The Jurassic is a(n)
The smallest units of geologic time are the
The smallest units of geologic time are the
The Paleozoic is a(n)
The Paleozoic is a(n)
The largest units of geologic time are the
The largest units of geologic time are the
Wood from an ancient stump has a ratio of carbon-14 to carbo…
Wood from an ancient stump has a ratio of carbon-14 to carbon-12 that is one-eighth that of new wood. About how old is the stump? (Carbon-14’s half-life is 5730 years.)
Stromatolites are structures created by
Stromatolites are structures created by
Another name applied to the grain size in a rock is
Another name applied to the grain size in a rock is
Four kinds of metamorphism are
Four kinds of metamorphism are
Laccoliths and sills are examples of ______________ plutons.
Laccoliths and sills are examples of ______________ plutons.
Molten rock material on Earth’s surface is called
Molten rock material on Earth’s surface is called