Journal ArticleDOI
Size characteristics and mineralogy of suspended sediments of the Ganges river, India
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In this paper, a study was conducted on the size distribution and mineral characteristics of the suspended sediments of the Ganges river and is reported here, showing that most of the sediment load has a size range between <4-5.75 φ.Abstract:
With a mean annual flow of 5.9×1011m3yr−1 and sediment load of 1600x1012gyr−1 the Ganges river ranks second and third, respectively, in terms of water flow and sediment load among the world's rivers. Considering the enormous sediment transport by Ganges to the Bay of Bengal, a study was conducted on the size distribution and mineral characteristics of the suspended sediments of the Ganges river and is reported here. Most of the sediment load has a size range between <4–5.75 φ). The sediments are mostly medium to coarse silt and are poorly sorted. Mica dominates among the clay minerals, followed by chlorite, vermiculite, kaolinite, and smectite. Due to differences in geology, smectite becomes a major clay mineral in downstream rivers. At Calcutta, the clay mineral transport in millions of tons per year is 18,464, 8000, and 2147, for mica, smectite, and chlorite, respectively.read more
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Stratigraphic evolution of the late Holocene Ganges–Brahmaputra lower delta plain
TL;DR: Sediment cores from the Ganges-Brahmaputra delta in Bangladesh were examined for sedimentological character, clay mineralogy, elemental trends (C, N, S), and 14C geochronology to develop a model for the sedimentary sequence resulting from lower delta plain progradation in the late Holocene as discussed by the authors.
Journal ArticleDOI
Perfluoroalkyl substances (PFAS) in river and ground/drinking water of the Ganges River basin: Emissions and implications for human exposure.
Brij Mohan Sharma,Girija K. Bharat,Shresth Tayal,Thorjørn Larssen,Jitka Bečanová,Pavlína Karásková,Paul Whitehead,Martyn N. Futter,Dan Butterfield,Luca Nizzetto +9 more
TL;DR: Prevalence of short-chain PFAS indicates that the effects of PFOA and PFOS substitution are visible in environmental samples from India, and daily PFAS exposure intakes through drinking water were below safety thresholds for oral non-cancer risk in all age groups.
Journal ArticleDOI
Sediment characteristics and transportation dynamics of the Ganga River
TL;DR: In this paper, a study of the Ganga River sediments for their textural properties, grainsize characteristics, and transportation dynamics is presented, where a suite of recently deposited sediments (189 bedload samples and 27 suspended load samples) of the river and its tributaries was collected from 63 locations.
Journal ArticleDOI
Weathering of the Ganga alluvial plain, northern India: implications from fluvial geochemistry of the Gomati River
TL;DR: In this paper, a geochemical study of the Ganga weathering products transported by the Gomati River (the Ganga River tributary) to understand weathering processes of an alluvial plain in a humid sub-tropical climate is presented.
Journal ArticleDOI
Mineralogy of the Ganges and Brahmaputra Rivers: implications for river switching and Late Quaternary climate change
TL;DR: In this paper, mineralogic and stratigraphic data indicates that the two rivers have changed position several times during the Holocene and that they have rapidly migrating braided channels during sea level lowstand.
References
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Journal ArticleDOI
World-Wide Delivery of River Sediment to the Oceans
John D. Milliman,Robert H. Meade +1 more
TL;DR: The authors showed that rivers with large sediment loads (annual discharges greater than about $15 \times 10^{6}$ tons) contribute about $7 −times 10 −9$ tons of suspended sediment to the ocean yearly.
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Mineralogy and Sedimentation of Recent Deep-Sea Clay in the Atlantic Ocean and Adjacent Seas and Oceans
TL;DR: In this article, the relative abundances of montmorillonite, illite, kaolinite, chlorite, gibbsite, pyrophyllite, mixed-layer clay minerals, feldspars, and dolomite were determined.
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Major ion chemistry of the Ganga-Brahmaputra river system: Weathering processes and fluxes to the Bay of Bengal
TL;DR: A detailed and systematic study of the major ion chemistry of these rivers and their tributaries, as well as the clay mineral composition of the bed sediments has been conducted in this paper.
Journal ArticleDOI
The distribution of clay minerals in the World Ocean
TL;DR: In this article, the relative amounts of chlorite, montmorillonite, kaolinite and illite in the less than 2 micron size fraction of pelagic sediments are related to the sources and transport paths of solid phases from the continents to the oceans and to injections of volcanic materials to the marine environment.