Geomorphic Characterization of the Banni Plain, Kachchh, Using Orbital Imaging Radar (RISAT 1C) and Optical Remote Sensing Data

Maurya, D. M.; Tiwari, Mamta; Rajawat, A. S.; Kumar, Hrishikesh; Khonde, Nitesh; Chamyal, L. S.

doi:10.17491/cgsi/2016/105419

Cited by 3 publications

(8 citation statements)

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“…than the salt encrusted, marine tidal inundation-prone, supra-tidal flat of the central and northern part of the GRK Basin (2-4 m a.s.l. ; Kar, 1993;Merh, 2005;Maurya et al, 2008Maurya et al, , 2009Maurya et al, , 2016Padmalal et al, 2019;Figure 1C). At the present time, there are parts of the Banni Plain inundated only by monsoonal rains.…”

Section: Regional Settingmentioning

confidence: 99%

“…The present elevations of the Banni Plain and the Great Rann surface is attributed to differential tectonic uplift along subsurface structures, accompanied by seismic activity during the last ca 2 kyr (Biswas, 1974;Maurya et al, 2013Maurya et al, , 2016Merh, 2005;Padmalal et al, 2019;Roy & Merh, 1981). Geomorphological, archaeological and historical accounts show that the entire Banni-Great Rann Basin was submerged under a shallow sea until ca 2 ka (Biswas, 1974(Biswas, , 1993Gaur et al, 2013;Glennie & Evans, 1976;Maurya et al, 2013Maurya et al, , 2016Roy & Merh, 1981). However, the sedimentary evolution, palaeoenvironments and impact of sea-level changes are not documented from the Banni Plain.…”

Section: Regional Settingmentioning

confidence: 99%

“…The five facies and their depositional units observed in the Berada core include the fluvial to transgressive facies, estuarine to marshy facies, the sub-tidal zone facies, the intertidal facies type and the supra-tidal facies (Figures 7 and 8). The Banni-Great Rann Basin is a challenging area in which to interpret sea-level changes due to its tectonically and seismically active nature (Maurya et al, 2006(Maurya et al, , 2013(Maurya et al, , 2016. The sedimentary evolution of the Banni Plain is discussed with respect to the sea-level changes and palaeoenvironmental conditions.…”

Section: Interpretationsmentioning

confidence: 99%

“…The flat surface with extremely gentle gradients is the most distinguishing characteristic of the Banni Plain. Annual submergence during monsoons is controlled by subtle topographic variations related to subsurface structural elements (Maurya et al, 2016). Topographic variations show four surfaces: the higher Banni surface, the middle Banni surface, the lower Banni surface and the saline/salt encrusted surface, including depressions (Maurya et al, 2016).…”

Section: Regional Settingmentioning

confidence: 99%

“…Annual submergence during monsoons is controlled by subtle topographic variations related to subsurface structural elements (Maurya et al, 2016). Topographic variations show four surfaces: the higher Banni surface, the middle Banni surface, the lower Banni surface and the saline/salt encrusted surface, including depressions (Maurya et al, 2016). The linear depression running east–west through the Banni Basin comprising several water bodies and stretches of salt encrusted saline surfaces formed due to drying up of submerging waters.…”

Section: Regional Settingmentioning

confidence: 99%

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Holocene evolution of the Banni Plain at the north‐east margin of the Arabian Sea: Constraints from a ca 50 m long sediment core

Kumar

Maurya

Phartiyal³

et al. 2023

The Depositional Record

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Holocene evolutionary history of the Banni Plain in the Great Rann of the Kachchh Basin is reconstructed from a subsurface sediment core of ca 50 m. Detailed data on textural and lithofacies variations, grain‐size analysis, environmental magnetism and accelerator mass spectrometry 14C dates on seven samples were generated on the sediment core retrieved from the Banni Plain near Berada. A high‐resolution record extending back to 10 ka has been reconstructed from the top ca 40 m of the core section comprising shallow marine sediments. The core is divisible into five depositional units. The basal part is a fluvial depositional unit followed upward by estuarine, sub‐tidal, intertidal and supra‐tidal environments. The sediment accumulation rate is highest in the sub‐tidal to intertidal facies (1.9 cm year−1) and decreases towards the supra‐tidal facies to 0.09 cm year−1. Environmental magnetic analysis, χlf coupled with the S‐ratio, indicates high magnetic mineral concentrations during the Early Holocene, suggesting a wet period accompanied by high monsoon precipitation. This is followed by the onset of semi‐arid conditions in the Great Rann of the Kachchh Basin as indicated by the low values of the χlf and S‐ratios. A westward and northward shift in the shoreline towards the deeper part of the basin is suggested during the Late Holocene, which is coupled with aridity and reduced monsoonal conditions. The change in depositional pattern from the retrogradational deposit of fluvial (Unit 1) to estuarine sediment (Unit 2), progressing to sub‐tidal (Unit 3), is attributed to sea‐level transgression followed by regressive intertidal (Unit 4) to supra‐tidal deposition (Unit 5), culminating in complete withdrawal of the sea, aided by tectonic uplift, during the Late Holocene. The results reveal that the sediment accumulation rates and depositional environments changed over time in response to changes in sea level from minima to maxima and then eventually to the present level.

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Section: Regional Settingmentioning

confidence: 99%