Flashcards in Seafloor Sediments Deck (19):
What are the four marine sediments?
Lithogenous, Hydrogenous, Biogenous, and Cosmogenous
Lithogenous sediments are?
Sediments derived from preexisting rock materials.
Lithogenous sediments are also called ___________ because most Lithogenous sediments come from landmasses
Lithogenous sediments begins as?
rocks on continents or islands
Eroded material is carried to oceans by
Streams, wind, glaciers, and gravity
80% of lithogenous sediments are provided by what continent
The greatest amount of lithogenous sediment is found?
along beaches and at the continental margin
Rock fragments, Quarts sand, Quarts silt, Clay, and Volcanic ash are examples of which type of sediment
Calcareous ooze, Shell/Coral fragments, and Siliceous ooze are examples of which type of sediment
Manganese nodules, Phosphorite, Oolites, Metal sulfides, and Evaporites are examples of which type of sediment?
Iron nickel spherules, Tektites, Iron nickel meterorites, and Silicate chondrites are examples of which type of sediment
Calcareous ooze comes from
Coccolithophores and Foraminifers
Siliceous ooze comes from
Diatoms and Radiolarians
Hydrogeneous sediments are
Precipitation of dissolved materials from sea water due to chemical reactions
Broken down bits of of organisms like teeth and bones
The two most common chemical compounds in biogenous sediments are
Calcium Carbonate and and Silica
Marine Snow is:
Made up of organic matter, dead sea creatures, tiny shells, dust and minerals.
Sediments can be classified by size. The types of sediment, from smallest to largest are?
Clay, Silt, Sand, Gravel, Boulders