Apparently, he thinks he looks intelligent by posing geological questions in the Religion and Spirituality section.
I am neither a christian nor an atheist so I have not bothered to answer any of his questions but he does come across as very shrill and insecure. So far, the atheists on this forum have been making mincemeat of his ridiculous assertions and he is probably oblivious to the fact that he is doing a disservice to his beliefs.
Oh, and by the way, you have not harassed him nor sent him any spam so the only reason that he blocked you is because he is afraid of you. He is a petty, insecure person who fears people of intelligence,wit, and honesty.