Which principle states that, in undisturbed rock layers, the oldest rocks are on the bottom and the youngest rocks are on top?
A limestone bed containing fossils that are 550 million years old is ____ a bed of sandstone containing fossils that are 400 million years old.
Which statement is true of the undisturbed rock layers shown?
Determining the order of events and the relative age of rocks by examining the position of rocks in a sequence is called ____.
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 ____.
Extrusions are formed by cooling magma beneath Earth’s surface.
The age of one rock layer compared to the age of another rock layer is its __________.
Please select the word from the list that best fits the definition
Gaps in rock layers are called ____.
If the same sequence of rock layers is observed over a large area, ____.
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