always part of a larger watershed. water flows from higher elevations to lower elevations due to gravity. in some places puddles, lakes, or ponds form because the ground is lower than surrounding areas. sometimes puddles can form because the ground is saturated and can't absorb any more water. if soil...
around the pipeline is subject to erosion. the pipeline was installed on a depth of approximately m but due to the earthquakes the seabed was eroding to water depths below m and the deeper sections were approaching the pipeline with every new earthquake. rock material was produced by our local partner...
deposits. image by the united states geological survey. enlarge map . debris flow dynamics (part ): a united states geological survey archival film that explains debris flows. venezuela debris flow: material deposited by a prehistoric debris flow in northern venezuela and exposed for view by stream erosion...