In a post on the online platform Medium, Jessica Krug - a history professor focusing on Africa - said she had been pretending "for the better part" of her adult life.
Ms Krug, who is light-skinned, said she first claimed "North African Blackness, then US-rooted Blackness, then Caribbean-rooted Bronx Blackness." Ms Krug told Medium her actions were the "very epitome of violence, of thievery and appropriation, of the myriad ways in which non-Black people continue to use and abuse Black identities and cultures."
In a brief statement, the university said: "We are aware of the post by Jessica Krug and are looking into the situation. We cannot comment further on personnel matters."