Laser granulometry of Holocene estuarine silts

The Holocene estuarine silts of the Severn Estuary Levels (southwest Britain) are representative of their kind in northwest Europe. They contain two broad types of plant material: particles codeposited with mineral grains from the estuarine water body, and extraneous debris (stems of indigenous prior plants; post depositional root matter) which is difficult to remove completely by physical means. Treatment with hydrogen peroxide before laser granulometry removes all plant material regardless of kind, drastically reduces values for the mean grain size and median size relative to untreated samples, but has little effect on the mode, except for a restricted group of bimodal-platykurtic, medium-coarse silts. It is concluded that, in the case of sediments of the general kind examined, no advantages acrue from the treatment of samples with hydrogen peroxide prior to analysis. Although a discrete rather than continuous variable, values of the mode obtained from untreated sediments are suggested to be acceptable for most purposes where a measure of central tendency is required

Estuary · Geomorphology · Granulometry · Holocene · Hydrogen peroxide · Mineralogy · Sediment · Sedimentary depositional environment · Chemistry · Environmental Science · Geochemistry and Geologic Mapping · Geological formations and processes · Geology and Paleoclimatology Research · Geology · Oceanography

• Past vegetation and hydrological change since the Middle Holocene in a Lake Erie riparian marsh provide a guide for ecosystem restoration

  Open Access•Cecilia Cordero Oviedo, Amanda L Loder et al.•Quaternary Research•2026

  Incluir item

• A multiproxy approach to address signals of MIS 2 climate fluctuations using loess–palaeosol sequences along a slope transect at Langenlois (lower Austria)

  Open Access•Svenja Ohler, Frank Lehmkuhl et al.•Quaternary Research•2026

  Incluir item

• Meso-scale barrier estuary disturbance, response and recovery behaviour

  Open Access•D W Clarke, Joan Boyle et al.•The Holocene•2014

  Incluir item

• The MIS 3/2 transition in a new loess profile at Krems-Wachtberg East – A multi-methodological approach

  Open Access•Simon Meyer-Heintze, Tobias Sprafke et al.•Quaternary International•2018

  Incluir item

• Landscape instability at the end of MIS 3 in western Central Europe

  Open Access•Peter Fischer, Ulrich Hambach et al.•Quaternary International•2019

  Incluir item

• Lateglacial–Holocene environments and human occupation in the Upper Lena region of Eastern Siberia derived from sedimentary and zooarchaeological data from Lake Ochaul

  Open Access•Franziska Kobe, Philipp Hoelzmann et al.•Quaternary International•2022

  Incluir item

• Annual textural banding in Holocene estuarine silts, Severn Estuary Levels (SW Britain)

  Open Access•J R L Allen•The Holocene•2004

  Incluir item

• Seasonality of δ 13 C and C/N ratios in modern and mid-Holocene sediments in the Severn Estuary Levels, SW Britain

  Open Access•J R L Allen, Angela L Lamb et al.•The Holocene•2007

  Incluir item

• Holocene sea-level change in the Severn Estuary, southwest England

  Open Access•Tom Hill, Thomas C B Hill et al.•The Holocene•2007

  Incluir item

• Hydrogen peroxide treatment effects on the particle size distribution of alluvial and marsh sediments

  Open Access•Andrew B Gray, G B Pasternack et al.•The Holocene•2010

  Incluir item

• Stable carbon isotopes as potential sea-level indicators in salt marshes, North Carolina, USA

  Open Access•Andrew C Kemp, Christopher H Vane et al.•The Holocene•2010

  Incluir item

• Buried salt-marsh edges and tide-level cycles in the mid-Holocene of the Caldicot Level (Gwent), South Wales, UK

  Open Access•J R L Allen, Simon K Haslett•The Holocene•2002

  Incluir item

• The last 3000 years in the Ría de Vigo (NW Iberian Margin)

  Open Access•Paula Diz, Guillermo Francés et al.•The Holocene•2002

  Incluir item

• A multi-proxy limnologic record of rapid early-Holocene hydrologic change on the northern Great Plains, southwestern Saskatchewan, Canada

  Open Access•William M Last, Robert E Vance et al.•The Holocene•1998

  Incluir item

• Holocene environmental change in the inner Severn estuary, UK

  Open Access•R Hewlett, J Bimie•The Holocene•1996

  Incluir item

• Separating eustatic from local environmental effects

  Open Access•Roberto Bao, Maria da Codnceição Freitas et al.•The Holocene•1999

  Incluir item

• The Late Holocene Evolution of Denge Marsh, Southeast England

  Open Access•Andrew J Plater•The Holocene•1992

  Incluir item

• Rapid coastal change during the mid- to late Holocene

  Open Access•C D Spencer, Chris Spencer et al.•The Holocene•1998

  Incluir item

• Coastal and Estuarine Environments

  Paul Goldberg, Paul W Goldberg•American Journal of Archaeology•2002

  Incluir item