What question did this study set out to answer?

To determine the provenance, transport dynamics, and depositional environment of recent fluvial sediments in the Northern Brahmaputra–Jamuna River system.

November 13, 2025MineralsOpen Access

Depositional Environment and Sediment Dynamics of the Northern Brahmaputra–Jamuna River, Bangladesh: A Combined Geochemical, Mineralogical, Grain Morphology, and Statistical Analysis

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Authors

MMMd. Golam MostafaBangladesh Council of Scientific and Industrial Research MRMd. Aminur RahmanBangladesh Council of Scientific and Industrial Research MPMark I. PowncebyCommonwealth Scientific and Industrial Research Organisation

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Implication

Sedimentary analysis reveals medium-to-fine sand textures and moderate weathering in fluvial deposits, indicating high-energy transport from mechanically weathered source rocks.

Key Points

To determine the provenance, transport dynamics, and depositional environment of recent fluvial sediments in the Northern Brahmaputra–Jamuna River system.
Analyzed recent fluvial sediment samples using X-ray diffraction, wavelength dispersive X-ray fluorescence, field emission scanning electron microscopy, and electron probe microanalysis.
Conducted grain size distribution assessments and multivariate statistical evaluations, including principal component analysis and K-means clustering.
Fluvial sediments consist predominantly of medium-to-fine sand (mean grain size 1.77–3.43 ϕ) with high SiO2 (63.39%–70.94%), Al2O3 (12.25%–14.20%), and chemical index of alteration values ranging from 60.90 to 66.82.
Microstructural analysis revealed angular to sub-angular grains with conchoidal fractures, while clustering separated sediments into two regimes (finer-grained at 2.36 ϕ and coarser at 2.98 ϕ) characteristic of shallow fluvial and turbidite environments.

Cite This Study

Mostafa et al. (2025) studied this question.

synapsesocial.com/papers/6aa533d324014aaf7fdd4396 https://doi.org/10.3390/min15111192

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Implication

Sedimentary analysis reveals medium-to-fine sand textures and moderate weathering in fluvial deposits, indicating high-energy transport from mechanically weathered source rocks.

Depositional Environment and Sediment Dynamics of the Northern Brahmaputra–Jamuna River, Bangladesh: A Combined Geochemical, Mineralogical, Grain Morphology, and Statistical Analysis

Discussion

Member takes

Implication

Key Points

Cite This Study

Depositional Environment and Sediment Dynamics of the Northern Brahmaputra–Jamuna River, Bangladesh: A Combined Geochemical, Mineralogical, Grain Morphology, and Statistical Analysis

Discussion

Member takes

Implication

Key Points

Cite This Study

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