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Residual soils of Hong Kong

Authored by: Charles W.W. Ng , J. Xu

Handbook of Tropical Residual Soils Engineering

Print publication date:  May  2012
Online publication date:  May  2012

Print ISBN: 9780415457316
eBook ISBN: 9780203098325
Adobe ISBN:


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Hong Kong is a mountainous city subject to subtropical climate conditions. Figure 9.1 shows a geological map of Hong Kong that illustrates the distributions of rock types (Irfan, 1996). The predominant rock types in Hong Kong are Mesozoic volcanic rock and granite, which constitute about 85% of rock outcrop on the island (Sewell et al., 2000). The volcanic rocks include tuffs, tuffites, lavas and sedimentary rocks. They occupy about 50% of the surface area of Hong Kong. Intrusive igneous rocks, which comprise mainly granite and granodiorite, account for about 35% of the surface area of Hong Kong. A detailed classification and description of the volcanic and granitic rocks in Hong Kong is given by Sewell et al. (2000).

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