Thomas Chrowder Chamberlin
Thomas Chrowder Chamberlin ( ; September 25 , 1843 – November 15 , 1928 ) was an American geologist and educator . 
<triplet> Thomas Chrowder Chamberlin <subj> September 25, 1843 <obj> date of birth <subj> November 15, 1928 <obj> date of death