The geology of Hong Kong

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Abstract
Summary: A revised succession for Hong Kong includes: marine Upper Palaeozoic and deltaic Lower Jurassic sediments, a series of acid volcanic rocks probably of Upper Jurassic to Lower Cretaceous age, a major intrusive cycle followed by continental Red Beds, post-Red Beds thrusting of mid-Tertiary(?) age, and late Tertiary fanglomerates. No evidence was found of a cycle of igneous activity of post-Red Beds age as previously claimed. The major intrusive complex is probably of Upper Cretaceous age and consists of: (Youngest) Dyke swarms (granite-porphyries and basic dykes), and associated types, Batholithic granite (Oldest) Sheets of quartz-porphyry. The activity which produced these intrusions probably took place beneath a land surface on or near the margin of a continental block.

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