Mineralogy and geochemistry of the sediments in rivers along the east coast of India: Inferences on weathering and provenance

Babu, Shaik Sai; Rao, V. Purnachandra; Satyasree, Nannapaneni; Ramana, R. Venkata; Mohan, M. Ram; Sawant, S. S.

doi:10.1007/s12040-020-01551-5

Cited by 12 publications

(2 citation statements)

References 88 publications

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“…The variations in REE's have been extensively used to study provenance because of their lower mobility rates during weathering and transportation (Bessa et al, 2021; Das & Gaye, 2003; Nair & Achyuthan, 2017; Sahoo et al, 2017; Saibabu et al, 2021; Sandeep, Shankar, & Warrier, 2022). The chondrite‐normalized REE pattern (Figure 5) indicate the enrichment of LREEs with respect to HREEs.…”

Section: Discussionmentioning

confidence: 99%

The geochemical and pedogenic signatures of Shantisagara lake sediments, southern India: Implications for weathering, terrigenous influx, and provenance during the Holocene

et al. 2022

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Section: Discussionmentioning

confidence: 99%

The geochemical and pedogenic signatures of Shantisagara lake sediments, southern India: Implications for weathering, terrigenous influx, and provenance during the Holocene

et al. 2022

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“…Similar to the Nethravati River, a geochemical split among finer and coarser sediment is also observed in the floodplain sediments of the Cauvery River, an east‐flowing river draining Peninsular Gneisses (Sensarma et al., 2008) and granulite series (Rajamani et al., 2009). The sediment geochemistry of the east‐flowing rivers (Babu et al., 2021) and west‐flowing rivers of Peninsular India (Babu et al., 2023) also suggests the dominance of mafic to intermediate composition in the finer sediments (Ahmad & Singh, 2020). Further, the average clay composition of Peninsular India Rivers (known as PIRAC) also exhibits mafic to intermediate composition (Babu et al., 2020).…”

Section: Implications In Deciphering Indian Ocean Sediment Provenancementioning

confidence: 99%

Geochemical Split Among the Suspended and Mud Sediments in the Nethravati River: Insights to Compositional Similarity of Peninsular Gneiss and the Deccan Basalt Derived Sediments, and Its Implications on Tracing the Provenance in the Indian Ocean

Gurumurthy

2024

Geochem Geophys Geosyst

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Major, trace, and rare earth element (REE) geochemistry of sediments from a tropical mountain river is investigated to understand the behavior of chemical elements during weathering and transportation in a Peninsular Gneissic terrain. The results from this study are compared with the Deccan Basalt‐derived River sediments and the eastern Arabian Sea sediments with an intent to highlight the challenges associated with the provenance determination of sediments along the continental margin of India. The geochemistry of suspended particulate matter (SPM) and mud sediments (<63 μm) of the Nethravati River indicate that sediments are derived from a relatively homogenous lithology, characterized by intermediate rocks of tonalitic (low‐Al TTGs) composition. The tectonic origin of the source rocks discriminated using sediment geochemistry suggests an ocean island arc origin. The sediments experience intense chemical weathering in the source region. The elemental composition and their inter‐element relationships suggest differential chemical weathering of mineral phases fractionate mafic components and their secondary mineral products in SPM, and mixed sources dominated by felsic components and their secondary mineral products in mud sediments. Intense chemical weathering induces significant geochemical splits among the suspended and mud sediments. The transport of mafic‐biased sediments from Peninsular India to Oceans, and the geochemical similarity with Deccan Basalt‐derived sediments makes it challenging to track the Peninsular Gneiss‐derived sediment provenance along the continental margin of India using conventional elemental geochemistry. The inferences from this study have important implications for determining the sediment provenance along the continental margin of India.

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Composition of river sediments from Kerala, southwest India: Inferences on lateritic weathering

Babu,

Prajith,

Rao

et al. 2023

J Earth Syst Sci

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Mineralogy and geochemistry of the sediments in rivers along the east coast of India: Inferences on weathering and provenance

Cited by 12 publications

References 88 publications

The geochemical and pedogenic signatures of Shantisagara lake sediments, southern India: Implications for weathering, terrigenous influx, and provenance during the Holocene

The geochemical and pedogenic signatures of Shantisagara lake sediments, southern India: Implications for weathering, terrigenous influx, and provenance during the Holocene

Geochemical Split Among the Suspended and Mud Sediments in the Nethravati River: Insights to Compositional Similarity of Peninsular Gneiss and the Deccan Basalt Derived Sediments, and Its Implications on Tracing the Provenance in the Indian Ocean

Composition of river sediments from Kerala, southwest India: Inferences on lateritic weathering

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