Late Holocene floodplain incision and alluvial fan formation in the central Grampian Highlands, Scotland: chronology, environment and implications

Ballantyne, Colin K.; Whittington, Graeme

doi:10.1002/(sici)1099-1417(199912)14:7<651::aid-jqs469>3.0.co;2-1

Cited by 53 publications

(21 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Ces cônes de déjection résultent d'écoulements torrentiels en nappe, d'écoulements hyperconcentrés ou d'écoulements intermédiaires entre les deux premiers types (Lafortune et al, 2006). En règle générale, les cônes formés par ces types de dépôts se forment rapidement lors d'orages violents (Harvey, 1986 ;Blair, 1987 ;Wells et Harvey, 1987 ;Ballantyne et Whittington, 1999 ;Blair, 1999 Location of the Lake Guillaume-Delisle area and of the two study sites. Place names mentioned in the text are also indicated.…”

Section: Région Et Sites D'étudeunclassified

Émersion des terres et développement des sols bien drainés au lac Guillaume-Delisle, Québec subarctique

Lafortune

Filion

Hétu

2007

gpq

View full text Add to dashboard Cite

Dans la région du lac Guillaume-Delisle, au Québec subarctique, des cônes de déjection d’âge et d’altitude variables se sont déposés tout au cours de l’Holocène sur des plages soulevées, offrant ainsi la possibilité d’étudier une chronoséquence holocène de sols. Le cadre temporel a été établi par la datation radiocarbone de 38 horizons organiques enfouis et la mise à jour de la courbe d’émersion des terres pour la région. L’émersion se serait effectuée selon un taux moyen de 5,6 m/siècle entre 8500 et 4500 années cal. BP et de 1,2 m/siècle après 4500 années cal. BP. Les analyses morphologiques et chimiques ont montré que les sols et paléosols subarctiques sableux, bien drainés et soustraits à l’influence des combes à neige, sont formés principalement par l’accumulation dans l’horizon B de matière organique humifiée combinée à de l’aluminium et du fer (podzolisation). L’enrichissement de l’horizon B en fer et en aluminium se fait lentement en suivant une fonction linéaire. La durée de pédogenèse requise pour obtenir le seuil minimal (Fep+Alp) de 0,4 % pour l’horizon Bf fixé par le Système canadien de classification des sols serait d’environ 12 400 années. Bien que théorique, cette durée indique à quel point les conditions nécessaires à la formation des podzols sont difficiles à réunir dans les sols subarctiques où la végétation demeure basse et le couvert nival peu épais.In the Lake Guillaume-Delisle area, alluvial fans of various ages and elevations were deposited throughout the Holocene over raised beach deposits, which allowed the studying of a subarctic soil chronosequence. The temporal framework is based on 38 14C dates obtained from buried organic soil horizons, and on an update of the Lake Guillaume-Delisle emersion curve. Postglacial uplift due to glacio-isostatic rebound occurred at a mean rate of 5.6 m/century from 8500 to 4500 cal. yr BP, and of 1.2 m/century after 4500 cal. yr BP. Soil morphology and chemistry showed that well-drained sandy soil and paleosoil development, when not influenced by late-lying snowpatches and snowmelt, is characterized by B horizons having a dominant accumulation product of amorphous material composed mainly of humified organic matter combined with Al and Fe (podzolisation). However, pedogenic development is weak and would take about 12 400 years to reach the minimum values of (Fep+Alp) ≥0,4% required for meeting the criteria of a Bf horizon in the Canadian system of soil classification, according to a linear function. Although theoretical, this value indicates that conditions required for Podzol formation are hard to reach in subarctic soils with low vegetation and thin snow cover

show abstract

Section: Région Et Sites D'étudeunclassified

Émersion des terres et développement des sols bien drainés au lac Guillaume-Delisle, Québec subarctique

Lafortune

Filion

Hétu

2007

gpq

View full text Add to dashboard Cite

show abstract

“…Perhaps the most important finding is that the accumulation of substantial debris cones may primarily reflect a very small number of localised, extreme storm events, and that such storms may represent the dominant formative events in some upland areas (cf. Ballantyne and Whittington, 1999). Moreover, although further dating of buried peats, palaeosols and depositional structures underlying drift slopes may yield a useful proxy record for reconstructing former single-disturbance meteorological events (cf.…”

Section: Discussionmentioning

confidence: 99%

“…Strachan, 1976;Innes, 1983aInnes, , 1985Ballantyne and Eckford, 1984;Ballantyne, 1986;Brazier et al, 1988;Brazier and Ballantyne, 1989;Tipping, 1995;Curry, 1998;Hinchliffe et al, 1998;Hinchliffe, 1999). Nevertheless, uncertainties concerning the precise timing and significance of this activity remain, and three hypotheses have been proposed to explain the causes of reworking of hillslope sediment in upland Britain during the latter half of the Holocene: the anthropogenic hypothesis, the climatic hypothesis, and the extreme event hypothesis (Ballantyne, 1991;McEwen, 1997;Ballantyne and Whittington, 1999).…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, physically based modelling of the role of climate, vegetation and pedogenesis on slope instability has suggested that recent failure and reworking of ancient drifts may partly reflect a gradual decline in slope stability as a result of progressive pedogenesis, and partly the influence of extrinsic triggers during the Holocene (Brooks, 1997;Brooks et al, , 1995Brooks andRichards, 1993, 1994). The effectiveness of extreme storm events in reworking hillslope sediments may be further conditioned by antecedent anthropogenic vegetation changes, such that all three hypotheses may be interlinked at some sites (Ballantyne and Whittington, 1999).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Holocene reworking of drift-mantled hillslopes in the Scottish Highlands

Curry

2000

J. Quaternary Sci.

View full text Add to dashboard Cite

“…Erosion is one of the most significant forms of land degradation (soil truncation, loss of fertility, slope instability), greatly influenced by land use and management [5,6] . Soil forming environments and erosion processes is a much-debated question when studying the relationship between human impact and environment change [7,8] . Agricultural land use is one of the most important factors that have shaped historic landscapes in Europe [9][10][11][12][13][14][15][16][17][18] .…”

Section: Introductionmentioning

confidence: 99%

Soil Erosion Prediction Based on Land Use Changes (A Case in Neka Watershed)

Solaimani¹,

Modallaldoust²,

Lotfi³

2009

American J. of Agricultural and Biological Sciences

View full text Add to dashboard Cite

Problem statement: Land use change has transformed a vast part of the natural landscapes of the developing world for the last 50 years. Land is a fundamental factor of production and though much of the course of human history, it has been tightly coupled with economic growth. Soil erosion by water is one of the most important land degradation processes in the Mediterranean basins. The unplanned land use change within and near a fast growing agricultural land in Neka River Basin, led to an accelerated erosion of soil in the area. Approach: This study aims to find the relationships between land use pattern, erosion and the sediment yield in the study area. The land use coefficient (Xa) has applied in the model of Erosion Potential Method (EPM) to forecast the effect of the land type to reduce the erosion. Land cover and land use change was projected for the next decade using topography, geology, land use maps and remote sensing data of the study area. Results: The results of this study indicated that the total sediment yield of the study area has notably decreased to 89.24% after an appropriate land use/cover alteration. The estimated special erosion for the Southern Neka Basin is about 144465.1 m 3 km −2 where after management policy is predicted 15542.9 m 3 km −2 year −1 , therefore the total difference for the study area has estimated about 128922.2 m 3 km −2 year −1 . Conclusion:The land use changes assessed among the different land cover classes. It is important to mention that conducting of the present study a very severe land cover changes taken place as the result of agricultural land development. These changes in land cover led to the forest degradation of the study area. Relationship between land-use changes and agricultural growth offered a more robust prediction of soil erosion in Neka watershed.3

show abstract

Late Holocene floodplain incision and alluvial fan formation in the central Grampian Highlands, Scotland: chronology, environment and implications

Cited by 53 publications

References 40 publications

Émersion des terres et développement des sols bien drainés au lac Guillaume-Delisle, Québec subarctique

Émersion des terres et développement des sols bien drainés au lac Guillaume-Delisle, Québec subarctique

Holocene reworking of drift-mantled hillslopes in the Scottish Highlands

Soil Erosion Prediction Based on Land Use Changes (A Case in Neka Watershed)

Contact Info

Product

Resources

About