3342
Drilling at the base of the range during gold exploration in the vicinity showed small amounts of oil and evidence of the existence of those formations as well as the underlying Morrison Formation .
 location: Morrison Formation
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 location: Morrison Formation