The Sediment Layer On The Ocean Floor Quizlet

The sediment cover in the pacific basin ranges from 300 to 600 metres.

The sediment layer on the ocean floor quizlet.

Learn vocabulary terms and more with flashcards games and other study tools. Start studying geology chapter 10 ocean floor. Foraminifera f ə ˌ r æ m ə ˈ n ɪ f ə r ə. They can carry coarse grain sized sediments to and across the deep ocean floor adjacent to the continental shelves.

Some of these organic sediments are called calcareous or siliceous oozes because they are so thick and gooey. The only exception are the crests of the spreading centres where new ocean floor has not existed long enough to accumulate a sediment cover. Latin for hole bearers. Sediment thickness in the oceans averages about 450 metres 1 500 feet.

The carbonate layer may be prevented from chemically interacting with the sea water by overlying sediments such as a layer of siliceous ooze or abyssal clay deposited on top of the carbonate layer. Abyssal clay on deep sea floor. And commonly an external shell called a test of diverse forms and materials tests of chitin found in some simple genera. Pelagic sediment is composed of clay particles and microskeletons of marine organisms that settle slowly to the ocean floor.

Because large particles settle faster turbidity currents leave layers of sediment called turbidite layers. Neritic sediment is mostly. Sediments in the deep sea fine grained collect slowly on sea floor. Turbidity currents are swift moving 70 km hr 1 or more slumps of sediment similar to avalanches.

Mircofossils biogenous sediments from the period after the dinosaurs. The clay component or sometimes volcanic ash is generally carried from land by wind and falls on the. Informally called forams are single celled organisms members of a phylum or class of amoeboid protists characterized by streaming granular ectoplasm for catching food and other uses. The post extinction layer of sediments contains.