Stratigraphy: Cretaceous stocks and dykes with an age of approximately 140.6 ± 0.3 million years before present.

Distribution: The D'Aguilar Quartz Monzonite crops out in the southern part of Hong Kong on D'Aguilar Peninsula, Stanley Peninsula, and Lamma Island.

Lithology: Porphyritic fine- to medium-grained quartz monzonite.

(Fine- to medium-grained quartz monzonite (D'Aguilar Quartz Monzonite), D'Aguilar Peninsula, southeastern Hong Kong Island)