Leaf impression in basalt The local geological context makes the basalt flow approximately &#145;30 million years old&#146;, 1 , 3 in keeping with other basalt flows in the region all regarded as of Tertiary age (in the conventional terminology).
(30 million years old&#146;, 1 , 3 in keeping with other basalt; flows; in the region) Context(30 million years old & # 146 ; , 1 , 3 in keeping with other basalt flows,List([97, 165))):(The local geological context; makes; the basalt flow approximately &#145)
30 million years old & # 146 ; , 1 , 3 in keeping with other basalt flows,List([97, 165))
30 million years old&#146;, 1 , 3 in keeping with other basalt The local geological context
flows makes
in the region
the basalt flow approximately &#145