Stratigraphy: Cretaceous intrusive rocks interpreted to have been emplaced no older than approximately 140 million years before present.

Distribution: The Po Toi Granite forms a subcircular pluton centred on the southeastern tip of Hong Kong Island.

Lithology: Megacrystic coarse-grained to equigranular fine-grained biotite granite.

(Megacrystic, medium-grained Po Toi Granite, southern Po Toi)