Authigenic Sediments Flashcards
1
Q
how are authigenic sediments classified?
A
composition
2
Q
what are types of authigenic sediments?
A
nodules, hydrothermal vents, salty seas (evaporites), and methane hydrates
3
Q
nodules
A
manganese and phosphorus nodules; known as pavement in big groups of nodules covering the seabed
4
Q
hydrothermal vents
A
sulfide chimneys (Juan de Fuca ridge) and calcium chimneys (Lost City, Mid-Atlantic Ridge)
5
Q
evaporites
A
halite and calcite; evaporation leads to precipitation, restricted basins
