Oceanography semester 2
Oolites are an example of which of the following sediment types?
hydrogenous sediment
Which of the following contains CaCO3
Foraminiferans
Manganese nodules are an example of
hydrogenous sediments
Manganese nodules are an example of:
hydrogenous sediments
True or false: The wentworth scale is used to arrange the amount of sorting in a sediment deposit
False
True or false: sediments derived from weathered rock and volcanic activities are called biogenous sediments
False
Abyssal clay is an example of which of the following sediment types?
Lithogenous Sediment
The four main classifications of marine sediments include:
Lithogenous, biogenous, cosmogenous, and hydrogenous
Calcium carbonate is most likely to dissolve in water with which characteristics?
Lots of carbon dioxide and colder temperatures
Which of the following contains Sio2
Radiolarians
Diatomaceous ooze is a type of __________.
Biogenous ooze
Coccolithophores are an example of which sediment type?
Biogenous sediment
Siliceous ooze is an example of which sediment type
Biogenous sediment
Stromatolites are an example of what sediment type
Biogenous sediment
Calcium Compensation Depth (CCD)
Depth at which all calcium carbonate is in solution
As early as the 1700's, scientists and explorers noticed a remarkable coincidence of the shape of Atlantic coasts of Africa and which continent?
South America
Tektites are glassy rock fragments created during impact events
True
True or False: calcareous shells will not accumulate on the clean floor when the water depth exceeds about 4,500 meters
True
True or False: calcium carbonate, phosphates, and manganese may precipitate out of solution to form deposits on the ocean floor
True
True or False: radiolarion oozes typically form near the equator
True
True or false: coastal sand dunes are usually well sorted due to winds
True
Ice rafting
associated with glacial deposits
Turbidite
associated with submarine canyons and deep-sea alluvial fans
Sediments produced by plants and animals in the sea are called:
biogenous
Halite is a type of __________. (a) biogenous sediment (b) cosmogenous sediment (c) hydrogenous sediment (d) lithogenous or terrigenous sediment
c. hydrogenous sediment
Metal sulfides are a type of __________. (a) biogenous sediment (b) cosmogenous sediment (c) hydrogenous sediment (d) lithogenous or terrigenous sediment
c. hydrogenous sediment
Tektites are an example of which of the following sediment types?
cosmogenous sediment
Lysocline
depth at which calcium carbonate begins to dissolve
High-energy environments are most likely to deposit which one of the following?
large particles such as gravel
Sediments derived from pre-existing rocks on land are called:
lithogenous
Sediment that begins as rocks on continents or islands is called:
lithogenous (terrigenous) sediment
Wentworth Scale
particle size classification
Texture refers to
the size and shape of sediment particles.
