The oldest oceanic crust is approximately ____________ years old.
A) 1 billion
B) 240 million
C) 120 million
D) 90 million

Question

The oldest oceanic crust is approximately ____________ years old. 
A) 1 billion 
B) 240 million 
C) 120 million 
D) 90 million

Quizplus · Accepted Answer

The oldest oceanic crust is approximately 240 million years old, which is much younger than the oldest continental crust that dates back more than 4 billion years. This is due to the continuous process of seafloor spreading and subduction, which recycles oceanic crust and forms new crust.

The Oldest Oceanic Crust Is Approximately ____________ Years Old