Cosmogenic 10Be and 26Al sample preparation at the University of Wollongong

Codilean, Alexandru T.; Fülöp, Réka‐Hajnalka; Wilcken, Klaus M.; Koutamanis, Dafne S.; Fink, David; Fifield, L.K.; Wong, Henri; Enge, T. Gabriel; Vardanega, Chris; Rowling, Brett

doi:10.1016/j.nimb.2022.12.003

Cited by 4 publications

(2 citation statements)

References 55 publications

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“…Stream sediment was sieved to isolate the 250–500 μm fraction, and quartz was purified following procedures described in Kohl & Nishiizumi (1992) using froth flotation to separate feldspars from quartz. Beryllium was extracted using ion chromatography following procedures outlined in Codilean et al (2023). Samples were spiked with ~300 μg of 9 Be from a low‐level beryl carrier solution added prior to complete HF dissolution.…”

Section: Methodology and Methodsmentioning

confidence: 99%

Magnitude and timing of transient incision resulting from large‐scale drainage capture, Sutlej River, Northwest Himalaya

Penserini,

Morell,

Codilean

et al. 2023

Earth Surf Processes Landf

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Few studies have constrained the magnitudes and timescales associated with large‐scale drainage captures (areas >103 km2), even though these constraints are crucial to reconstruct sediment budgets, assess the potential for drainage reorganization to be preserved in the rock record, and determine the extent to which environmental signals (i.e., structures, composition and fossil assemblages within sedimentary rocks that are influenced by sediment supply and transport) are representative of conditions during deposition. In this work, we characterize the Pleistocene capture of the Zhada Basin, an ~23 000 km2 extensional basin in southern Tibet, by the Sutlej River, a prominent tributary to the Indus River. We quantify the magnitudes and timescales of capture‐driven erosion using knickpoint celerity modelling, paleotopographic reconstructions, 10Be‐derived denudation rates, and topographic analyses of drainage divides. We find that capture has removed 2010 ± 400 km3 of sediment from the Zhada Basin, increasing sediment supply to the Sutlej network by 17%–29% since 735 ± 269 ka. This work represents a crucial step towards reconstructing the Pleistocene sediment budget of the Indus sedimentary system and identifying potential impacts from sediment redistribution. We also identify several plausible tectonic or autogenic mechanisms that may have facilitated capture of the Zhada Basin, including: (1) preferential erosion of weak lithologies along active faults, (2) headward erosion in response to prior capture of the Spiti River and (3) headward erosion generated by breaching of a structural culmination downstream (the Kullu‐Rampur Window). This provides a framework to assess the mechanistic links between arc‐parallel extension, large‐scale drainage capture, landscape evolution and orogenic wedge deformation.

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Section: Methodology and Methodsmentioning

confidence: 99%

Magnitude and timing of transient incision resulting from large‐scale drainage capture, Sutlej River, Northwest Himalaya

Penserini,

Morell,

Codilean

et al. 2023

Earth Surf Processes Landf

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“…Quartz was purified following the procedures described in Kohl and Nishiizumi (1992) using froth flotation to separate feldspars from quartz. For all samples except those labeled "DRMS" in Table S1 in Supporting Information S2, beryllium was separated at the University of Wollongong (UOW) following procedures described in Codilean et al (2023). Samples were spiked with ≈300 μg of 9 Be from a low-level beryllium carrier solution added prior to complete HF dissolution.…”

Section: Sample Preparationmentioning

confidence: 99%

Impact of Quaternary Glaciations on Denudation Rates in North Pamir—Tian Shan Inferred From Cosmogenic ¹⁰Be and Low‐Temperature Thermochronology

Kudriavtseva,

Codilean,

Sobel

et al. 2023

JGR Earth Surface

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We explore the spatial and temporal variations in denudation rates in the northern Pamir—Tian Shan region using 10Be‐derived denudation rates from modern (n = 110) and buried sediment (2.0–2.7 Ma; n = 3), and long‐term exhumation rates from published apatite fission track (AFT; n = 705) and apatite (U‐Th‐Sm)/He (AHe; n = 211) thermochronology. We found moderate correlations between denudation rates and topographic metrics and weak correlations between denudation rates and annual rainfall, highlighting complex linkages among tectonics, climate, and surface processes that vary locally. The 10Be data show a spatial trend of decreasing modern denudation rates from west to east, suggesting that deformation and precipitation control denudation in the northern Pamir and western Tian Shan. Farther east, the denudational response of the landscape to Quaternary glaciations is more pronounced and reflected in our data. Modern 10Be denudation rates are generally higher than the long‐term AFT and AHe exhumation rates across the studied area. In the Kyrgyz Tian Shan, on average, the highest 10Be denudation rates are recorded in the Terskey range, south of Lake Issyk‐Kul. Here, modern denudation rates are higher than 10Be‐derived paleo‐denudation rates, which are comparable in magnitude with the long‐term exhumation rates inferred from AFT and AHe. We propose that denudation in the region, particularly in the Terskey range, remained relatively steady during the Neogene and early Pleistocene. Denudation increased due to glacial‐interglacial cycles in the Quaternary, but this occurred after the onset and intensification of the Northern Hemisphere glaciations at 2.7 Ma.

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A simple method of purifying authigenic 10Be from sediments for AMS-analysis

Loftfield,

Lachner,

Malter

et al. 2024

Nuclear Instruments and Methods in Physics Research Section B:

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Cosmogenic 10Be and 26Al sample preparation at the University of Wollongong

Cited by 4 publications

References 55 publications

Magnitude and timing of transient incision resulting from large‐scale drainage capture, Sutlej River, Northwest Himalaya

Magnitude and timing of transient incision resulting from large‐scale drainage capture, Sutlej River, Northwest Himalaya

Impact of Quaternary Glaciations on Denudation Rates in North Pamir—Tian Shan Inferred From Cosmogenic ¹⁰Be and Low‐Temperature Thermochronology

A simple method of purifying authigenic 10Be from sediments for AMS-analysis

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Cosmogenic 10Be and 26Al sample preparation at the University of Wollongong

Cited by 4 publications

References 55 publications

Magnitude and timing of transient incision resulting from large‐scale drainage capture, Sutlej River, Northwest Himalaya

Magnitude and timing of transient incision resulting from large‐scale drainage capture, Sutlej River, Northwest Himalaya

Impact of Quaternary Glaciations on Denudation Rates in North Pamir—Tian Shan Inferred From Cosmogenic 10Be and Low‐Temperature Thermochronology

A simple method of purifying authigenic 10Be from sediments for AMS-analysis

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Product

Resources

About

Impact of Quaternary Glaciations on Denudation Rates in North Pamir—Tian Shan Inferred From Cosmogenic ¹⁰Be and Low‐Temperature Thermochronology