Where does mud river begin1/31/2024 Particles that have been carried a long way are usually nice and round and smooth, as all their rough edges get worn down as they are transported by the river. Larger particles settle first, followed by smaller and smaller particles as the flow slows down even further. These particles will be deposited-settle down out of the water-when the flow is no longer strong enough to carry them. It’s also capable of carrying larger particles along with a range of smaller, fine-grained particles. ![]() The stronger the flow, the more particles it can transport. Imagine a strongly flowing river carrying lots of sediment along with it. The large criss-crossing layers are typical of sand dune deposits. The sandstone that forms Antelope Canyon, in Arizona, USA is an aeolian deposit, meaning that the sand sediments were transported by wind and deposited to make huge sand dunes that later cemented into rock. By studying the features of a sedimentary rock, you can tell what sort of process originally created it. Each of these dynamic processes is different, and so the types of particles they transport and deposit can be very distinctive. Various processes then transport and deposit these sediments-including rivers, glaciers, landslides (which can also occur underwater) and wind. In this context, even large boulders can be a type of sediment. These can range in size from tiny grains of clay and sand to larger pebble-sized chunks of rocks. The first step in the process is the creation of sediments, where existing rocks are eroded and broken down by various processes into smaller particles. Many sediments start their lives on land, but their ultimate resting place is the bottom of the ocean. The sediments at the bottom of the ocean are clastic sediments, which are particles that have been eroded and broken down from other rocks and combined with a lot of organic material-skeletons, shells and other remains from creatures that either lived in the water column of the ocean or on the seafloor. To interpret the history that can be extracted from layers of seafloor mud, you need to know the basic principles of sedimentology-the study of how modern sediments are created, transported, deposited and eventually turn into rock.
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