Do the Hawaiian islands appear to all be the same age or are they older at one end of the chain?

Ages of rocks from different Islands in the Hawaiian island chain show that the islands are progressively older to the northwest: Oahu, 3.4 to 2.2 Myr (millions of years); Molokai, 1.8 to 1.3 Myr; Maui, 1.3 to 0.8 Myr; and the Big Island (Hawaii), less than 0.7 and still growing.