Sea Floor Sediments And Characteristics Quizlet
Terrigenous pelagic and hydrogenous.
Sea floor sediments and characteristics quizlet. Terrigenous sediment is derived from land and usually deposited on the continental shelf continental rise and abyssal plain. While most biology is found nearshore most of the nearshore biogenous sediments are watered down with the vast amount of neritic sediments and are hard to find in abundance nearshore. Learn vocabulary terms and more with flashcards games and other study tools. It is further contoured by strong currents along the continental rise.
Foraminifera f ə ˌ r æ m ə ˈ n ɪ f ə r ə. The sea floor and its sediments. Learn seafloor sediments with free interactive flashcards. Melting icebergs carry sediments and when melted the sediments are deposited down onto the sea floor 3rd way sediments reach ocean basins wind carries volcanic ash dust and sand from desert into ocean and it sinks down.
Sediments that accumulate on the seafloor provide information about ocean conditions at the time that the sediment was deposited changes in the composition of the seafloor sediment reflect changes in the depositional environment. The oldest sediments so far recovered by a variety of methods including coring dredging and deep sea drilling date only to the jurassic period not exceeding about 200 million years in age. There are three kinds of sea floor sediment. However very little lithogenous sediments travel out to the deep ocean leaving the accumulation of biogenous sediments more available on the pelagic sea floor.
And commonly an external shell called a test of diverse forms and materials tests of chitin found in some simple genera. Measurements of the thickness of marine sediments and absolute age determinations of such bottom material have provided additional evidence for seafloor spreading. Learn vocabulary terms and more with flashcards games and other study tools. Start studying oceanography chapter 4.
Start studying chapter 3. Choose from 47 different sets of seafloor sediments flashcards on quizlet. Learn vocabulary terms and more with flashcards games and other study tools. The sea floor and its sediments.