Early Holocene fluvial activity from the sedimentology and palaeohydrology of gravel terrace in the semi arid Mahi River Basin, India

Sridhar, Alpa; Chamyal, L. S.; Bhattacharjee, Falguni; Singhvi, A. K.

doi:10.1016/j.jseaes.2013.01.017

Cited by 20 publications

(13 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In some of the examples, the massive structure of channel sands is inferred to be due to bioturbation, taking place on exposed river beds during prolonged dry intervals (e.g., Sridhar et al, 2013;Ghandour et al, 2016). Differences in the proportions of massive and horizontally bedded sands seen across rivers in dryland and wetter climates and across rivers in ephemeral to intermittent and perennial rivers mirror differences seen between low-sinuosity rivers and rivers with meandering and braided planform styles.…”

Section: Interpretation Of Facies and Of Variations In Their Frequencmentioning

confidence: 97%

The lithofacies organization of fluvial channel deposits: A meta-analysis of modern rivers

Colombera

Mountney

2019

Sedimentary Geology

View full text Add to dashboard Cite

show abstract

Section: Interpretation Of Facies and Of Variations In Their Frequencmentioning

confidence: 97%

The lithofacies organization of fluvial channel deposits: A meta-analysis of modern rivers

Colombera

Mountney

2019

Sedimentary Geology

View full text Add to dashboard Cite

show abstract

“…Four distinct units of slackwater deposition separated by colluvial units have been related to four phases of flood deposition during the mid to late Holocene, two of which correspond to 4.6 ± 1 ka and 1.7 ± 0.5 ka respectively (Sridhar, 2007a). Flood deposits have also been reported from the middle reaches of the Mahi River belonging to late medieval time (Sridhar, 2009) and as recent as 0.46 and 0.28 ka (Sridhar et al, 2013).…”

Section: Referencementioning

confidence: 96%

“…Most of the palaeoflood data until recently came from the ideal bedrock gorge settings using slackwater deposits however, recent studies have clearly brought out the scope for generating palaeoflood data outside the traditional physiographical setting of bedrock gorges (Sridhar, 2007a, 2009: Sridhar et al, 2014. The late Pleistocene palaeoflood studies mainly rely on discharge estimates based on clast size and channel morphology (Sridhar & Chamyal, 2010;Sridhar et al, 2013;Singh et al, 2021). Nonetheless, the data on past hydrologic changes drawn from palaeoflood analyses of the rivers of India which have short gauging records, can be highly useful in modelling and predicting the nature of future climate change impacts (Kale, 2008).…”

Section: Palaeoflood Studies In Indiamentioning

confidence: 99%

“…It is well established that the continental fluvial records of western India signify the role of monsoon variability during the late Pleistocene-Holocene (Juyal et al, 2006). Since alluvial sedimentary records are the archives of river response to periods of higher and lower discharge, palaeohydrological interpretations concerned with the reconstruction of pastriver flows, average flows of low to moderate magnitude and frequency, or infrequent high magnitude events have been attempted in past decade or so (Sridhar, 2007a, b;Sridhar & Chamyal, 2010, 2018Sridhar et al, 2013Sridhar et al, , 2014Sridhar et al, , 2015Sridhar et al, , 2016.…”

Section: Fluvial Records Of Western Indiamentioning

confidence: 99%

See 1 more Smart Citation

Palaeoflood hydrology of the fluvial continental records of western India: A synthesis

Chamyal

Sridhar

2021

JPS

Self Cite

View full text Add to dashboard Cite

Palaeoflood hydrology has emerged as an important tool to infer quantitative and qualitative aspects of ungauged floods based on their physical evidence. Palaeoflood studies in India have largely been undertaken in the rivers of Peninsular India, western India, Ganga plains and the Himalayas to determine the magnitude and age of extreme floods and their connection to variations in the monsoon intensity. Usually, the alluvial domains are unfavourable for the occurrence and preservation of flood deposits and related discharge estimation. However, the alluvial rivers of western India owing to their semi–confined banks comprising late Pleistocene sediments provide an opportunity for investigating both, the high magnitude flood events as well as average flow conditions. In this synthesis we concisely review the recent palaeohydrological studies in western India in terms of flood magnitude, occurrence of extreme events and its relation to the southwest monsoon variability over various time scales. Based on palaeo–fluvial reconstructions, the sedimentation pattern during late Pleistocene appears to be related to changes in channel gradient and the water surface width rather than to discharge variability. On the other hand, the aggradation in channels during early Holocene was largely controlled by the huge sediment influx and the incision that followed was in response to the increase in the discharge and competence of the river flow. The slackwater records from the bedrock channels have revealed that the large magnitude flood events occurred during wet climate phases during the last two millennia. A clustering of high magnitude events at climatic transitions and arid periods during mid–late Holocene has been surmised. Further the flood associated deposits delimited within Quaternary fluvial landforms and channel morphology are vital as these allow quantification of past flood discharges, velocities and stage levels and thus improve the future flood predictions.

show abstract

“…However, the presence of sandy miliolites intervened by a number of channel activities along with gravels suggests gradual stabilization of the hydrological conditions. The successive deposition of SMs after $16 ka can be ascribed to high moisture availability conditions due to the onset of summer monsoon circulation after the LGM and during the early Holocene strengthened ISM (Berger & Loutre, 1991;Bhattacharya, 2020;Herzschuh, 2006;Sridhar et al, 2013;Van Campo, 1986).…”

Section: Chronologymentioning

confidence: 99%

Late‐Quaternary miliolite (biogenic carbonate) deposits and their implications for sea‐level fluctuations and climatic variability

Prasad¹,

Bhattacharya

Chauhan

et al. 2021

Earth Surf Processes Landf

View full text Add to dashboard Cite

The western coast of India (Kachchh) has ubiquitous preservations of Quaternary carbonate deposits popularly known as "miliolites". Field-based detail documentation of the nature and distribution of miliolites supported by sedimentology and scanning electron microscopy (SEM) microtextural studies indicates that the miliolites were primarily deposited by wind as aeolinites and are termed "primary miliolites (PM)". These were subsequently fluvially eroded and deposited and such deposits are termed "secondary miliolites (SM)". The PM are dated between 28 ka to 16 ka largely clustering around the Last Glacial Maxima (LGM). In comparison, the fluvially reworked SM occurs as valley-fill deposits and were deposited episodically during 23 ka to 10 ka before present. Climatically, the deposition of PMs suggests enhanced aridity whereas SMs represent episodic strengthening of the Indian Summer Monsoon (ISM). The bedding attitudes of the PMs indicate that they were deposited predominantly by the northeasterly winds whereas the presence of the deflation lag deposits suggests downwind migration of sands during the equilibrium condition (reduced sediment supply). The aeolian parameters (based on the grain size and wind velocities) for PMs indicate high shear velocity ($23 to 48 cm −1 ) and high transport rate (< 0.1 to 0.2 g/cm s). The short average flying distance implies that the biogenic sands were transported in multiple pulses (from coast to inland) at rates varying from $200 m/h to $1 km/h. Comparing our data with related occurrences along the biologically productive coasts in the mid-latitudinal belt indicates that the regional/global aridity during the lowered sea level was responsible for inland occurrences of aeolinites, particularly during the LGM. The strengthened northeast monsoon winds during the LGM was conducive to upwelling and production of biogenic carbonates along the coasts. The subsequent reworking of the aeolinites were mainly the results of local variability in precipitation.

show abstract

Early Holocene fluvial activity from the sedimentology and palaeohydrology of gravel terrace in the semi arid Mahi River Basin, India

Cited by 20 publications

References 39 publications

The lithofacies organization of fluvial channel deposits: A meta-analysis of modern rivers

The lithofacies organization of fluvial channel deposits: A meta-analysis of modern rivers

Palaeoflood hydrology of the fluvial continental records of western India: A synthesis

Late‐Quaternary miliolite (biogenic carbonate) deposits and their implications for sea‐level fluctuations and climatic variability

Contact Info

Product

Resources

About