Help! MEDAL AND FAN!!!! 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?

A.
Scientists could examine the layers of rock above and below the Bright Angel Shale to look for evidence of marine sediments.

B.
Scientists could examine the rocks above and below to look for geological evidence of wave action, which would indicate that the environment was near an ocean.

C.
Scientists could examine the Bright Angel Shale for radioisotopes of marine sediments.

Question

Help! MEDAL AND FAN!!!! 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?
   
A.
Scientists could examine the layers of rock above and below the Bright Angel Shale to look for evidence of marine sediments.
 
 B.
Scientists could examine the rocks above and below to look for geological evidence of wave action, which would indicate that the environment was near an ocean.
 
C.
Scientists could examine the Bright Angel Shale for radioisotopes of marine sediments.

anonymous · Answer

D. 
     Scientists could examine an area of rock that formed recently with similar traits to the Bright Angel Shale. If the recent rock forms only near oceans, geologists know that the Bright Angel Shale formed near an ocean.

anonymous · Answer

i think it is c I hope I helped