size of the particles that can be mouth (end) of a river, sedimentary deposits are commonly transported and deposited decreases composed of finer sediments such as sand, silt and clay. In the as the water velocity decreases. Along assessment probe at the end of this lesson, students should be the length of a river from its high able to predict that coarser river sediments will be found in the gradient source area to a region with a river where it flows in the mountains and that finer sediments such low gradient near its mouth, as sand and clay are deposited by the river where it flows through sediments are sorted by size. Coarser and into the ocean. “flatlands” sediments such as boulders and gravel Graded Bedding are common stream deposits in Source: Newfoundland and Labrador Geological Survey mountainous regions. Near the
size of the particles that can be transported and deposited decreases as the water velocity decreases. Along the length of a river from its high gradient source area to a region with a low gradient near its mouth, sediments are sorted by size. Coarser sediments such as boulders and gravel are common stream deposits in mountainous regions. Near the mouth (end) of a river, sedimentary deposits are commonly composed of finer sediments such as sand, silt and clay. In the assessment probe at the end of this lesson, students should be able to predict that coarser river sediments will be found in the river where it flows in the mountains and that finer sediments such as sand and clay are deposited by the river where it flows through “flatlands” and into the ocean. Graded Bedding Source: Newfoundland and Labrador Geological Survey