Hong Kong Geology Guide Book Geotechnical Engineering Office ...

Plover Cove Reservoir, Northeast New Territories
Chapter 1. Oldest Rocks Exposed in Hong Kong – The Bluff Head Formation
Introduction
Devonian sedimentary rocks are the oldest strata exposed in Hong Kong. These rocks,
called the Bluff Head Formation, crop out mainly along the coast of Tolo Channel, in
particular, along the northern shore from Pak Sha Tau Chau to Bluff Head. The
sedimentary rocks include sandstones and siltstones, some of which are fossil-bearing,
conglomeratic sandstone and conglomerate.
An impressive exposure of the Bluff Head
Formation can be seen at Bluff Head, a
headland at the northeastern end of the Tolo
Channel. Over the long period since the
deposition of these sediments, the rock layers
have been tilted by earth movements so that
they now stand sub-vertically. The Bluff Head
Formation is also well-exposed near Pak Sha
Tau Chau at the southwestern tip of the Plover
Cove Reservoir. Sub-vertical Devonian Strata near Bluff Head
Route from Tai Mei Tuk to Pak Sha Tau
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