications

(4 citation statements)

References 20 publications

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“…The Hajipur Fault shows 7.5 -8 m vertical displacement, a 7.6 + 1.7 mm a 21 slip rate and a 258 dip . Studies using ground-penetrating radar revealed that the dip of the Hajipur Fault varies substantially and that it has four splays (Malik et al 2012). Philip et al (2009) recognized the Panchbhaiya Thrust to be still active and referred to the NW-trending Rajban Thrust, possibly another out-of-sequence thrust sub-parallel to the Panchbhaiya Thrust.…”

Section: Himachal Pradesh Punjab and Haryana (India)mentioning

confidence: 99%

A review on out-of-sequence deformation in the Himalaya

Mukherjee

2015

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Section: Himachal Pradesh Punjab and Haryana (India)mentioning

confidence: 99%

A review on out-of-sequence deformation in the Himalaya

Mukherjee

2015

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“…The study opened the possibility of three-dimensional GPR imaging of subsurface geological structures. Successive studies extended the approach to characterize active faults in different tectonic regimes combining 2D and pseudo-3D GPR surveys (e.g., Gross et al, 2002Gross et al, , 2003Gross et al, , 2004Green et al, 2003;Tronicke et al, 2006;McClymont et al, 2008McClymont et al, , 2009McClymont et al, , 2010Vanneste et al, 2008;Christie et al, 2009;Carpentier et al, 2012a, b;Malik et al, 2012;Brandes et al, 2018). A review of the near-surface GPR faulting studies suggests some reflection characteristics as possible indicators for the detection of subsurface fractures and faults (e.g., Smith and Jol, 1995;Liner and Liner, 1997;Reiss et al, 2003;Gross et al, 2004;McClymont et al, 2008and Bubeck et al, 2015.…”

Section: Methodsmentioning

confidence: 99%

Ground-penetrating radar signature of Quaternary faulting: a study from the Mt. Pollino region, southern Apennines, Italy

et al. 2021

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Abstract. With the aim of unveiling evidence of Late Quaternary faulting, a series of ground-penetrating radar (GPR) profiles were acquired across the southern portion of the Fosso della Valle–Campotenese normal fault (VCT), located at the Campotenese continental basin (Mt. Pollino region) in the southern Apennines active extensional belt (Italy). A set of 49 GPR profiles, traced nearly perpendicular to this normal fault, was acquired using 300 and 500 MHz antennas and carefully processed through a customized workflow. The data interpretation allowed us to reconstruct a pseudo-3D model depicting the boundary between the Mesozoic bedrock and the sedimentary fill of the basin, which were in close proximity to the fault. Once the GPR signature of faulting was reviewed and defined, we interpret near-surface alluvial and colluvial sediments dislocated by a set of conjugate (W- and E-dipping) discontinuities that penetrate inside the underlying Triassic dolostones. Close to the contact between the continental deposits and the bedrock, some buried scarps which offset wedge-shaped deposits are interpreted as coseismic ruptures, subsequently sealed by later deposits. Our pseudo-3D GPR dataset represented a good trade-off between a dense 3D-GPR volume and conventional 2D data, which normally requires a higher degree of subjectivity during the interpretation. We have thus reconstructed a reliable subsurface fault pattern, discriminating master faults and a series of secondary splays. This contribution better characterizes active Quaternary faults in an area which falls within the Pollino seismic gap and is considered prone to severe surface faulting. Our results encourage further research at the study site, whilst we also recommend our workflow for similar regions characterized by high seismic hazard and scarcity of near-surface geophysical data.

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“…CC BY 4.0 License. characterize active faults in different tectonic regimes combining 2D and pseudo-3D GPR surveys (Gross et al 2000(Gross et al , 2002(Gross et al , 2003(Gross et al , 2004Green et al 2003;Horstmeyer et al 2005;Tronicke et al 2006;McClymont et al 2008McClymont et al , 2009McClymont et al , 2010Vanneste et al 2008;Christie et al 2009;Carpentier et al 2012a,b;Malik et al 2012;Brandes et al 2018). A review of the near-surface GPR faulting studies suggests some reflection characteristics as possible indicators for the detection of subsurface fractures and faults (e.g.…”

Section: Methodsmentioning

confidence: 99%

GPR signature of Quaternary faulting: a study from the Mt. Pollino region, southern Apennines, Italy

Ercoli

Cirillo

Pauselli

et al. 2021

Preprint

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Abstract. With the aim of unveiling evidence of Late Quaternary faulting, a series of Ground Penetrating Radar (GPR) profiles were acquired across the Campotenese continental basin (Mt. Pollino region) in the southern Apennines active extensional belt (Italy). A set of forty-nine 300 MHz and 500 MHz GPR profiles, traced nearly perpendicular to a buried normal fault, were acquired and carefully processed through a customized workflow. The data interpretation allowed us to reconstruct a pseudo-3D model depicting the boundary between the Mesozoic bedrock and the sedimentary fill of the basin, which were in close proximity to the fault. Once reviewing and defining the GPR signature of faulting, we highlight in our data how near surface alluvial and colluvial sediments appear to be dislocated by a set of conjugate (west and east-dipping) discontinuities that penetrate inside the underlying Triassic dolostones. Close to the contact between the continental deposits and the bedrock, some buried scarps which offset wedge-shaped deposits are interpreted as coseismic ruptures, subsequently sealed by later deposits. Although the use of pseudo-3D GPR data implies more complexity linking the geophysical features among the radar images, we have reconstructed a reliable subsurface fault pattern, discriminating master faults and a series of secondary splays. We believe our contribution provides an improvement in the characterization of active faults in the study area which falls within the Pollino seismic gap and is considered potentially prone to severe surface faulting. Our aim is for our approach and workflow to be of inspiration for further studies in the region as well as for similar high seismic hazard areas characterized by scarcity of near-surface data.

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Ground-Penetrating Radar Investigations along Hajipur Fault: Himalayan Frontal Thrust—Attempt to Identify Near Subsurface Displacement, NW Himalaya, India

Cited by 7 publications

References 20 publications

A review on out-of-sequence deformation in the Himalaya

A review on out-of-sequence deformation in the Himalaya

Ground-penetrating radar signature of Quaternary faulting: a study from the Mt. Pollino region, southern Apennines, Italy

GPR signature of Quaternary faulting: a study from the Mt. Pollino region, southern Apennines, Italy

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