Colluvial and alluvial sediment archives temporally resolved by OSL dating: Implications for reconstructing soil erosion

Fuchs, Markus; Fischer, Manfred M.; Reverman, Rebecca

doi:10.1016/j.quageo.2009.01.006

Cited by 48 publications

(26 citation statements)

References 21 publications

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“…Hillslope sediments provide a potentially valuable archive of contemporary and paleo-landscape processes (e.g. Fuchs and Lang, 2009;Fuchs et al, 2010). Dating of slope sediments has been extensively used for understanding landscape response to local and global climate change (e.g.…”

Section: Introductionmentioning

confidence: 99%

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Chronology and processes of late Quaternary hillslope sedimentation in the eastern South Island, New Zealand

Borella¹,

Quigley²,

Sohbati

et al. 2016

J Quaternary Science

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Optical and radiocarbon dating of loessic hillslope sediments in New Zealand's South Island is used to constrain the timing of prehistoric rockfalls and associated seismic events, quantify spatial and temporal patterns of landscape evolution, and examine hillslope responses to climatic and anthropogenic forcing. Exploratory trenches adjacent to prehistoric boulders enable stratigraphic analysis of loess and loesscolluvium pre-and post-boulder emplacement sediments. Luminescence ages from colluvial sediments constrain timing of boulder emplacement to between ~3.0 and ~12.5 ka, well before the arrival of Polynesians (c. AD 1280) and Europeans (c. AD 1800) in New Zealand. Three phases of colluviation are revealed at the Rapaki study site, reflecting natural and anthropogenic-driven shifts in sedimentation and landscape evolution. Sediment accumulation rates increased considerably (>15 factor increase) following human arrival and associated anthropogenic burning of hillslope vegetation. Phytolith results suggest paleo-vegetation at Rapaki was compositionally variable and persisted under a predominantly cool temperature environment with warm-temperate elements. Palm phytolith abundances imply maximum climate warming during early (~12-11 ka) and late (~3-2 ka) Holocene phases. This study provides insights into the spatial and temporal patterns of hillslope evolution, highlighting the roles of climate change, earthquakes, and humans on surface processes.Keywords: rockfall, paleoseismicity, hillslope response, OSL, radiocarbon 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 2 patterns of hillslope evolution, highlighting the roles of climate change, earthquakes, and humans on surface processes.

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Section: Introductionmentioning

confidence: 99%

“…Hanson et al, 2004), anthropogenic influences on hillslope sediment erosion and accumulation (e.g. Roering et al, 2002Roering et al, , 2004Fuchs et al, 2004Fuchs et al, , 2010Almond et al, 2008;Hughes et al, 2010;Borella et al, 2016), and tectonic activity (e.g. Fattahi et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Chronology and processes of late Quaternary hillslope sedimentation in the eastern South Island, New Zealand

Borella¹,

Quigley²,

Sohbati

et al. 2016

J Quaternary Science

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“…Soil mixing rates from ants and termites and small vertebrates range from 0.002 to 1.8 mm year −1 and 0.08 to 1.5 mm year −1 , respectively, whereas annual soil mixing rates from earthworms were recorded to be 0.5 to up to 10.6 mm year −1 (see Stockmann et al , 2011). Whilst its use is still limited (Wilkinson & Humphreys, 2005), single‐grain OSL has been used to investigate creeping soil (Heimsath et al , 2002), to study the effect of pedobioturbation (Heimsath et al , 2002; Bateman et al , 2003; Bush & Feathers, 2003; Wilkinson et al , 2005), to date Paleosols and loess (Priori et al , 2008), to understand evolution in young floodplains better (Lair et al , 2009) and to study soil erosion and deposition (Eriksson et al , 2000; Fuchs et al , 2010). Most of these studies used single‐grain OSL technique to estimate the ‘depositional’ age of soil layers to investigate the Quaternary history of the site.…”

Section: Introductionmentioning

confidence: 99%

Quantifying processes of pedogenesis using optically stimulated luminescence

Stockmann

Minasny

Pietsch

et al. 2013

European J Soil Science

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New analytical techniques have opened up the possibility of addressing rates of soil processes quantitatively. Here, we present the results of an investigation into the use of single‐grain optically stimulated luminescence (OSL) dating to derive rates of soil mixing in the top 50 cm of soil profiles from two toposequences situated in the Werrikimbe National Park in Australia. Of 500 single grains analysed from each sampled depth increment, less than 25% provided a finite age, with the rest of the grains either non‐responsive or dose‐saturated. This proportion of finite‐age grains tended to decrease with soil depth. Median ages of quartz grains increased down the soil profile, with topsoil ages of up to 500 years and subsoil ages of up to 5000 years. Few ‘younger’ grains were found deeper in the profile and few ‘older’ grains near the soil surface. These trends suggest that pedoturbation is resulting in vertical transport of grains through the profile, but that there is a distribution of transport distances, with a poor probability of large transport distances from surface to subsoil or vice versa compared with a more frequent movement of grains to and from the surface in the uppermost 10–35 cm. The calculation of a single age for each soil horizon was unachievable as each horizon contained a heterogeneous mixture of grains with varying histories of transport to and from the soil surface. Soil mixing was confirmed along both toposequences studied. However, the occurrence of minor mixing rates did not lead to a homogenization of the topsoil and adjacent horizons. We postulated that mixing velocities were mostly related to flora at our study site. Vertical soil mixing rates of 0.5 and 0.2 mm year−1 were calculated from the distribution of finite single‐grain ages.

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“…1c) and target the main representative near-surface stratigraphic units (Units 4e6). Similar to fluvial environments, partial bleaching might also be expected in alluvial environments (Olley et al, 1998Rittenour, 2008;Fuchs et al, 2010). Consequently, a modern-analogue OSL sample was collected from a small pit excavated 15 cm into the modern floodout (CF334) to assess the potential effects of partial bleaching on D e distributions.…”

Section: Methodsmentioning

confidence: 99%

All mixed up: Using single-grain equivalent dose distributions to identify phases of pedogenic mixing on a dryland alluvial fan

Gliganic

May

Cohen

2015

Quaternary International

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Colluvial and alluvial sediment archives temporally resolved by OSL dating: Implications for reconstructing soil erosion

Cited by 48 publications

References 21 publications

Chronology and processes of late Quaternary hillslope sedimentation in the eastern South Island, New Zealand

Chronology and processes of late Quaternary hillslope sedimentation in the eastern South Island, New Zealand

Quantifying processes of pedogenesis using optically stimulated luminescence

All mixed up: Using single-grain equivalent dose distributions to identify phases of pedogenic mixing on a dryland alluvial fan

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