Question 18 1 points save answer how old are the rocks found at henrietta (a town just south of rochester)? a- 420-440 ma b. 360-420 ma oc. 200-250 ma d 0-2.5 ma

correct option is (a) 420-440 Ma

Explanation:

as we know that Henrietta town in the Monroe County , United States

and in Henrietta large number of rocks are found and major are Sedimentary and Igneous rocks

and porphyritic in nature ( Basalts and diorite ) also found in  the  Henrietta and They are subject to absolute dating method

as the results are found to be that the rocks were about 420 - 440 million years old

so correct option is (a) 420-440 Ma

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