The age of oceanic crust a. is the same throughout the world's oceans. b. is greatest at the mid-ocean ridge and least farthest from the ridge. c. indicates that the oldest oceanic crust is approximately 600 million years old. d. has been determined by radiometric dating.

15 points need quick 1. looking at your graph and the geologic time scale during what period did this rock form? what is the age span of the rock, in millions of years? 2. this rock sample is limestone and shale. with what you know about rock formation, what type of environment did these organisms live in? 3. if some of these fossil samples were found in a rock also containing leaf fossils, could you use radiocarbon dating to determine the age of this rock? explain.