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6 results for “Sediment provenance”
Dataset for manuscript Tracing Quartz Provenance: A Multi-Disciplinary Investigation of Luminescence Sensitisation Mechanisms of Quartz from Granite Source Rocks and Derived Sediments
<p><span>Quartz optically stimulated luminescence (OSL) sensitivity as well as some electron spin resonance (ESR) and cathodoluminescence (CL) signals have been empirically proposed as provenance indicators. Sensitivity is defined as luminescence emitted in response to a given dose per unit mass. While it is largely believed to be acquired by earth surface processes, recent studies bring evidence that sensitisation processes depend on source geology.</span></p> <p><span>Here we combine OSL and thermoluminescence (TL), ESR and CL analyses to understand the mechanisms of quartz OSL sensitisation. We investigate granites and their derived sediments from catchments draining simple lithologies of known age that display contrasting OSL sensitisation behaviour both in nature and during irradiation and light exposure laboratory experiments. The sample displaying increased OSL sensitisation is characterised by TL emission at intermediate temperatures (150-250 °C), Ti-related signals in CL, and Ti and Ge lithium compensated signals in ESR. <span>The insensitive samples either lack or exhibit very weak such characteristics and contain several times less amount of trace titanium measured by </span></span><span>laser ablation inductively coupled plasma mass spectrometry (</span><span>LA-ICP-MS).</span></p> <p><span>We demonstrate that the OSL sensitisation results as an effect of the existence of certain defects and impurities in the quartz crystal in the parent rock, such as titanium and germanium. However, the degree of sensitisation reached in nature is significantly higher than in the laboratory. <span> </span>As such, the existence of this precursor represents the potential for sensitisation, which can later be amplified by environmental factors during sedimentary history.</span></p>
Sr-Nd isotopic fingerprints of Red River sediments and its implication for provenance discrimination in the South China Sea
<p>Supplementary Data of the Manuscript titled 'Revisit Sr-Nd isotopic fingerprints of Red River sediments and its implication for provenance discrimination in the South China Sea'</p> <p>Table A1. elemental compositions of Red River estuarine sediment samples</p> <p>Table A2. Literature data on sediment Sr-Nd isotopic ratios, Rb/Sr and K<sub>2</sub>O/(Na<sub>2</sub>O+CaO) in the Red River catchment</p> <p>Table A3. Compiled data on Sr-Nd isotopic compositions of rocks in the Thao River, Song Da and Song Lo basin</p> <p>Table A4. Compiled data of sediment Sr-Nd isotopic composition in the Pearl River, Red River and Mekong River</p>
Data for Intra-seasonal variability in sediment provenance and transport processes in the Brahmaputra basin
<p>No description provided.</p>
Dataset: Geochemical - mineralogical constraints on the provenance of sediment supplied from South African river catchments draining into the southwestern Indian Ocean
<p>Supplementary Information Table 1 from manuscript in AGU <span>Geochemistry, Geophysics, Geosystems, titled</span>: Geochemical - mineralogical constraints on the provenance of sediment supplied from South African river catchments draining into the southwestern Indian Ocean.</p> <p>Pryor, E.J<span>1,†*</span>; Hall, I.R<span>1</span>; Simon, M.H<span>2,3</span>; Andersen, M<span>1</span>; Babin, D<span>4</span>; Starr, A<span>5</span>; Lipp, A<span>6</span>; van der Lubbe, H.J.L<span>7</span></p> <p><span>1</span>Cardiff University, School of Earth and Environmental Sciences, Main Building, United Kingdom</p> <p><span>2</span>NORCE Norwegian Research Centre, Bjerknes Centre for Climate Research, Bergen, Norway</p> <p><span>3</span> SFF Centre for Early Sapiens Behaviour (SapienCE), Bergen, Norway</p> <p><span>4</span><span>Lamont-Doherty </span>Earth Observatory of Columbia University, 61 Rt 9W, Palisades, New York 10964-8000, USA</p> <p><span>5</span>Department of Geography, University of Cambridge, United Kingdom</p> <p><span>6</span>Department of Earth Sciences, University College London, United Kingdom</p> <p><span>7</span>Department of Earth Sciences, Cluster Geochemistry & Geology, Vrije Universiteit Amsterdam</p> <p>(VU).</p> <p>†Now at Department of Earth Sciences, University of Bergen, Norway; SFF Centre for Early Sapiens Behaviour (SapienCE), Bergen, Norway</p> <p>*Corresponding author: Ellie Pryor (ellie.pryor@uib.no)</p> <p>This table provides the bedrock geology data for each river catchment between Durban and Cape Town, South Africa which was required for the endmember mixing model discussed in the submitted manuscript. This data can be used for endmember mixing calculations or used for GIS mapping. </p> <p>We also provide the grain size data measured on a Sympatec HELOS KR laser diffraction particle sizer. This grain size was inputted into the grain size endmember mixing model Analysize package within MATLAB 2022b (from Paterson and Heslop, 2015).</p>
Supplementary materials for "Geochemistry of the Caeté estuary sediments in the Southeast Amazon Coastal Zone: Insights on provenance and weathering over the past 150 years"
<p><span>This file contains the supplementary materials, both original and reference data, referenced in the paper entitled “Geochemistry of the Caeté estuary sediments in the Southeast Amazon Coastal Zone: Insights on provenance and weathering over the past 150 years”. This paper is submitted for consideration in Continental Shelf Research.</span></p>
Data from: Holocene Sediment Provenance Evolution in the Northern South China Sea Inferred from Detrital Zircon Geochronology
<p>The supporting information here provides the AMS <sup>14</sup>C geochronological data of core sediments (Table S1) and LA-ICP-SF-MS U-Pb results of detrital zircon grains (Table S2) within this study.</p>
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