Assessing the significant factors in a rock weathering system

Hill, S.; Rosenbaum, M. S.

doi:10.1144/gsl.qjeg.1998.031.p2.02

Cited by 20 publications

(10 citation statements)

References 11 publications

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“…Another first-order process that has an influence on strength reduction, and thus on damage process, is weathering controlled by climatic and fluids circulations (Hill & Rosenbaum 1998;Hall & André 2001;Pellegrino & Prestininzi 2007). It also has a strong control on the failure process, especially in the case of granitic rocks in the Alps (Girod 1999;Jaboyedoff et al 2004).…”

Section: Mechanical Processes At the Slope Scalementioning

confidence: 99%

Paraglacial gravitational deformations in the SW Alps: a review of field investigations,¹⁰Be cosmogenic dating and physical modelling

Bedoui¹,

Bois

Jomard

et al. 2011

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Catastrophic deep-seated landslides (DSL) are generally considered to be the result of large slope deformations also known as deep-seated gravitational slope deformation (DSGSD). This paper aims to build a synthesis of multiple studies made in the Tinée Valley (southern French Alps) to assess the geometrical, kinematical, mechanical and chronological relationships between these two gravitational processes.At the scale of the valley, data issued from geological, geomorphological and 10 Be dating indicate a clear geometrical link between DSGSD and DSL occurring at the base of the slope and suggest that gravitational slope evolution began after the glacial retreat (13 ka BP). This is supported by the example of the well-documented La Clapière slope. A continuous evolution process is characterized geometrically and temporally from geomorphic observations and analogue modelling. Coupling structural, geomorphological, physical and chronological studies allowed us to propose a four-dimensional (4D) deformation model mechanically correlated with progressive failure concept. The validity and variability of this reference site are discussed at the valley scale (taking Isola and Le Pra slope deformation as examples).It allows a rough estimation of the state of slope deformation at the valley scale to be constructed and the slope evolution with time to be considered. This 4D model could then be considered as a reference for other deep-seated gravitational slope deformations in comparable Alpine valleys.

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Section: Mechanical Processes At the Slope Scalementioning

confidence: 99%

Paraglacial gravitational deformations in the SW Alps: a review of field investigations,¹⁰Be cosmogenic dating and physical modelling

Bedoui¹,

Bois

Jomard

et al. 2011

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“…The most important seems to be the weathering and alteration caused by climatic factors and fluid circulation within the massif and dependent on the physicochemical and mechanical properties of the rock (Hill and Rosenbaum, 1998;Hall and André, 2001;Pellegrino and Prestininzi, 2007). Both weathering and alteration cause a progressive time-softening (strength reduction) of the superficial horizons.…”

Section: Introductionmentioning

confidence: 99%

Numerical modelling of the gravity-induced destabilization of a slope: The example of the La Clapière landslide, southern France

Chemenda¹,

Bois²,

Bouissou³

et al. 2009

Geomorphology

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“…In the present study, the bedrock types were grouped according to their fresh Clay content and its variation through the weathering profile have a particularly significant effect on groundwater vulnerability and erosional processes (Aller et al 1987, Hill andRosenbaum 1998). In this regard, lithological groups B, X, and Bx give rise to predominantly clayey weathered materials that are likely to provide greater attenuation capacity and reduced hydraulic accessibility to the saturated zone.…”

Section: Bedrock Lithologymentioning

confidence: 97%

Geo-environmental mapping using physiographic analysis: constraints on the evaluation of land instability and groundwater pollution hazards in the Metropolitan District of Campinas, Brazil

Fernandes-da-Silva¹,

Vedovello²,

Ferreira³

et al. 2010

Environ Earth Sci

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Geo-environmental terrain assessments and territorial zoning are useful tools for the formulation and implementation of environmental management instruments (including policymaking, planning, and enforcement of statutory regulations). They usually involve a set of procedures and techniques for delimitation, characterisation and classification of terrain units.However, terrain assessments and zoning exercises are often costly and time-consuming, particularly when encompassing large areas, which in many cases prevent local agencies in developing countries from properly benefiting from such assessments. In the present paper, a low-cost technique based on the analysis of texture of satellite imagery was used for delimitation of terrain units. The delimited units were further analysed in two test areas situated in Southeast Brazil to provide estimates of land instability and the vulnerability of groundwater to pollution hazards. The implementation incorporated procedures for inferring the influences and potential implications of tectonic fractures and other discontinuities on ground behaviour and local groundwater flow. Terrain attributes such as degree of fracturing, bedrock lithology and weathered materials were explored as indicators of ground properties.The paper also discusses constraints on-and limitations of-the approaches taken.

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Assessing the significant factors in a rock weathering system

Cited by 20 publications

References 11 publications

Paraglacial gravitational deformations in the SW Alps: a review of field investigations,¹⁰Be cosmogenic dating and physical modelling

Paraglacial gravitational deformations in the SW Alps: a review of field investigations,¹⁰Be cosmogenic dating and physical modelling

Numerical modelling of the gravity-induced destabilization of a slope: The example of the La Clapière landslide, southern France

Geo-environmental mapping using physiographic analysis: constraints on the evaluation of land instability and groundwater pollution hazards in the Metropolitan District of Campinas, Brazil

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Assessing the significant factors in a rock weathering system

Cited by 20 publications

References 11 publications

Paraglacial gravitational deformations in the SW Alps: a review of field investigations,10Be cosmogenic dating and physical modelling

Paraglacial gravitational deformations in the SW Alps: a review of field investigations,10Be cosmogenic dating and physical modelling

Numerical modelling of the gravity-induced destabilization of a slope: The example of the La Clapière landslide, southern France

Geo-environmental mapping using physiographic analysis: constraints on the evaluation of land instability and groundwater pollution hazards in the Metropolitan District of Campinas, Brazil

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Paraglacial gravitational deformations in the SW Alps: a review of field investigations,¹⁰Be cosmogenic dating and physical modelling

Paraglacial gravitational deformations in the SW Alps: a review of field investigations,¹⁰Be cosmogenic dating and physical modelling