10Be depositional flux variation in the central Indian Ocean during the last 43 ka

Jena, Partha Sarathi; Bhushan, Ravi; Shivam, Ajay; Bharti, Nisha; Sudheer, A. K.

doi:10.1016/j.scitotenv.2021.149808

Cited by 7 publications

(4 citation statements)

References 80 publications

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“…500 μl of 9 Be carrier (Be concentration of 982 μg/g) was added to the purified quartz grains, and the sample was dissolved by sequential treatment with concentrated HF/HNO 3 solution and aqua regia. Finally, the sample was dissolved in 6N HCl and was processed with a two‐step column chromatography procedure to isolate beryllium from other ions (Jena et al., 2021, Jena, Bhushan, Ajay, et al., 2022; Jena, Bhushan, Ajay, Dabhi, et al., 2023). Beryllium (in the form of Be(OH) 2 ) was precipitated at a higher pH, and the precipitate was heated at 650°C for 6 hr in order to convert it into beryllium oxide (BeO).…”

Section: Methodsmentioning

confidence: 99%

“…To check the procedural blank, a treatment procedure similar to the samples was performed in empty vials. The blanks, standards, and samples were measured for beryllium isotopic ratio in the 1 MV Accelerator Mass Spectrometer (AMS) AURiS (Accelerator Unit for Radioisotope Studies) at PRL (Bhushan et al., 2019; Jena, Bhushan, Ajay, et al., 2022; Jena, Bhushan, Ajay, & Sudheer, 2023). The isotopic ratios were normalized with 07KNSTD 10 Be‐14‐5‐6 (Nishiizumi, 2022; Nishiizumi et al., 2007).…”

Section: Methodsmentioning

confidence: 99%

“…The complete sample preparation procedure is shown in Text S1 of Supporting Information S1, which has been previously detailed in Jena (2022) and Jena, Bhushan, Ajay, et al. (2022). In brief, pure quartz (Al conc.…”

Section: Methodsmentioning

confidence: 99%

“…Quartz extraction, beryllium separation, and isotopic measurements were performed at Physical Research Laboratory (PRL), Ahmedabad, following standard protocols (Dortch et al, 2009;Kohl & Nishiizumi, 1992;Nishiizumi et al, 1994;Ruszkiczay-Rüdiger et al, 2021). The complete sample preparation procedure is shown in Text S1 of Supporting Information S1, which has been previously detailed in Jena (2022) and Jena, Bhushan, Ajay, et al (2022). In brief, pure quartz (Al conc.…”

Section: Beryllium Separation and Isotopic Measurementmentioning

confidence: 99%

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¹⁰Be Exposure Age Dating of Moraine Boulders and Glacially Polished Bedrock Surfaces in Karakoram and Ladakh Ranges, NW Himalaya: Implications in Quaternary Glaciation Studies

Jena,

Bhushan,

Sharma

et al. 2023

JGR Earth Surface

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Terrestrial cosmogenic nuclide (TCN) dating has emerged as one of the most useful techniques in the last two decades for quantifying geomorphological processes and building the chronology of late Quaternary glacial advances/retreats. The chronology based on TCN and optically stimulated luminescence (OSL) dating of glacial landforms from the northwestern (NW) Himalaya suggests that glaciers responded to a complex interaction between temperature and moisture essentially derived from either of the climate systems, the Indian Summer Monsoon (ISM) and the Mid‐latitude Westerlies (MLW). The discrepancies between the TCN ages obtained on moraine boulders/bedrock surfaces, and the OSL ages on the stratigraphically equivalent deposits, highlighted the need for a detailed investigation. The present study attempts to build the chronology of Quaternary glaciation events in the Karakoram and Ladakh Ranges using TCN dating of stratigraphically constrained moraine boulders and striated bedrock surfaces. The TCN ages from glacially eroded surfaces (GES) having prominent striations are narrowly clustered around the Marine Isotopic Stage‐2 (MIS‐2). Agreement between GES TCN ages and OSL ages on the stratigraphically equivalent moraines suggests negligible geological inheritance. The glacial advance during MIS‐2 can be attributed to the combined effect of reduction in north hemispheric insolation and enhanced westerly precipitation. However, relict non‐glacial surfaces and moraine boulders with minimal ice flow modifications yield wide age distributions, most likely suggesting denudational events (interglacials) and/or contribution from tributary valley flanks.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Beryllium Separation and Isotopic Measurementmentioning

confidence: 99%

See 2 more Smart Citations

¹⁰Be Exposure Age Dating of Moraine Boulders and Glacially Polished Bedrock Surfaces in Karakoram and Ladakh Ranges, NW Himalaya: Implications in Quaternary Glaciation Studies

Jena,

Bhushan,

Sharma

et al. 2023

JGR Earth Surface

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Hindering the applicability of the authigenic 10Be/9Be dating by redeposition of mud in hybrid event beds, eastern Danube Basin, Slovakia

Šujan,

Aherwar,

Šarinová

et al. 2025

Applied Geochemistry

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Climate-induced denudation of the Eastern Ghat during the Holocene: A multi-proxy study from Chilika Lagoon (India)

Dash

Dhal²,

Pati³

et al. 2023

CATENA

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10Be depositional flux variation in the central Indian Ocean during the last 43 ka

Cited by 7 publications

References 80 publications

¹⁰Be Exposure Age Dating of Moraine Boulders and Glacially Polished Bedrock Surfaces in Karakoram and Ladakh Ranges, NW Himalaya: Implications in Quaternary Glaciation Studies

¹⁰Be Exposure Age Dating of Moraine Boulders and Glacially Polished Bedrock Surfaces in Karakoram and Ladakh Ranges, NW Himalaya: Implications in Quaternary Glaciation Studies

Hindering the applicability of the authigenic 10Be/9Be dating by redeposition of mud in hybrid event beds, eastern Danube Basin, Slovakia

Climate-induced denudation of the Eastern Ghat during the Holocene: A multi-proxy study from Chilika Lagoon (India)

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10Be depositional flux variation in the central Indian Ocean during the last 43 ka

Cited by 7 publications

References 80 publications

10Be Exposure Age Dating of Moraine Boulders and Glacially Polished Bedrock Surfaces in Karakoram and Ladakh Ranges, NW Himalaya: Implications in Quaternary Glaciation Studies

10Be Exposure Age Dating of Moraine Boulders and Glacially Polished Bedrock Surfaces in Karakoram and Ladakh Ranges, NW Himalaya: Implications in Quaternary Glaciation Studies

Hindering the applicability of the authigenic 10Be/9Be dating by redeposition of mud in hybrid event beds, eastern Danube Basin, Slovakia

Climate-induced denudation of the Eastern Ghat during the Holocene: A multi-proxy study from Chilika Lagoon (India)

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¹⁰Be Exposure Age Dating of Moraine Boulders and Glacially Polished Bedrock Surfaces in Karakoram and Ladakh Ranges, NW Himalaya: Implications in Quaternary Glaciation Studies

¹⁰Be Exposure Age Dating of Moraine Boulders and Glacially Polished Bedrock Surfaces in Karakoram and Ladakh Ranges, NW Himalaya: Implications in Quaternary Glaciation Studies