Close-up of medium-grained pink granite at Ngai Tau, Lamma Island, intruded by a fine-grained, light grey rock.
The low-lying area of Kowloon, composed of weathered granite, is flanked to the north by a ridge of resistant volcanic rock and granite."
A gorgeous mountain range formed by tilted layers of sedimentary rocks along the Pat Sin Leng Trail, which creates a steep cliff on one side, and a gentle slope on the other. The rocks comprise boulders and cobbles carried along with sand and silt in rivers 100 million years ago.
Sharp Peak and the coast at Tai Long Wan, eastern New Territories.
A pile of loose boulders at the base of a low hill topped by granite tors on Tai A Chau, Soko Islands.
A quartz sandstone arch in Tai O stubbornly resists the perennial onslaught of weathering and erosion.
Red iron staining in sandstone at Tai O, Lautau Island.
A crystal-rich dyke with irregular and straight margins near Discovery Bay, Lantau Island.
This masterpiece of abstract painting occurs on Tai Tsan Chau, Eastern New Territories, where iron-stained joints cross dark and light grey layers of mudstone.
Looking northeast along the strike of the Tai Lam Fault, western New Territories.
Yuen Long is built on a wide, fertile river flood plain and reclaimed mudflats.
Sweeping curves of a meandering stream on the Yuen Long plain.
Low granite cliffs on the Fan Lau peninsula, Lantau Island; the higher hills in the background are composed of volcanic rock.
The tops of columnar joints in the High Island Formation, North Nine Pin Island.
Resembling the honeycomb of giant bees, cooling and shrinkage of hot volcanic ash formed these spectacular six-sided columns on North Ninepin Island, after a volcano near Sai Kung erupted violently about 140 million years ago.
Close-up of the six-sided columns on the Nine Pin Islands.
The flowing lines of Ping Chau's rock platforms are a great attraction for enthusiasts of landscape photography. The thin layers of delicately coloured and gently tilted rocks were deposited as mud and silt on the bottom of a lake.
Close-up of extremely thin rock layers on Ping Chau; each layer was deposited in a single year.
Light-coloured chert beds within thinly-bedded red siltstone of the Ping Chau Formation, Ping Chau.
Wave-cut platform, Ping Chau.
Sand and gravel carried by a river onto a vast floodplain 400 million years ago were transformed into sandstone, with cobbles of white quartz, now found on Harbour lsland, Tolo Harbour.
Presence of angular blocks in a volcanic rock near Shek Lung Kung.
Steep cliffs and narrow caves in columnar-jointed volcanic rocks on Fu Tau Fan Chau, eastern New Territories.
Sea arches on Fu Tau Fan Chau, eastern New Territories.
Highly indented section of coastline, Fu Tau Fan Chau (Town Island), eastern New Territories.
Eroded fault forming a distinctive notch in the ridge line at the eastern end of Kat O Chau, northeastern New Territories.
Mudflats with mangroves, and tidal channels, Deep Bay.
Anderson Road quarry in eastern Kowloon on the western flanks of Tai Sheung Tok.
Weathered blocks of granite on a hill top near Lo Fu Tau, Lantau Island.
Large reclamation platform in west Kowloon.
Composite mafic-felsic (dark rock) dyke, Sung Kong Island.
Upstanding volcanic rocks of western Hong Kong Island overshadow the weathered granites that underlie Victoria Harbour.
Remnants of old sea stacks at Kang Lau Shek, Ping Chau.
Alluvial and estuarine deposits, Kuk Po, northeast New Territories.
Red conglomerate on Port Island composed of boulders, cobbles and gravel of volcanic rock, mudstone, sandstone and quartz.
Tilted, layers of red sandstone, mudstone and conglomerate form the cliffs around Port Island.
Network of calcite veins in red sandstone on Port Island.
A row of eroded sea stacks on Port Island.
Narrow river plain and crescent-shaped beach on Double Island, northeastern New Territories.
Resistant layers of volcanic rock at Ngong Ping, Lantau Island.
Rounded boulders of granite buffeted by waves form a storm beach at Tung O Wan, Lamma Island. The beach was created by strong waves that have eroded the granite coastline.
Two low granite islands connected by a sandy beach, Cheung Chau.
Steep erosion gullies in weathered granite, near Castle Peak.
Deeply weathered and eroded granite hills in the Castle Peak area, western New Territories.
Major landslide trail below Castle Peak, western New Territories.
Bird's eye view of the wave-cut platform surrounding Tsing Chau, northeastern New Territories.
Irregular quartz veins at this site on Lamma Island simulate the flowing characters of ancient Chinese calligraphy.
Coastal landslide, northeast Lamma Island.
Irregular quartz veins on Lamma Island.
Cliff face at Ping Fung Shan created by dipping layers of sandstone that lie parallel to the ridge top.
Deep Bay Fault dipping steeply towards the northwest, Lau Fau Shan, northwestern New Territories.
The invisible hand of nature created this beautiful granite sculpture at Hoi Sham Park, To Kwa Wan, Kowloon.
Columnar jointing in the cliffs east of High Island Reservoir, eastern New Territories.
Holocene river plain sediments (alluvium), Fanling Plain.
Granite quarry at Sok Kwu Wan, Lamma Island.
Ancient volcanic lake deposits at Lai Chi Chong, Tolo Channel, feature a kaleidoscopic pattern of colours and textures. The layers of grey sandstone, dark grey siltstone and orangish volcanic rock have been folded by post-depositional events.
Thin layers of light and dark coloured mudstone and sandstone at Lai Chi Chong.
View of Needle Hill looking north toward Tai Mo Shan. The former Needle Hill Mine workings are just visible in the centre left of the photograph, in a prominent valley draining into the Lower Shing Mun Reservoir.
A brown weathering crust partially covering white sandstone on Ma Shi Chau, Tolo Channel.
Well-developed kink-bands in siltstone of the Tolo Harbour Formation, Ma Shi Chau, northeastern New Territories.
Steep, seasonal stream channels on Ma On Shan.
The prominent angular peak of Ma On Shan, capped by resistant volcanic rock.
View of the southern slopes of Ma On Shan showing the area of disturbed ground in the vicinity of the former Ma On Shan mine workings.
Small island of Chap Mo Chau encircled by a wave-cut platform, northeastern New Territories.
Shum Wan Road landslide, Aberdeen, Hong Kong Island on 13th August, 1995.
Pitted and fluted surfaces on granite boulders at Chung Hom Kok, Hong Kong Island.
Layers of volcanic rock cut by numerous vertical joints, Sharp Peak, eastern New Territories.
Walkers on the MacLehose Trail near the High Island East Dam will see these curved six-sided columns of volcanic rock. Bending created an opening for molten rock to enter forming a dyke (dark grey).
Sea cliffs at Bluff Head, Tolo Channel, formed of steeply tilted layers of light grey sandstone and red mudstone.
Folded Devonian age rocks at Bluff Head, northeastern New Territories.
This may look like an ancient Egyptian stone-carving but actually contains the cores of irregularly shaped joint blocks of fresh rock exposed by weathering at Kau Sai Chau, eastern New Territories.
Lion Rock composed of resistant granite, north Kowloon.
Intersecting joint sets and flat joint faces exposed in low granite cliffs on Beaufort Island, Po Toi Islands.
Like the fingers of a praying hand, these granite slabs perch precariously on the top of Po Toi Island.
A series of dark coloured dykes intruded along two joint sets at Tai Kok Tau, Po Toi Island.
Slab-like sheet joints in the Po Toi Granite.
Boulders of volcanic rock below Lantau Peak, southern Lantau Island.
Multiple landslides on the southern flank of Lantau Peak, Lautau Island.
Curved quartz veins in sandstone at Fung Wong Wat, Tolo Channel.
Close-up of a volcanic rock on Ap Lei Chau, containing elongate fragments of greenish grey pumice.
What looks like a mammoth beast drinking from the sea off Ap Chau, Northeast New Territories, is in fact a natural arch eroded by the sea into a rock consisting of cobbles and boulders cemented together.
A reverent volcanic rock pays homage to Buddha on Lantau. Thin layers of ash were deposited by eruptions from a volcano near Nei Lak Shan about 146 millon years ago.
Po Shan Road landslide, Mid-levels, Hong Kong Island on 18th July, 1972.
Rounded quartz monzonite blocks near Lo Kei Wan, Lantau Island.