Distribution and dispersal of surface sediments on the continental margins of India

Sebastian, Tyson; Nath, B. Nagender; Ramaswamy, V.; Mascarenhas‐Pereira, M.B.L.; Yazing, Armoury Kazip; Apurva, Peeyush Raj; Linsy, P.; Kocherla, M.; Miriyala, Pavan; Rao, B. Ramalingeswara

doi:10.1016/j.marpetgeo.2019.07.017

Cited by 10 publications

(3 citation statements)

References 53 publications

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“…2017; Sebastian et al . 2019). The magnetic susceptibility is generally the result of sediment provenance, sediment grain size and sediment diagenesis.…”

Section: Discussionmentioning

confidence: 99%

“…The environmental magnetic and geochemical characteristics of sediments have been used to infer the Indus Fan sediment provenance since the late Miocene. The rationale for using environmental magnetism for provenance tracing includes (i) the major source of Indus Fan sedimentation is through the Indus River with a minor contribution from primitive igneous rocks derived from Deccan Province / Trans-Himalayas, and (ii) the magnetic mineral concentration of primitive igneous rocks (mafic rocks) is higher than that of felsic rocks, owing to differences in abundance of ferrimagnetic and diamagnetic minerals (Clark & Emerson, 1991;Sebastian et al 2019). Therefore, the erosional products of mafic and felsic rocks carry differing magnetic mineral concentrations and mineralogy.…”

Section: C Provenance Of Sediments At Site U1457 Of the Laxmi Basinmentioning

confidence: 99%

“…The sediments derived through primitive igneous rocks (mafic rocks) exhibit higher magnetic mineral concentration due to the presence of Fe-oxides, and mineralogy is expected to be dominated by magnetite and titanomagnetite (Rao & Wagle, 1997;Kumar et al 2005;Sangode et al 2017;Sebastian et al 2019). The magnetic susceptibility is generally the result of sediment provenance, sediment grain size and sediment diagenesis.…”

Section: C Provenance Of Sediments At Site U1457 Of the Laxmi Basinmentioning

confidence: 99%

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Hydroclimatic conditions and sediment provenance in the northeastern Arabian Sea since the late Miocene: insights from geochemical and environmental magnetic records at IODP Site U1457 of the Laxmi Basin

et al. 2023

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Palaeo-monsoon and palaeoclimate conditions over Southeast Asia are a matter of debate despite notable studies on the continental and oceanic sedimentary record. The present study investigates the environmental magnetic and geochemical records preserved in the deep marine sediments of the northeastern (NE) Arabian Sea to elucidate the erosion history of the western Himalayas and its link with the prevailing hydroclimatic conditions since the late Miocene. For this, the sediment core retrieved during International Ocean Discovery Program (IODP) Expedition 355 at Site U1457 in the NE Arabian Sea has been explored. The results reveal that the hydroclimatic conditions were predominantly arid during the late Miocene, except for humid intervals from 6.1 Ma to 5.6 Ma. Humid climate conditions in the Indus River Basin returned during the mid-Pliocene and continued to the Pleistocene with an intense chemical weathering regime from 1.9 Ma to 1.2 Ma. The dominant sediment source to the NE Arabian Sea at Site U1457 during the late Miocene and the Pliocene was the Indus River, while during the Pleistocene, mixed sediments brought by the Indus River and the Peninsular Indian rivers were observed. The sediment contribution from a chemically less altered mafic source (the Deccan basalts) increased between 1.2 Ma and 0.2 Ma, possibly linked to a weak Indian Summer Monsoon. The summer monsoon wind strength and associated shift in the Inter-Tropical Convergence Zone (ITCZ) influenced the dominant sediment provenance at Site U1457 of the Laxmi Basin.

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“…2017; Sebastian et al . 2019). The magnetic susceptibility is generally the result of sediment provenance, sediment grain size and sediment diagenesis.…”

Section: Discussionmentioning

confidence: 99%

Section: C Provenance Of Sediments At Site U1457 Of the Laxmi Basinmentioning

confidence: 99%

Section: C Provenance Of Sediments At Site U1457 Of the Laxmi Basinmentioning

confidence: 99%

See 1 more Smart Citation

Hydroclimatic conditions and sediment provenance in the northeastern Arabian Sea since the late Miocene: insights from geochemical and environmental magnetic records at IODP Site U1457 of the Laxmi Basin

et al. 2023

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Imprints of post-glacial sea-level changes in the Visakhapatnam Bay (VB) basin: first documentation from multibeam bathymetry data

et al. 2023

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Sedimentary response to the contrasting provenance and oceanographic conditions on the continental shelf of India

Kadam

Badesab²,

Gaikwad³

et al. 2022

Continental Shelf Research

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Distribution and dispersal of surface sediments on the continental margins of India

Cited by 10 publications

References 53 publications

Hydroclimatic conditions and sediment provenance in the northeastern Arabian Sea since the late Miocene: insights from geochemical and environmental magnetic records at IODP Site U1457 of the Laxmi Basin

Hydroclimatic conditions and sediment provenance in the northeastern Arabian Sea since the late Miocene: insights from geochemical and environmental magnetic records at IODP Site U1457 of the Laxmi Basin

Imprints of post-glacial sea-level changes in the Visakhapatnam Bay (VB) basin: first documentation from multibeam bathymetry data

Sedimentary response to the contrasting provenance and oceanographic conditions on the continental shelf of India

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