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The Geology of Hong Kong (Interactive On-line)
Lai Chi Chong Formation - Jll


Lai Chi Chong Formation - Jll


Stratigraphy: Jurassic volcanic rocks with an age of approximately 146.6 ± 0.2 million years before present.


Distribution: The Lai Chi Chong Formation crops out north of the Chek Keng Fault in the northeastern New Territories.


Lithology: Dominantly coarse ash crystal tuff with intercalated mudstone, tuffaceous sandstone, rhyolite lava and minor conglomerate.


Flame structures in the Lai Chi Chong Formation

(Flame structures in the Lai Chi Chong Formation, Lai Chi Chong, northeastern New Territories)


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