plagioclase feldspar is the rock unit on the surface of the moon that is the youngest.
plagioclase feldspar is the rock unit on the surface of the moon that is the youngest.
which rock unit on the surface of the moon is the youngest?
plagioclase feldspar
Na
Na
according to the north american stratigraphic code, rock units were given names that included the geographic name of a location where the rock unit was first described. if the rock unit consisted of a dominant rock type, the rock type was included in the name. in this case, when coal was first discovered and described in colchester, illinois, the rock unit was named "colchester coal". when this particular coal unit was encountered in a different location, the coal was correctly identified as colchester coal.
colchester, illinois