Bremaer Hill

Bremaer Hill is located in North Point district.  You can take any bus to Bremaer Hill Bus Terminus and then walk through a narrow footpath beside St. Joan of Arc College.  After several minutes, you can reacn the junction to Sir Cecil's Ride.  If you walk eastward, you can reach Tai Koo and Kornhill areas.  Along Sir Cecil's Ride, you are able to see different forms of weathering and erosion.

Bremaer Hill is mostly made up of granite, which is easily weathered under the hot and humid climate in Hong Kong.  Rain dissolves carbon dioxide in the air and forms weak carbonic acid.  It then penetrates down the ground surface through joints of the rock since granite is well-jointed.  Spheroidal weathering starts to take place around the concentric shells of the corestones.  The corestones will be exposed to the ground surface and forms boulders or piles up as tors when there is removal of weathered materials by mass wasting.

This is a boulder in Bremaer Hill.	Some boulders are exposed and transported downslope by mass movements.  These boulders are large in size.

 We can also see the evidence of spheroidal weathering along the footpath.  Part of the corestone is exposed by mass movement.

Gullies are formed by rain erosion.  Gully is a water-made cutting, usually steep-sided with a flattened floor.  Gullying usually occurs in unconsolidated rock and rarely cuts through bedrock.  Gullies usually form quickly as a result of destruction of the plant cover. Gully erosion is the removal of topsoil and the creation of many steep-sided cuttings in a hillside. It can be stopped by restoring a vegetation cover, by contour ploughing, and by making terraces and small dams across the hillside.

Rocks are seriously weathered and form soil.  They're redish and yellowish in colour as there is presence of iron oxide.

Weathering can also take place when plant roots grow along joints of rocks.  This kind of physical force can widen the joints.

Soil in Bremaer Hill is coarse in texture.  The three important minerals in granite are quartz, feldspar and mica.  Feldspar and mica are less resistant to chemical weathering and only quartz can remain after weathering.