I'm wondering if there is a terminology for the following logical fallacy:
Joe: Statement "X" must be true because it is clearly laid out as such in mutually reliable source "Y".
Sam: Joe, the statement "X" seems outlandish and therefore it ought to be rejected in its own right.
Joe: It is not me postulating or forcing statement "X", rather it is mutually reliable source "Y" that indicates it is true. Therefore in as much as you respect source "Y", you shouldn't question me. Rather, you should reconsider if you're own presupposition about statement "X" is compatible with mutually agreed source "Y".
I know it's a little bit abstract... if there's any way I can modify it please help...