Valleys were not the work of giant floods but the slow grinding force of wind and water. Uniform Processes of Change. Lyell's version of geology came to be known as uniformitarianism, because of his fierce insistence that the processes that alter the Earth are uniform through time. Like Hutton, Lyell viewed the history of Earth as being vast and directionless.
The standard long jump runway should be at least 40 meters, or 131  feet in length. The take off board should be at least 1 meter, or 3  feet, and the sand landing area shou â¦ ld be at least 2.75 meters, or  9 feet.
1 meter = 3.2808399 feet 20m = 65.61ft 40m = 131.23ft 60m = 196.85ft. Standard dressage arena dimension are 20m x 60m (66' x 198') and small dressage arena dimensions are 20m x 40m (66' x 132'). If you. are building a riding ring and have the space, stake out the larger arena size.