Abstract

Cheung Chau island, located between Hong Kong island and the mainland of China, is composed chiefly of granite cut by granite porphyry and dolerite dikes trending east-northeast-west-southwest. Jointing in the granite is practically vertical; later shearing shows an east-northeast trend; still later faulting trends north-south. The island is in the process of emergence, as indicated by the rock platforms, raised beaches, and rejuvenated rivers. The evolution of the coast is discussed and related to the structure.

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