Surface Stone Movement and Scree Formation

  title={Surface Stone Movement and Scree Formation},
  author={Mike J. Kirkby and Ian Statham},
  journal={The Journal of Geology},
  pages={349 - 362}
The accumulation of rockfall talus slopes has been studied for conditions in which stones are added relatively slowly, so that dynamic interactions between them may be ignored, and stone movements modeled "one-at-a-time." Laboratory scale models (1 m long) are compared with the results of mathematical and computer simulation. Mathematical analysis assumes that stone movement down the talus is equivalent to a "sliding-only" movement, and laboratory results support this assumption. Grain-size… Expand
Properties of talus slopes composed of flat blocks
Many areas at the foot of steep overhangs are subject to periodic rock falls which form abundant stone accumulations, called taluses. Taluses are relatively common formations that may occur at ratherExpand
Simulation of scree‐slope dynamics: investigating the distribution of debris avalanche events in an idealized two‐dimensional model
We present a two-dimensional model of the development of scree slopes using the discrete-element method. We concentrate on the dynamics of the accumulating debris at the cliff foot rather than on theExpand
Field experiments on the transport of rock fragments by animal trampling on scree slopes
Qualitative observations in an area with steep scree slopes in Turkey suggested that trampling by goats and sheep may contribute significantly to the downslope movement of rock fragments in theseExpand
A scree slope rockfall model
Certain observed characteristics of scree slopes; namely concavity of profile, straight slope angle less than the angle of repose, and good size sorting of particles, are not consistent with an angleExpand
Modeling the evolution of natural cliffs subject to weathering: 2. Discrete element approach
The evolution of slopes subjected to weathering has been modeled by assuming Mohr-Coulomb behavior and by using a numerical approach based on the discrete element method (DEM). According to thisExpand
Structure, sedimentology and evolution of rockfall talus, Mynydd Du, south Wales
Gullies incised into relict rockfall talus slopes at Mynydd Du (south Wales) reveal stacked debris flow and slopewash deposits occasionally intercalated with buried peaty soils, reflecting episodicExpand
Hillslope Processes: Mass Wasting, Slope Stability and Erosion
This chapter describes the dominant types of processes present on hillslopes where both gravity and running water are active. The impact of natural hillslope processes is important and is currentlyExpand
Structural and thermal controls of rockfall frequency and magnitude within rockwall–talus systems (Swiss Alps)
Both from a systemic and natural hazard perspective, it is essential to understand the causes and frequency of rockfalls in mountain terrain and to predict the block sizes deposited at specificExpand
Characteristics and evolution of two relict talus slopes in Scotland
Abstract Vegetation‐covered relict talus slopes are widespread at the base of glacially steepened rockwalls in Scotland. Investigations carried out on two such slopes, one in the An Teallach massifExpand
Small-scale experimental simulation of talus evolution.
We investigated a small-scale laboratory model of a talus slope evolution. Five different size classes of basaltic rock were selected and marked with different colours. Homogenized mixtures of grainsExpand


Scree Slope Development under Conditions of Surface Particle Movement
This paper examines the characteristics of slope form and material sorting which develop when a scree is subject to regrading only by the movement of individual blocks immediately after falling onExpand
Debris-Covered Hillslopes of the Southern Arizona Desert: Consideration of Their Stability and Sediment Contribution
The various processes that affect hillslopes in the Sonoran Desert of southern Arizona vary considerably in relative importance, depending upon elevation (and hence climate), angle of slope, and theExpand
Earlier studies of factors determining subaerial angles of repose of loose material have produced diverse results. In order to obtain dependable information for use in geomorphic investigations aExpand
Entry on "talus
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