Which of the following Earth materials can be used to make interpretations about the nature and composition of the interior of the Earth?
A) Meteorites
B) Diamond-bearing kimberlite pipes
C) Slivers of crustal and mantle rocks exposed at the surface
D) Meteorites, kimberlite pipes, and slivers of crustal and mantle rocks
E) Groundwater and vapors in geothermal systems
Question 2
Because the early Earth was a large sphere of magma, the earliest rocks that formed here were recycled into the mantle long ago. What is the age of the oldest radiometrically dated rocks discovered on the planet?
(Or, what is the age of the oldest remaining rocks on Earth?)
A) 6,000 years old
B) 4.6 million years old
C) 4 billion years old
D) 4.6 billion years old
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