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The Geology of Hong Kong (Interactive On-line)
Yuen Long Formation - Csy


Yuen Long Formation, Csy


Stratigraphy: Carboniferous metamorphosed sedimentary rocks with ages ranging from approximately 354 to 280 million years before present.


Distribution: The rocks of Yuen Long Formation do not occur at outcrop, but have been penetrated in boreholes, principally in the Yuen Long and Ma On Shan areas.


Lithology: The Yuen Long Formation consists of white to dark grey or black calcite and dolomite marble.


Depositional Environment: The Yuen Long Formation is interpreted as having been originally deposited as a pure to slightly impure limestone in a shallow water platform setting.




(Grey to dark grey, fine-grained dolomitic marble of the Long Ping Member, Yuen Long Formation)


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