5 Questions
What is the state of having many layers called?
Stratification
In sedimentary rocks, what does a change in color or shade in bedding indicate?
Differences in grain size and/or composition
What is a small-scale sequence of fine layers in sedimentary rocks called?
Lamination
Which type of rock commonly forms as a function of the energy of the environment of deposition?
Sedimentary rock
'Each bed represents a ‘page’ in the Earth's history.' What does this statement signify about the succession of layers in a sedimentary sequence?
'Bottom layer being the oldest and the topmost representing the youngest.'
Study Notes
Layering in Sedimentary Rocks
- A state of having many layers is called stratification.
- A change in color or shade in bedding indicates a change in the depositional environment.
Features of Sedimentary Layers
- A small-scale sequence of fine layers in sedimentary rocks is called lamination.
- Conglomerates commonly form as a function of the energy of the environment of deposition.
Significance of Layer Succession
- The succession of layers in a sedimentary sequence represents a chronological record of the Earth's history.
- Each layer serves as a 'page' in the Earth's history, with the sequence of layers providing a timeline of past events.
Test your knowledge on sedimentary layering, stratified rocks formation, and relative dating in geological history. Learn to differentiate between relative dating and absolute dating, and understand the principle of relative dating by reconstructing the sequence of events in a given formation.
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