Stratigraphy: Jurassic intrusive rocks with age of approximately 159.3 ± 0.3 million years before present.

Distribution: The Tai Lam Granite forms a large subcircular pluton in the northwestern New Territories, extending as far north as Yuen Long, east to Tsuen Wan, south to Lantau Island, and west to Castle Peak.

Lithology: Porphyritic medium-grained to equigranular fine-grained leucogranite.

(Equigranular, fine-grained Tai Lam Granite, Lam Tei, western New Territories)