3341
As the sea deepened and expanded sand and gravel eroded from mountains in the west was deposited in the Dakota Formation ; later , when the sea was deeper mud and sand were deposited in the Mancos Shale .
 location: Dakota Formation; location: Mancos Shale
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: Dakota Formation; location: Mancos Shale