English example sentences with "sediment"

By means of a super high-pressure water spray practically all the sediment is removed.
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The scientists assembled dozens of temperature records from multiple studies, including data from sediment cores drilled in lake bottoms and sea floors, and from ice cores.
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Currents, waves, and wind normally transport sediment throughout the littoral system. Armoring of the coast can interfere with littoral transport, which in a natural state may reach a dynamic equilibrium.
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The Mississippi River carries millions of tons of nutrient-rich sediment into the Gulf each year.
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Sediment cores from the bottom of Yellowstone’s lakes contain fossils of pollen deposited during the Late Pleistocene. These pollen records show which plants were present at that time and allow researchers to infer climate conditions.
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Sedimentary rock contains fossils because it was built up layer upon layer, often trapping and preserving animals, plants, footprints, and more within the layers of sediment.
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If all the conditions are right, fossils are formed as the layers of sediment turn into rock.
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Stromatolites are the limestone structures formed by photosynthesizing bacteria called cyanobacteria. They created layers of alternating slimy bacteria and sediment in very shallow water, dominating shallow seas until predators, such as trilobites, came into the picture.
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Agriculture, forestry and urbanization are increasing the amount of sediment, chemicals and plastics flowing into the oceans, and contaminating the coastline.
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Layers of sediment lay at the bottom of the riverbed.
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NASA’s Perseverance rover’s two-year science investigation of Mars’ Jezero Crater is studying the rock and sediment of Jezero’s ancient lakebed and river delta and aiding in the search for signs of ancient microbial life.
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The world's 50,000 large dams are a known source of methane, which bubbles up from the organic matter in the sediment accumulating behind the barrier.
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As the earth’s climate changes, one tool for understanding its environmental impacts is the study of past climate changes, revealed by layers of sediment scientists take from the sea floor.
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In a study published Tuesday, Japanese and American scientists described what they found in sediment samples taken from a flat, wide area 3.7 kilometers to 5.7 kilometers below the ocean’s surface, known as an abyssal plain.
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The weight of structures on the delta, decreased upstream sediment flows and natural compaction are also contributing factors to the loss of delta land, he said.
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She said that the scientists involved with the project are continuing their research by analyzing the non-organic components, the chemical interactions between Lake Vida brine and sediment, and by using various methods of genome sequencing, and are learning more about their rare microbial find.

Investigators base their conclusion on an analysis of a 60,000-year-old sediment core extracted from the bottom Lake Tanganyika in the East African Rift Valley, which borders Burundi, Democratic Republic of the Congo, Tanzania and Zambia. The lake is the world's second deepest fresh water lake.

Continental shelves are often covered by young land-derived sediment.