12 Questions
What is the primary characteristic of cross-bedding?
The layers within the bed are inclined at the time of deposition.
Which of the following is a characteristic of asymmetric ripple marks?
They are typically characterized by a long face and a short face, with the short face pointing down-current.
What information can fossil burrows provide about the depositional environment?
Biologically-created sedimentary structures can provide information about the depositional environment.
What is the primary characteristic of graded bedding?
The grain size decreases from the bottom to the top of the bed.
What is the primary function of mud cracks in sedimentary environments?
They form as a result of drying and contraction of mud sediment, and can indicate alternating wet and dry conditions.
What type of sedimentary structure is characterized by depressions or erosional features formed as a current flows across a bed of sand?
Scour marks
Which of the following is NOT a sedimentary structure?
Faults
Which of the following sedimentary structures indicates the direction of flow?
Cross-bedding
In which depositional environment would you expect to find massive bedding?
A low-energy lacustrine environment
Which of the following statements about laminations is correct?
They are common in mudrocks
What information can sedimentary structures provide about paleoenvironments?
All of the above
What is the primary purpose of studying sedimentary structures?
All of the above
Explore the features and formations of sedimentary structures and stratification in depositional environments. Learn how structures seen in present-day environments or produced in experiments offer insights into the origins of sedimentary rocks.
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