Structural highs on the western continental slope of India: Implications for regional tectonics

Mukhopadhyay, Ranadhir; Rajesh, M.; De, Sutirtha; Chakraborty, Bhaskar; Jauhari, Pratima

doi:10.1016/j.geomorph.2007.07.017

Cited by 19 publications

(11 citation statements)

References 25 publications

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“…During the last four decades different researchers have postulated or deduced sustained uplift along the western continental margin of India (Athavale and Anjaneyulu 1972;Kailasam 1975;Powar 1981;Ollier and Powar 1985;Powar 1993;Radhakrishna 1993;Widdowson and Cox 1996;Widdowson 1997;Subrahmanya 1998;Widdowson and Mitchell 1999;Campanile et al 2008;Mukhopadhyay et al 2008). Based on Bouguer gravity anomalies, Kailasam (1975) identified areas of uplift in Nasik and Sangola;and Power (1981) attributed the typical lineament pattern in DBP to regional uplift.…”

Section: Introductionmentioning

confidence: 99%

Uplift along the western margin of the Deccan Basalt Province: Is there any geomorphometric evidence?

Kale

Shejwalkar

2008

J Earth Syst Sci

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In line with the passive margin landscape evolutionary model in vogue, sustained erosion and long-distance retreat of the Western Ghat escarpment are widely considered to be the results of erosionally-driven isostatic uplift since Tertiary by many workers. Others have postulated or adduced evidence for strong neotectonic activity in the Ghat region. An obvious question in this regard is whether there is any geomorphometric evidence in support of this widespread view? In order to test the hypothesis of ongoing post-rift fexural uplift or neotectonic activity in the western Deccan Basalt Province (DBP), geomorphometric analysis was carried out and commonly used geomorphic indices of active tectonics (GAT) were derived for 30 selected river basins on both sides of the Western Ghat. SRTM-DEM data and ArcGIS were used to derive the indices. Tectonic geomorphic analysis based on five proxy indicators suggests that the differences in GAT indices, both along strike and across the Western Ghat, are statistically insignificant. The index values are nowhere close to the GAT values typically associated with drainage basins affected by active tectonics and deformation. Mapping of the indices reveals lack of discernable trends. The adduced results indicate that the western DBP belongs to the class of relatively low tectonic activity.

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Section: Introductionmentioning

confidence: 99%

Uplift along the western margin of the Deccan Basalt Province: Is there any geomorphometric evidence?

Kale

Shejwalkar

2008

J Earth Syst Sci

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“…surface reflection, low signal-to-noise ratio due to bad weather conditions, etc; Mukhopadhyay et al, 2008). Errors affecting beam acquisitions (e.g.…”

Section: Methodsmentioning

confidence: 99%

DTM-based morphometry of the Palinuro seamount (Eastern Tyrrhenian Sea): Geomorphological and volcanological implications

et al. 2010

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“…In this work, using multibeam data, set of pockmarks were observed close to NNW-SSE trending fault zone. The margin is believed to have been formed in two phases in geological past (Mukhopadhyay et al, 2008). Interestingly, these pockmarks (total: 112) are observed nearly 50 km away from a BSR zone (Rao et al, 2003) marked in the Fig.…”

Section: Use Of Multi-beam Bathymetry and Backscatter Data For Pockmamentioning

confidence: 96%

“…6) across the trench and other areas were collected to constrain exact physiographic profiles of the trench and the ridge. About 20,500 km 2 area was surveyed off the central west coast of India (WCMI) & Mukhopadhyay et al, 2008. WCMI data (site B) was acquired between the Karwar and the Kasargod.…”

Section: Bathymetry Of Deeper Areasmentioning

confidence: 99%

Bathymetric Techniques and Indian Ocean Applications

Chakraborty¹,

Fernandes²

2012

Bathymetry and Its Applications

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Structural highs on the western continental slope of India: Implications for regional tectonics

Cited by 19 publications

References 25 publications

Uplift along the western margin of the Deccan Basalt Province: Is there any geomorphometric evidence?

Uplift along the western margin of the Deccan Basalt Province: Is there any geomorphometric evidence?

DTM-based morphometry of the Palinuro seamount (Eastern Tyrrhenian Sea): Geomorphological and volcanological implications

Bathymetric Techniques and Indian Ocean Applications

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