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Characterisation of the weathering profile developed over a porphyritic biotite granite in peninsular Malaysia

Caractérisation du profil d'altération développé sur un granite porphyrique à biotite (Malaisie)

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Abstract

Nine stages of weathering of a porphyritic biotite granite bedrock material have been distinguished on the basis of differences of colour, texture and the extent of alteration of mineral grains. Determination of the distribution pattern of the different stabes of weathering of bedrock material within the weathering profile then allowed for recognition of six stages of weathering of the bedrock considered on the scale of the mass.

Characterisation of the weathering profile over the prophyritic biotite granite bedrock thus involved recognition and definition of weathering of the bedrock, both on the scale of the hand specimen, i.e. as rock material, and on the scale of the mass, i.e. as rock mass.

Résumé

Neuf stades d'altération d'un substratum rocheux en granite porphyrique à biotite sont distingués sur la base de différences de couleurs, de texture, et de l'étendue de l'altération des minéraux. La détermination de la distribution de ces différents stades d'altération à l'intérieur du profil, a permis la reconnaissance de six stades d'altération du substratum considérée à l'échelle du massif.

La caractérisation du profil d'altération au-dessus du rocher granitique implique ainsi la reconnaissance et la définition de l'altération à la fois à l'échelle de l'échantillon, à savoir la roche, et à l'échelle de la mase, à savoir le massif rocheux.

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Authors and Affiliations

  1. Department of Geology, University of Malaya, 22-11, Kuala Lumpur, Malaysia

    J. K. Raj

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  1. J. K. Raj
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Raj, J.K. Characterisation of the weathering profile developed over a porphyritic biotite granite in peninsular Malaysia. Bulletin of the International Association of Engineering Geology 32, 121–129 (1985). https://doi.org/10.1007/BF02594775

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