If a layer of sandstone lies on top of a layer of limestone in which a 300-million-year-old fossil is found, and there are no unconformities, the layer of sandstone must be ____.
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The age of one rock layer compared to the age of another rock layer is its __________.
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Which statement is true of the undisturbed rock layers shown?
If the same types of fossils are found in two separate rock layers, it's likely that the two rock layers ____.
Determining the order of events and the relative age of rocks by examining the position of rocks in a sequence is called ____.
Extrusions are formed by cooling magma beneath Earth’s surface.
In a series of undisturbed rock layers where shale lies between sandstone below and limestone above, the ____.
Rock layers are correlated if they both contain the same ____.
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