Imagine you are a geologist in the field examining a fluvial deposit. Explain how you could determine if the deposit was from a braided stream, meandering stream, or delta
If the deposit was from a braided stream, you would expect the deposit to contain mostly layers of sand and gravel. Breccias and conglomerates would be the predominant rock types.
If the deposit was from a meandering stream, you would expect to see a mix of sand and mud. Beds would be less thick than deltas.
If the deposit was a delta, you would expect to see progressively finer sediments in a seaward direction, and coarser sediments towards the top of the sequence. It might also be possible to identify bottomset, foreset, and topset beds. Sediments would contain some sand, and lots of silt, clays, and muds.
You might also like to view...
Scientific thinking
A. searches for cause-and-effect relationships. B. is rational thinking. C. both of these D. none of the above
The annual heating energy consumption of a house located in the northeastern part of the United States is 140 million Btu. How many gallons of fuel oil does it take to keep the house warm during the cold months?
What will be an ideal response?
First motion studies of mid-ocean ridges show that the faults there are ________, and parallel to the rift valley.
A. deep focus earthquakes B. compression C. strike-slip motion D. normal E. subduction
How much time does it take for a flu pandemic to infect people all around the world?
What will be an ideal response?