Geologists have been able to determine that the Bright Angel Shale layer formed near the shore of an ocean. What evidence could geologists use today to find out about this ancient rock layer?Scientists could examine the Bright Angel Shale for radioisotopes to indicate the type of environment present.
A.
Limestone above the Shale is made of marine organisms, while sandstone below indicates a beach environment. So the Bright Angel Shale must have formed near the ocean.
B.
Scientists could examine an area of rock that formed recently near the oceans with similar traits to the Bright Angel S

Question

Geologists have been able to determine that the Bright Angel Shale layer formed near the shore of an ocean. What evidence could geologists use today to find out about this ancient rock layer?Scientists could examine the Bright Angel Shale for radioisotopes to indicate the type of environment present.
 A.
Limestone above the Shale is made of marine organisms, while sandstone below indicates a beach environment. So the Bright Angel Shale must have formed near the ocean.
 B.
Scientists could examine an area of rock that formed recently near the oceans with similar traits to the Bright Angel S

anonymous · Answer

Scientists could examine an area of rock that formed recently near the oceans with similar traits to the Bright Angel Shale. This would indicate that the Bright Angel Shale formed near an ocean.
 
 C.
Scientists could examine the layers of rock above and below the Bright Angel Shale to look for evidence of ocean minerals.
 
 D.