17 Questions
Which type of rock is the most abundant among classified rocks by particle size?
Shale
What is the most abundant chemical rock mentioned in the text?
Limestone
Which type of metamorphism occurs near a body of magma?
Contact metamorphism
What agent of metamorphism provides the energy needed to drive chemical reactions?
Heat
Which rock type is not mentioned in the text as a product of chemical sedimentary rocks?
Coal
Which mineral group is defined as containing silicon and oxygen?
Silicates
Which mineral group consists of minerals containing carbon, oxygen, and other metallic elements?
Carbonates
Minerals that contain oxygen and usually metals belong to which group?
Oxides
Which mineral group contains a halogen ion and other elements?
Halides
What is the primary composition of siliceous ooze, a biogenous sediment?
Silica-based shells
Minerals with the element sulfur are classified under which group?
Sulfates and Sulfides
Which mineral is a major component of hydrogenous sediment formed through direct crystallization in ocean water?
Halite
Which mineral group includes minerals existing in relatively pure form?
Native Elements
What process leads to the formation of gas hydrates in oceanic sediments?
Bacterial breakdown of organic matter
Which type of sediment is produced by dissolving calcium carbonate shells?
Biogenous sediment
What is the most economically important salt mentioned in the text?
Sodium chloride
What is the second most economically valuable resource after petroleum in terms of offshore industries?
Sand and gravel
Study Notes
Classification of Rocks
- Shale is the most abundant type of rock classified by particle size
Metamorphism
- Contact metamorphism occurs near a body of magma
- Heat is the agent of metamorphism that provides the energy needed to drive chemical reactions
Chemical Sedimentary Rocks
- Evaporite is the most abundant chemical rock mentioned in the text
- Limestone is not a product of chemical sedimentary rocks
Mineral Groups
- Silicates are minerals that contain silicon and oxygen
- Carbonates are minerals that contain carbon, oxygen, and other metallic elements
- Oxides are minerals that contain oxygen and usually metals
- Halides are minerals that contain a halogen ion and other elements
- Sulfides are minerals that contain the element sulfur
Sediments
- Siliceous ooze, a biogenous sediment, is primarily composed of the skeletons of tiny marine plankton
- Gypsum is a major component of hydrogenous sediment formed through direct crystallization in ocean water
Mineral Resources
- Native elements are a mineral group that includes minerals existing in relatively pure form
- Gas hydrates are formed in oceanic sediments through the process of crystallization under high pressure and low temperature
- Solution sediment is produced by dissolving calcium carbonate shells
- Halite (rock salt) is the most economically important salt mentioned in the text
- Natural gas is the second most economically valuable resource after petroleum in terms of offshore industries
Test your knowledge on different types of marine sediments including terrigenous, biogenous, and hydrogenous sediments. Learn about the characteristics and formation processes of these sediments.
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