In earth science, type of erosion in which rock fragments scrape and grind away a surface. It is also known as corrasion. The rock fragments may be carried by rivers, wind, ice, or the sea. Striations, or grooves, on rock surfaces are common abrasions, caused by the scratching of rock by debris carried in glacier ice.
Blue represents the sky and the sea. Yellow symbolizes the sun which gives light and life. Red reflects the people and their determination to work in the future in unity and love. White stands for justice and harmony. Green recalls the land and nature. Effective date: 8 January 1996.