Correct!
The top layers must be more recent than the bottom layers. The bottom layers had to be there first to hold up the top layers.
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The top layers must be more recent than the bottom layers. The bottom layers had to be there first to hold up the top layers.
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Did these rock layers come from a volcano? Or did they form at the bottom of a lake?
If it was a volcano, was the eruption nearby or far away? If a lake, did the sediment fall from cliffs at the edge of the lake, or was it carried many kilometers by a stream?
Can you think of ways you could find out?
Volcano photo adapted from http://www.heptune.com/pagan1.jpg, used with permission.
Mountain photo adapted from http://www.ucalgary.ca/unicomm/Research/rawson%20lake.jpg, used with permission.
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